Phylum in the domain Eukarya, comprised of animals either with fully developed backbones (VERTEBRATES), or those with notochords only during some developmental stage (CHORDATA, NONVERTEBRATE).
A portion of the animal phylum Chordata comprised of the subphyla CEPHALOCHORDATA; UROCHORDATA, and HYPEROTRETI, but not including the Vertebrata (VERTEBRATES). It includes nonvertebrate animals having a NOTOCHORD during some developmental stage.
A subphylum of chordates intermediate between the invertebrates and the true vertebrates. It includes the Ascidians.
The relationships of groups of organisms as reflected by their genetic makeup.
The process of cumulative change at the level of DNA; RNA; and PROTEINS, over successive generations.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
It is a form of protection provided by law. In the United States this protection is granted to authors of original works of authorship, including literary, dramatic, musical, artistic, and certain other intellectual works. This protection is available to both published and unpublished works. (from Circular of the United States Copyright Office, 6/30/2008)
Protective measures against unauthorized access to or interference with computer operating systems, telecommunications, or data structures, especially the modification, deletion, destruction, or release of data in computers. It includes methods of forestalling interference by computer viruses or so-called computer hackers aiming to compromise stored data.
The privacy of information and its protection against unauthorized disclosure.
The state of being free from intrusion or disturbance in one's private life or affairs. (Random House Unabridged Dictionary, 2d ed, 1993)
The bestowing of tangible or intangible benefits, voluntarily and usually without expectation of anything in return. However, gift giving may be motivated by feelings of ALTRUISM or gratitude, by a sense of obligation, or by the hope of receiving something in return.
Method of making images on a sensitized surface by exposure to light or other radiant energy.
A plant species of the family VISCACEAE, order Santalales, subclass Rosidae. This is the traditional mistletoe of literature and Christmas. Members contain viscotoxin (5 kDa basic polypeptides related to thionins), beta-galactoside- and N-acetyl-D-galactosamine-specific lectin II (60 kDa), and polysaccharides. Mistletoe lectin I is a type 2 ribosome-inactivating protein. Commercial extracts include Plenosol, Eurixor, Helixor Isorel, Iscador, and NSC 635089 (ANTINEOPLASTIC AGENTS, PHYTOGENIC).
A plant species in the CHENOPODIUM genus known for edible greens.
A visual image which is recalled in accurate detail. It is a sort of projection of an image on a mental screen.
The addition of descriptive information about the function or structure of a molecular sequence to its MOLECULAR SEQUENCE DATA record.
Databases containing information about PROTEINS such as AMINO ACID SEQUENCE; PROTEIN CONFORMATION; and other properties.
The protein complement of an organism coded for by its genome.
A loose confederation of computer communication networks around the world. The networks that make up the Internet are connected through several backbone networks. The Internet grew out of the US Government ARPAnet project and was designed to facilitate information exchange.
An island in the Greater Antilles in the West Indies, south of Florida. With the adjacent islands it forms the Republic of Cuba. Its capital is Havana. It was discovered by Columbus on his first voyage in 1492 and conquered by Spain in 1511. It has a varied history under Spain, Great Britain, and the United States but has been independent since 1902. The name Cuba is said to be an Indian name of unknown origin but the language that gave the name is extinct, so the etymology is a conjecture. (From Webster's New Geographical Dictionary, 1988, p302 & Room, Brewer's Dictionary of Names, 1992, p132)
Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.
A kingdom in the eastern Himalayas on the northeast border of India, bounded on the north by Tibet, on the east by Assam, on the south by Assam and West Bengal, and on the west by Sikkim and Tibet. From 1720 to 1970 it was under Chinese or Indian domination. In 1971 it became a member of the United Nations. The name comes from the Sanskrit bhota, the name for Tibet, + anta, end, with reference to its location at the southern extremity of Tibet. (From Webster's New Geographical Dictionary, 1988, p144 & Room, Brewer's Dictionary of Names, 1992, p64)
A plant genus of the family TAXODIACEAE known for including some of the tallest trees.
The natural satellite of the planet Earth. It includes the lunar cycles or phases, the lunar month, lunar landscapes, geography, and soil.
A subphylum of chordates intermediate between the invertebrates and the true vertebrates. It includes the LANCELETS. Its members are characterized by a NOTOCHORD which extends into the adult stage head.
Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)
Silicon polymers that contain alternate silicon and oxygen atoms in linear or cyclic molecular structures.
The only species of a cosmopolitan ascidian.
The front part of the hindbrain (RHOMBENCEPHALON) that lies between the MEDULLA and the midbrain (MESENCEPHALON) ventral to the cerebellum. It is composed of two parts, the dorsal and the ventral. The pons serves as a relay station for neural pathways between the CEREBELLUM to the CEREBRUM.
A cylindrical column of tissue that lies within the vertebral canal. It is composed of WHITE MATTER and GRAY MATTER.
The part of brain that lies behind the BRAIN STEM in the posterior base of skull (CRANIAL FOSSA, POSTERIOR). It is also known as the "little brain" with convolutions similar to those of CEREBRAL CORTEX, inner white matter, and deep cerebellar nuclei. Its function is to coordinate voluntary movements, maintain balance, and learn motor skills.
The middle of the three primitive cerebral vesicles of the embryonic brain. Without further subdivision, midbrain develops into a short, constricted portion connecting the PONS and the DIENCEPHALON. Midbrain contains two major parts, the dorsal TECTUM MESENCEPHALI and the ventral TEGMENTUM MESENCEPHALI, housing components of auditory, visual, and other sensorimoter systems.
The ability to detect chemicals through gustatory receptors in the mouth, including those on the TONGUE; the PALATE; the PHARYNX; and the EPIGLOTTIS.
Penetrating and non-penetrating injuries to the spinal cord resulting from traumatic external forces (e.g., WOUNDS, GUNSHOT; WHIPLASH INJURIES; etc.).
The movement of the BLOOD as it is pumped through the CARDIOVASCULAR SYSTEM.
The HEART and the BLOOD VESSELS by which BLOOD is pumped and circulated through the body.
The exchange of OXYGEN and CARBON DIOXIDE between alveolar air and pulmonary capillary blood that occurs across the BLOOD-AIR BARRIER.
The application of scientific knowledge or technology to the field of radiology. The applications center mostly around x-ray or radioisotopes for diagnostic and therapeutic purposes but the technological applications of any radiation or radiologic procedure is within the scope of radiologic technology.
A branch of biology dealing with the structure of organisms.
Processes and properties of the CARDIOVASCULAR SYSTEM as a whole or of any of its parts.
Factors which produce cessation of all vital bodily functions. They can be analyzed from an epidemiologic viewpoint.
The system of glands that release their secretions (hormones) directly into the circulatory system. In addition to the ENDOCRINE GLANDS, included are the CHROMAFFIN SYSTEM and the NEUROSECRETORY SYSTEMS.
Ductless glands that secrete HORMONES directly into the BLOOD CIRCULATION. These hormones influence the METABOLISM and other functions of cells in the body.
Pathological processes of the ENDOCRINE GLANDS, and diseases resulting from abnormal level of available HORMONES.
Exogenous agents, synthetic and naturally occurring, which are capable of disrupting the functions of the ENDOCRINE SYSTEM including the maintenance of HOMEOSTASIS and the regulation of developmental processes. Endocrine disruptors are compounds that can mimic HORMONES, or enhance or block the binding of hormones to their receptors, or otherwise lead to activating or inhibiting the endocrine signaling pathways and hormone metabolism.
Tumors or cancer of the ENDOCRINE GLANDS.
Chemical substances having a specific regulatory effect on the activity of a certain organ or organs. The term was originally applied to substances secreted by various ENDOCRINE GLANDS and transported in the bloodstream to the target organs. It is sometimes extended to include those substances that are not produced by the endocrine glands but that have similar effects.

ROLE OF THE GAMETE MEMBRANES IN FERTILIZATION IN SACCOGLOSSUS KOWALEVSKII (ENTEROPNEUSTA). I. THE ACROSOMAL REGION AND ITS CHANGES IN EARLY STAGES OF FERTILIZATION. (1/153)

Previous electron microscope studies of sperm-egg association in the annelid Hydroides revealed novel aspects with respect to the acrosomal region. To determine whether these aspects were unique, a comparable study was made of a species belonging to a widely separated phylum, Hemichordata. Osmium tetroxide-fixed polyspermic material of the enteropneust, Saccoglossus, was used. The acrosomal region includes the membrane-bounded acrosome, with its large acrosomal granule and shallow adnuclear invagination, and the periacrosomal material which surrounds the acrosome except at the apex; here, the acrosomal membrane lies very close to the enclosing sperm plasma membrane. After reaching the egg envelope, the spermatozoon is activated and undergoes a series of changes: the apex dehisces and around the resulting orifice the acrosomal and sperm plasma membranes form a continuous mosaic membrane. The acrosomal granule disappears. Within 7 seconds the invagination becomes the acrosomal tubule, spans the egg envelopes, and meets the egg plasma membrane. The rest of the acrosomal vesicle everts. The periacrosomal mass changes profoundly: part becomes a fibrous core (possibly equivalent to a perforatorium); part remains as a peripheral ring. The basic pattern of structure and sperm-egg association in Saccoglossus is the same as in Hydroides. Previous evidence from four other phyla as interpreted here also indicates conformity to this pattern. The major role of the acrosome is apparently to deliver the sperm plasma membrane to the egg plasma membrane.  (+info)

ROLE OF THE GAMETE MEMBRANES IN FERTILIZATION IN SACCOGLOSSUS KOWALEVSKII (ENTEROPNEUSTA). II. ZYGOTE FORMATION BY GAMETE MEMBRANE FUSION. (2/153)

An earlier paper showed that in Saccoglossus the acrosomal tubule makes contact with the egg plasma membrane. The present paper includes evidence that the sperm and egg plasma membranes fuse to establish the single continuous zygote membrane which, consequently, is a mosaic. Contrary to the general hypothesis of Tyler, pinocytosis or phagocytosis plays no role in zygote formation. Contact between the gametes is actually between two newly exposed surfaces: in the spermatozoon, the surface was formerly the interior of the acrosomal vesicle; in the egg, it was membrane previously covered by the egg envelopes. The concept that all the events of fertilization are mediated by a fertilizin-antifertilizin reaction seems an oversimplification of events actually observed: rather, the evidence indicates that a series of specific biochemical interactions probably would be involved. Gamete membrane fusion permits sperm periacrosomal material to meet the egg cytoplasm; if an activating substance exists in the spermatozoon it probably is periacrosomal rather than acrosomal in origin. The contents of the acrosome are expended in the process of delivering the sperm plasma membrane to the egg plasma membrane. After these membranes coalesce, the sperm nucleus and other internal sperm structures move into the egg cytoplasm.  (+info)

AN UNUSUAL CONFIGURATION OF THE GOLGI COMPLEX IN PIGMENT-PRODUCING "TEST" CELLS OF THE OVARY OF THE TUNICATE, STYELA. (3/153)

The test cell in the ovary of the tunicate Styela contains a large and robust Golgi complex which demonstrates a regional structural differentiation. In one of the regions, branching of the lamellae occurs resulting in a honeycomb or lattice-type arrangement. Small, dense granules or homogeneous material of moderate density may be present within certain of the Golgi cisternae. The close association, or continuity in some cases, between elements of the Golgi complex and immature forms of pigment suggests that the Golgi complex in these cells is involved in pigment formation. These relationships are shown and discussed in terms of possible functional significance.  (+info)

A CYTOCHEMICAL STUDY OF CYTOPLASMIC BASIC PROTEINS IN THE ASCIDIAN OOCYTE. (4/153)

The cytoplasm of young oocytes of the ascidians contains high concentrations of proteins which are stainable with alkaline fast green at pH 8.1 and above. These proteins cannot be stained even with acid dyes at low pH unless RNA is removed. Deamination and formalin blockage of amino groups is incapable of destroying the net positive charge on these protein molecules in the presence of RNA, but these treatments destroy the charge if RNA is removed. It is therefore concluded that basic proteins and RNA exist as a nucleoprotein complex in the ribosomes of these young oocytes. The detectable RNA of the mature oocytes and unfertilized eggs shows no evidence of being associated with basic proteins.  (+info)

Amphioxus and ascidian Dmbx homeobox genes give clues to the vertebrate origins of midbrain development. (5/153)

The ancestral chordate neural tube had a tripartite structure, comprising anterior, midbrain-hindbrain boundary (MHB) and posterior regions. The most anterior region encompasses both forebrain and midbrain in vertebrates. It is not clear when or how the distinction between these two functionally and developmentally distinct regions arose in evolution. Recently, we reported a mouse PRD-class homeobox gene, Dmbx1, expressed in the presumptive midbrain at early developmental stages, and the hindbrain at later stages, with exclusion from the MHB. This gene provides a route to investigate the evolution of midbrain development. We report the cloning, genomic structure, phylogeny and embryonic expression of Dmbx genes from amphioxus and from Ciona, representing the two most closely related lineages to the vertebrates. Our analyses show that Dmbx genes form a distinct, ancient, homeobox gene family, with highly conserved sequence and genomic organisation, albeit more divergent in Ciona. In amphioxus, no Dmbx expression is observed in the neural tube, supporting previous arguments that the MHB equivalent region has been secondarily modified in evolution. In Ciona, the CiDmbx gene is detected in neural cells caudal to Pax2/5/8-positive cells (MHB homologue), in the Hox-positive region, but, interestingly, not in any cells rostral to them. These results suggest that a midbrain homologue is missing in Ciona, and argue that midbrain development is a novelty that evolved specifically on the vertebrate lineage. We discuss the evolution of midbrain development in relation to the ancestry of the tripartite neural ground plan and the origin of the MHB organiser.  (+info)

Retroelement dynamics and a novel type of chordate retrovirus-like element in the miniature genome of the tunicate Oikopleura dioica. (6/153)

Retrotransposable elements have played an important role in shaping eukaryotic DNA, and their activity and turnover rate directly influence the size of genomes. With approximately 15,000 genes within 65-75 megabases, the marine tunicate Oikopleura dioica, a nonvertebrate chordate, has the smallest and most compact genome ever found in animals. Consistent with a massive elimination of retroelements, only one apparently novel clade of non-long terminal repeat (non-LTR) retrotransposons was detected within 41 megabases of nonredundant genomic sequences. In contrast, at least six clades of non-LTR elements were identified in the less compact genome of the tunicate Ciona intestinalis. Unexpectedly, Ty3/gypsy-related Tor LTR retrotransposons presented an astonishing level of diversity in O. dioica. They were generally poorly or apparently not corrupted, indicating recent activity. Both Tor3 and Tor4b families bore an envelope-like open reading frame, suggesting possible horizontal acquisition through infection. The Tor4b envelope-like gene might have been obtained from a paramyxovirus (RNA virus). Tor3 and Tor4b are phylogenetically clearly distinct from vertebrate retroviruses (Retroviridae) and are more reminiscent of certain insect and plant sequences. Tor elements potentially represent a so far unknown, ancient type of infectious retroelement in chordates. Their distribution and transmission dynamics in tunicates and other chordates deserve further study.  (+info)

Bayesian inference of the metazoan phylogeny; a combined molecular and morphological approach. (7/153)

Metazoan phylogeny remains one of evolutionary biology's major unsolved problems. Molecular and morphological data, as well as different analytical approaches, have produced highly conflicting results due to homoplasy resulting from more than 570 million years of evolution. To date, parsimony has been the only feasible combined approach but is highly sensitive to long-branch attraction. Recent development of stochastic models for discrete morphological characters and computationally efficient methods for Bayesian inference has enabled combined molecular and morphological data analysis with rigorous statistical approaches less prone to such inconsistencies. We present the first statistically founded analysis of a metazoan data set based on a combination of morphological and molecular data and compare the results with a traditional parsimony analysis. Interestingly, the Bayesian analyses demonstrate a high degree of congruence between morphological and molecular data, and both data sets contribute to the result of the combined analysis. Additionally, they resolve several irregularities obtained in previous studies and show high credibility values for controversial groups such as the ecdysozoans and lophotrochozoans. Parsimony, on the contrary, shows conflicting results, with morphology being congruent to the Bayesian results and the molecular data set producing peculiarities that are largely reflected in the combined analysis.  (+info)

Evolutionary relationships of Aurora kinases: implications for model organism studies and the development of anti-cancer drugs. (8/153)

BACKGROUND: As key regulators of mitotic chromosome segregation, the Aurora family of serine/threonine kinases play an important role in cell division. Abnormalities in Aurora kinases have been strongly linked with cancer, which has lead to the recent development of new classes of anti-cancer drugs that specifically target the ATP-binding domain of these kinases. From an evolutionary perspective, the species distribution of the Aurora kinase family is complex. Mammals uniquely have three Aurora kinases, Aurora-A, Aurora-B, and Aurora-C, while for other metazoans, including the frog, fruitfly and nematode, only Aurora-A and Aurora-B kinases are known. The fungi have a single Aurora-like homolog. Based on the tacit assumption of orthology to human counterparts, model organism studies have been central to the functional characterization of Aurora kinases. However, the ortholog and paralog relationships of these kinases across various species have not been rigorously examined. Here, we present comprehensive evolutionary analyses of the Aurora kinase family. RESULTS: Phylogenetic trees suggest that all three vertebrate Auroras evolved from a single urochordate ancestor. Specifically, Aurora-A is an orthologous lineage in cold-blooded vertebrates and mammals, while structurally similar Aurora-B and Aurora-C evolved more recently in mammals from a duplication of an ancestral Aurora-B/C gene found in cold-blooded vertebrates. All so-called Aurora-A and Aurora-B kinases of non-chordates are ancestral to the clade of chordate Auroras and, therefore, are not strictly orthologous to vertebrate counterparts. Comparisons of human Aurora-B and Aurora-C sequences to the resolved 3D structure of human Aurora-A lends further support to the evolutionary scenario that vertebrate Aurora-B and Aurora-C are closely related paralogs. Of the 26 residues lining the ATP-binding active site, only three were variant and all were specific to Aurora-A. CONCLUSIONS: In this study, we found that invertebrate Aurora-A and Aurora-B kinases are highly divergent protein families from their chordate counterparts. Furthermore, while the Aurora-A family is ubiquitous among all vertebrates, the Aurora-B and Aurora-C families in humans arose from a gene duplication event in mammals. These findings show the importance of understanding evolutionary relationships in the interpretation and transference of knowledge from studies of model organism systems to human cellular biology. In addition, given the important role of Aurora kinases in cancer, evolutionary analysis and comparisons of ATP-binding domains suggest a rationale for designing dual action anti-tumor drugs that inhibit both Aurora-B and Aurora-C kinases.  (+info)

Definition of phylum chordata in the Definitions.net dictionary. Meaning of phylum chordata. What does phylum chordata mean? Information and translations of phylum chordata in the most comprehensive dictionary definitions resource on the web.
Cover: In their study, A. E. McDonald, G. C. Vanlerberghe and J. F. Staples (pp. 2627−2634) discovered that the electron transport chain protein alternative oxidase (AOX), which confers cyanide-resistant mitochondrial respiration, is widespread in the animal kingdom. AOX is found in species such as (from top left clockwise): the echinoderm Strongylocentrotus purpuratus (photo credit: Dr Louise Page), the hemichordate Saccoglossus kowalevskii (photo credit: Dr Chris Cameron), and the molluscs Mytilus californianus (photo credit: Dr Rich Palmer) and Lymnaea stagnalis (photo credit: Dr Louise Page). ...
100314397 Strongylocentrotus purpuratus , 100499018 Ciona intestinalis , 100526419 Saccoglossus kowalevskii , 102464115 Gorilla gorilla , 102466503 Sarcophilus harrisii , 102466558 Cricetulus griseus , 104795867 Capra hircus ...
Signal transduction pathways mediated by G protein-coupled receptors (GPCRs) and their intracellular coupling partners, the heterotrimeric G proteins, are crucial for several physiological functions in eukaryotes, including humans. This thesis describes a broad genomic survey and extensive comparative phylogenetic analysis of GPCR and G protein families from a wide selection of eukaryotes. A robust mining of GPCR families in fungal genomes (Paper I) provides the first evidence that homologs of the mammalian families of GPCRs, including Rhodopsin, Adhesion, Glutamate and Frizzled are present in Fungi. These findings further support the hypothesis that all main GPCR families share a common origin. Moreover, we clarified the evolutionary hierarchy by showing for the first time that Rhodopsin family members are found outside metazoan lineages. We also characterized the GPCR superfamily in two important model organisms (Amphimedon queenslandica and Saccoglossus kowalevskii) that belong to different ...
Alignment of the amino acid sequences of MSP-130 and isotig 00281. Sk: Saccoglossus kowalevskii (NCBI Acc. No. XP_002739468.1); Sp: Strongylocentrotus purpuratu
President and Scientific Director, Ontario Institute for Cancer Research and Director, P3G (Public Population Project in Genomics)President and Scientific Director, Ontario Institute for Cancer Research Scientific Director, P3GDr. Thomas J. Hudson is president and scientific director of the Ontario Institute for Cancer Research. He is implementing the institutes strategic plan, working with cancer research institutions across Ontario to leverage existing strengths. The plan focuses on prevention, early diagnosis, cancer targets and new therapeutics. Its innovation platforms include imaging and interventions, bio-repositories and pathology, genomics and high-throughput screening, and informatics and biocomputing. Dr. Hudson is recruiting more than 50 internationally recognized principal investigators.Dr. Hudson was the founder and Director of the McGill University and Genome Quebec Innovation Centre and Assistant-Director of the Whitehead/MIT Center for Genome Research. Dr. Hudson is ...
1. Hedges SB. The origin and evolution of model organism. Nature Reviews Genetics. 2003 ;3:838-849 2. Winchell CJ, Sullivan J, Cameron CB. et al. Evaluating hypotheses of deuterostome phylogeny and chordate evolution with new LSU and SSU ribosomal DNA data. Mol Biol Evol. 2002 ;19:762-776 3. Brusca RC, Brusca GJ. Invertebrates. Sunderland, Massachusetts: Sinauer. 1990 4. Abouheif E, Zardoya R, Meyer A. Limitations of metazoans 18S rRNA sequence data: implications for reconstructiong a phylogeny the animal kingdom and inferring the reality of the Cambrian explosion. J Mol Evol. 1998 ;47:394-405 5. Takezaki N, Figueroa F, Zaleska-Rutczynska Z. et al. Molecular phylogeny of early vertebrates: Monophyly of the Agnathans as revealed by sequences of 35 genes. Mol Biol Evol. 2003 ;20:287-292 6. Jollie MJ. The origin of chordates. Acta Zool. 1973 ;54:81-100 7. Philippe H, Lartillot N, Brinkmann H. Multigene analyses of bilaterian animals corroborate the monophyly of Ecdysozoa, Lophotrochozoa and ...
A draft of the complete human proteome has been available in UniProtKB/Swiss-Prot since 2008 and one of the current priorities of the Chordata protein annotation project is to improve the quality of human sequences provided.. See: What is the human complete proteome?. To this aim, we are updating sequences which show discrepancies with those predicted from the genome sequence. Dubious isoforms, sequences based on experimental artefacts and protein products derived from erroneous gene model predictions are also revisited. This work is in part done in collaboration with the Hinxton Sequence Forum (HSF), which allows active exchange between UniProt, HAVANA, Ensembl and HGNC groups, as well as with RefSeq database. UniProt is a member of the Consensus CDS project and we are in the process of reviewing our records to support convergence towards a standard set of protein annotation.. We also continuously update human entries with functional annotation, including novel structural, post-translational ...
The phylum chordata is found in the animal kingdom. This contains all of the animals that have a rod-like structure used to give them support. In most cases this is the spine or backbone. The common name for members of chordata is vertebrates, and those that do not belong to the phylum but are within the animal kingdom are known as invertebrates. Invertebrates can however have an external skeleton, for example crabs. Within chordata there are five classes of animals. These are fish, amphibians, reptiles, birds and mammals. We can tell the difference through three dividing factors: ...
Conway Morris and Caron (2012) have recently published an account of virtually all the available information on Pikaia gracilens, a well-known Cambrian fossil and supposed basal chordate, and propose on this basis some new ideas about Pikaias anatomy and evolutionary significance. Chief among its chordate-like features are the putative myomeres, a regular series of vertical bands that extends the length of the body. These differ from the myomeres of living chordates in that boundaries between them (the myosepta) are gently curved, with minimal overlap, whereas amphioxus and vertebrates have strongly overlapping V- and W-shaped myomeres. The implication, on biomechanical grounds, is that myomeres in Pikaia exerted much less tension on the myosepta, so the animal would have been incapable of swimming as rapidly as living chordates operating in the fast-twitch mode used for escape and attack. Pikaia either lacked the fast-twitch fibers necessary for such speeds, having instead only slow-twitch fibers, or
നട്ടെല്ലുള്ള ജീവികളും അവയുമായി അടുത്ത ജനിതകബന്ധം പുലർത്തുന്ന നട്ടെല്ലില്ലാത്ത ചില ജീവികളും ഉൾപ്പെടുന്ന ജന്തുക്കളിലെ ഒരു ഫൈലമാണ് കോർഡേറ്റ (Chordata). ഈ ഫൈലത്തിൽ ഉൾപ്പെടുന്ന ജീവികളാണ് കോർഡേറ്റുകൾ (Chordates). ഈ ഫൈലത്തിന്റെ സബ് ഫൈലങ്ങൾ യൂറോകോർഡേറ്റ, സെഫലോകോർഡേറ്റ, ക്രാനിയേറ്റ എന്നിവയാണ്, ഹെമികോർഡേറ്റ നാലാമത്തെ സബ് ഫൈലമായി കരുതിയിരുന്നുവെങ്കിലും ഇപ്പോൾ ഹെമികോർഡേറ്റ ഒരു ഫൈലമായാണ് ...
Putnam NH, Butts T, Ferrier DE, Furlong RF, Hellsten U, Kawashima T, Robinson-Rechavi M, Shoguchi E, Terry A, Yu JK, Benito-Gutierrez EL, Dubchak I, Garcia-Fernandez J, Gibson-Brown JJ, Grigoriev IV, Horton AC, de Jong PJ, Jurka J, Kapitonov VV, Kohara Y, Kuroki Y, Lindquist E, Lucas S, Osoegawa K, Pennacchio LA, Salamov AA, Satou Y, Sauka-Spengler T, Schmutz J, Shin-I T, Toyoda A, Bronner-Fraser M, Fujiyama A, Holland LZ, Holland PW, Satoh N, Rokhsar DS.The amphioxus genome and the evolution of the chordate karyotype.
Disclaimer: The Animal Diversity Web is an educational resource written largely by and for college students. ADW doesnt cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control. ...
Disclaimer: The Animal Diversity Web is an educational resource written largely by and for college students. ADW doesnt cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control. ...
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Hank introduces us to ourselves by taking us on a journey through the fascinatingly diverse phyla known as chordata. And the next time someone asks you who you are, you can give them the facts: youre a mammalian amniotic tetrapodal sarcopterygian osteichthyen gnathostomal vertebrate cranial chordate.
additional source King, C.M.; Roberts, C.D.; Bell, B.D.; Fordyce, R.E.; Nicoll, R.S.; Worthy, T.H.; Paulin, C.D.; Hitchmough, R.A.; Keyes, I.W.; Baker, A.N.; Stewart, A.L.; Hiller, N.; McDowall, R.M.; Holdaway, R.N.; McPhee, R.P.; Schwarzhans, W.W.; Tennyson, A.J.D.; Rust, S.; Macadie, I. (2009). Phylum Chordata: lancelets, fishes, amphibians, reptiles, birds, mammals, in: Gordon, D.P. (Ed.) (2009). New Zealand inventory of biodiversity: 1. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. pp. 431-554. [details] ...
additional source King, C.M.; Roberts, C.D.; Bell, B.D.; Fordyce, R.E.; Nicoll, R.S.; Worthy, T.H.; Paulin, C.D.; Hitchmough, R.A.; Keyes, I.W.; Baker, A.N.; Stewart, A.L.; Hiller, N.; McDowall, R.M.; Holdaway, R.N.; McPhee, R.P.; Schwarzhans, W.W.; Tennyson, A.J.D.; Rust, S.; Macadie, I. (2009). Phylum Chordata: lancelets, fishes, amphibians, reptiles, birds, mammals. ,em,in: Gordon, D.P. (Ed.) (2009). New Zealand inventory of biodiversity: 1. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia.,/em, pp. 431-554. [details] ...
We are talking about the frogs. Frogs belong to the phylum Chordata and class Amphibia. They have the potential to live on water as well as on land.
Domain Eucarya Kingdom Animalia Phylum Chordata Subphylum Vertebrata Class Mammalia Mammals evolved on land during the late Triassic period, but were no...
Domain: Eukaryota • Regnum: Animalia • Phylum: Chordata • Subphylum: Vertebrata • Infraphylum: Gnathostomata • Classis: Chondrichthyes • Subclassis: Holocephali • Ordo: Chimaeriformes • Familia: Chimaeridae • Genus: Hydrolagus • Species: Hydrolagus alberti Bigelow and Schroeder, 1951 ...
Domain: Eukaryota • Regnum: Animalia • Phylum: Chordata • Subphylum: Vertebrata • Infraphylum: Gnathostomata • Superclassis: Osteichthyes • Classis: Actinopterygii • Subclassis: Neopterygii • Infraclassis: Teleostei • Superordo: Acanthopterygii • Ordo: Gasterosteiformes • Familia: Gasterosteidae • Genus: Spinachia • Species: Spinachia spinachia (Linnaeus, 1758) ...
TY - JOUR. T1 - A Homolog of the Vertebrate Thyrostimulin Glycoprotein Hormone α Subunit (GPA2) is Expressed in Amphioxus Neurons. AU - Tando, Yukiko. AU - Kubokawa, Kaoru. PY - 2009/6/1. Y1 - 2009/6/1. N2 - The cystine-knot glycoprotein hormone α (GPA) family regulates gonadal and thyroid functions in ver-tebrates. Little is known concerning GPA family members in primitive chordates. A previous genomic analysis revealed the presence of two genes homologous to the thyrostimulin a subunit (GPA2) in an amphioxus (Branchiostoma floridae); however only one GPA2 homolog contained both the cystine-knot structure and N-glycosylation site characteristic of family members. Gene-specific PCR was used to obtain the cDNA and genomic sequences of the GPA2 homolog of the amphioxus Branchiostoma belcheri. Whole-mount in situ hybridization revealed GPA2 mRNA expression in the anterior part of the nerve cord and on the left side of the central canal. Because amphioxus possesses only one true GPA2 homolog, ...
The death receptor (DR)-mediated apoptosis pathway is thought to be unique to vertebrates. However, the presence of DR-encoding genes in the sea urchin and the basal chordate amphioxus prompted us to reconsider, especially given that amphioxus contains 14 DR proteins and hundreds of death domain (DD)-containing adaptor proteins. To understand how the extrinsic apoptotic pathway was originally established and what the differences in signaling are between invertebrates and vertebrates, we performed functional studies of several genes that encode DDs in the amphioxus Branchiostoma belcheri tsingtauense (Bbt). First, we observed that the increased abundance of Bbt Fas-associated death domain 1 (BbtFADD1) in HeLa cells resulted in the formation of death effector filamentous structures in the cytoplasm and the activation of the nuclear factor κB pathway, whereas BbtFADD2 protein was restricted to the nucleus, although its death effector domain induced apoptosis when in the cytoplasm. We further ...
Previous studies have shown the presence of Plg only in the jawed vertebrates [3,32], and a Plgl molecule has been discovered in the amphioxus B. belcheri, a basal chordate [19]. However, molecular cloning and identification of the putative Plgl in B. belcheri was lacking. In the present paper we demonstrate for the first time the presence of a kringle domain-containing protease with Plgl activity, named BbPlgl, in B. belcheri. The deduced 430-amino-acids long protein, BbPlgl, is structurally characterized by the presence of a putative N-terminal signal peptide of 16 amino acids, 2 kringle domains with the lysine-binding site structure in the N-terminus, a serine protease domain with the putative tPA-cleavage site (between Arg297 and Val298) in the C-terminus, the catalytic triad His237-Asp288-Ser379 expected for protease function, and a potential N-linked glycosylation site, which are all typical of Plgs. Moreover, the recombinant BbPlgl is readily activated by human uPA, and exhibits Plgl ...
Looking for online definition of phylum Chordata in the Medical Dictionary? phylum Chordata explanation free. What is phylum Chordata? Meaning of phylum Chordata medical term. What does phylum Chordata mean?
LanceletDB: The Lancelet (Branchiostoma belcheri) Genome Sequence and Annotation Project Database at Sun Yat-sen University, Anlong Xu, Shangwu Chen, Shengfeng Huang, Yonggui Fu, Shengfeng Huang, Shaochun Yuan, Leiming You
LanceletDB: The Lancelet (Branchiostoma belcheri) Genome Sequence and Annotation Project Database at Sun Yat-sen University, Anlong Xu, Shangwu Chen, Shengfeng Huang, Yonggui Fu, Shengfeng Huang, Shaochun Yuan, Leiming You
A common feature of chemosensory systems is the involvement of G protein-coupled receptors (GPCRs) in the detection of environmental stimuli. Several lineages of GPCRs are involved in vertebrate olfaction, including trace amine-associated receptors, type 1 and 2 vomeronasal receptors and odorant receptors (ORs). Gene duplication and gene loss in different vertebrate lineages have lead to an enormous amount of variation in OR gene repertoire among species; some fish have fewer than 100 OR genes, while some mammals possess more than 1000. Fascinating features of the vertebrate olfactory system include allelic exclusion, where each olfactory neuron expresses only a single OR gene, and axonal guidance where neurons expressing the same receptor project axons to common glomerulae. By identifying homologous ORs in vertebrate and in non-vertebrate chordates, we hope to expose ancestral features of the chordate olfactory system that will help us to better understand the evolution of the receptors themselves and
List of words make out of Branchiostoma. Anagrams and Words made out of Branchiostoma. Find Scrabble Point of Branchiostoma. Definition of Branchiostoma. Puzzle Solver.
The evolutionary relationships between the chordate groups and between chordates as a whole and their closest deuterostome relatives have been debated since 1890. Studies based on anatomical, embryological, and paleontological data have produced different family trees. Some closely linked chordates and hemichordates, but that idea is now rejected.[4] Combining such analyses with data from a small set of ribosome RNA genes eliminated some older ideas, but opened up the possibility that tunicates (urochordates) are basal deuterostomes, surviving members of the group from which echinoderms, hemichordates and chordates evolved.[42] Some researchers believe that, within the chordates, craniates are most closely related to cephalochordates, but there are also reasons for regarding tunicates (urochordates) as craniates closest relatives.[4][43]. Since early chordates have left a poor fossil record, attempts have been made to calculate the key dates in their evolution by molecular phylogenetics ...
The evolutionary relationships between the chordate groups and between chordates as a whole and their closest deuterostome relatives have been debated since 1890. Studies based on anatomical, embryological, and paleontological data have produced different family trees. Some closely linked chordates and hemichordates, but that idea is now rejected.[4] Combining such analyses with data from a small set of ribosome RNA genes eliminated some older ideas, but opened up the possibility that tunicates (urochordates) are basal deuterostomes, surviving members of the group from which echinoderms, hemichordates and chordates evolved.[42] Some researchers believe that, within the chordates, craniates are most closely related to cephalochordates, but there are also reasons for regarding tunicates (urochordates) as craniates closest relatives.[4][43] Since early chordates have left a poor fossil record, attempts have been made to calculate the key dates in their evolution by molecular phylogenetics ...
Phylum Chordata includes the vertebrates. Although not as common as the invertebrates, teeth and bones from different classes of vertebrate animals can be found at Canal sites.
The most complex group of animals to exist are the Chordates; comprising of all vertebrates and some invertebrates the Chordates all share and experience certain characteristics at some stage in their development.. These characteristics are what defines the chordates as complex animals. A notochord, the cartilage between the nerve chord and the spinal cord is only present in chordates. The dorsal hollow nerve chord will eventually develop into the central nervous system. Pharyngeal slits are gill like structures, we lose these before leaving the womb but some chordates keep them their whole lives. the final characteristic that defines and organism as part of the phyla chordata is a post anal tail. In humans, this is our coccyx.. Contain all of these characteristics and its safe to say youre a complex Chordate.. From Crash Course: Biology on YouTube presented by Hank Green. ...
Cephalochordates, the sister group of vertebrates + tunicates, are evolving particularly slowly. Therefore, genome comparisons between two congeners of Branchiostoma revealed so many conserved noncoding elements (CNEs), that it was not clear how many are functional regulatory elements. To more effectively identify CNEs with potential regulatory functions, we compared noncoding sequences of genomes of the most phylogenetically distant cephalochordate genera, Asymmetron and Branchiostoma, which diverged approximately 120-160 million years ago. We found 113,070 noncoding elements conserved between the two species, amounting to 3.3% of the genome. The genomic distribution, target gene ontology, and enriched motifs of these CNEs all suggest that many of them are probably cis-regulatory elements. More than 90% of previously verified amphioxus regulatory elements were re-captured in this study. A search of the cephalochordate CNEs around 50 developmental genes inseveral vertebrate genomes revealed ...
p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.,/p> ,p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.,/p> ,p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).,/p> ,p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x,sup>64,/sup> + x,sup>4,/sup> + x,sup>3,/sup> + x + 1. The algorithm is described in the ISO 3309 standard. ,/p> ,p class=publication>Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.,br /> ,strong>Cyclic redundancy and other checksums,/strong>,br /> ,a href=http://www.nrbook.com/b/bookcpdf.php>Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993),/a>),/p> Checksum:i ...
Edmund Beecher Wilson experimented with Amphioxus (Branchiostoma) embryos in 1892 to identify what caused their cells to differentiate into new types of cells during the process of development. Wilson shook apart the cells at early stages of embryonic development, and he observed the development of the isolated cells. He observed that in the normal development of Amphioxus, all three main types of symmetry, or cleavage patterns observed in embryos, could be found. Wilson proposed a hypothesis that reformed the Mosaic Theory associated with Wilhelm Roux in Germany.. Format: Articles Subject: Experiments ...
Austroblechnum lanceolatum and A. norfolkianum are a species pair that need further taxonomic investigation. Exact distinctions between these species are difficult. Chambers & Farrant (1998) suggest that this is due to hybridisim but the basis for that suggestion is not clear. Most field botanists distinguish these two species on the basis of distribution and ecology with A. norfolkianum known only from northern New Zealand where it is mostly found on offshore islands. In this area it is typically found on rodent-free, sea bird islands where it is a conspicuous member of the shaded forest floor of petrel colonies as well as the more usual shaded bank and cliff habitats. Austroblechnum norfolkianum usually has brighter green, succulent fronds without the darker pink or maroon pigmentation often seen in A. lanceolatum, and the pinna of A. norfolkianum are consistently falcate (those of A.lanceolatum less often so), while the fertile fronds of A. norfolkianum are said to be shorter than sterile ...
This was written before the amphioxus genome had been sequenced, so its not up to date. However, the article presents considerable information derived from cDNA analysis. ...
A chordate is an animal belonging to the phylum Chordata; chordates possess a notochord, a hollow dorsal nerve cord, pharyngeal slits, an endostyle, and a post-anal tail, for at least some period of their life cycle. Chordates are deuterostomes, as during the embryo development stage the anus...
The notochord is an elongate, rod-like, skeletal structure dorsal to the gut tube and ventral to the nerve cord. The notochord should not be confused with the backbone or vertebral column of most adult vertebrates. The notochord appears early in embryogeny and plays an important role in promoting or organizing the embryonic development of nearby structures. In most adult chordates the notochord disappears or becomes highly modified. In some non-vertebrate chordates and fishes the notochord persists as a laterally flexible but incompressible skeletal rod that prevents telescopic collapse of the body during swimming. The nerve cord of chordates develops dorsally in the body as a hollow tube above the notochord. In most species it differentiates in embryogeny into the brain anteriorly and spinal cord that runs through the trunk and tail. Together the brain and spinal cord are the central nervous system to which peripheral sensory and motor nerves connect. The visceral (also called pharyngeal or ...
The notochord is an elongate, rod-like, skeletal structure dorsal to the gut tube and ventral to the nerve cord. The notochord should not be confused with the backbone or vertebral column of most adult vertebrates. The notochord appears early in embryogeny and plays an important role in promoting or organizing the embryonic development of nearby structures. In most adult chordates the notochord disappears or becomes highly modified. In some non-vertebrate chordates and fishes the notochord persists as a laterally flexible but incompressible skeletal rod that prevents telescopic collapse of the body during swimming. The nerve cord of chordates develops dorsally in the body as a hollow tube above the notochord. In most species it differentiates in embryogeny into the brain anteriorly and spinal cord that runs through the trunk and tail. Together the brain and spinal cord are the central nervous system to which peripheral sensory and motor nerves connect. The visceral (also called pharyngeal or ...
Acorn worms, also known as enteropneust (literally, gut-breathing) hemichordates, are marine invertebrates that share features with echinoderms and chordates. Together, these three phyla comprise the deuterostomes. Here we report the draft genome sequences of two acorn worms, Saccoglossus kowalevs …
Deuterostomes (animals with secondary mouths) are generally accepted to develop the mouth independently of the blastopore. However, it remains largely unknown whether mouths are homologous among all deuterostome groups. Unlike other bilaterians, in amphioxus the mouth initially opens on the left lateral side. This peculiar morphology has not been fully explained in the evolutionary developmental context. We studied the developmental process of the amphioxus mouth to understand whether amphioxus acquired a new mouth, and if so, how it is related to or differs from mouths in other deuterostomes. The left first somite in amphioxus produces a coelomic vesicle between the epidermis and pharynx that plays a crucial role in the mouth opening. The vesicle develops in association with the amphioxus-specific Hatschek nephridium, and first opens into the pharynx and then into the exterior as a mouth. This asymmetrical development of the anterior-most somites depends on the Nodal-Pitx signaling unit, and the
The phylum chordata represents the whole diverse class of vertebrates, animals with a vertebral column, as well as lancelets and tunicates. Two fertilization strategies are employed by members of chordata: internal fertilization, where the gametes, or sperm and egg, meet inside the body of one parent, and external ...
uuid: d72bba32-1f0a-434f-bed7-ad8ca008b69b, type: records, etag: 6091265d9adac0f371377c4a13f2ca4620c71ff8, data: { dwc:specificEpithet: rufus, dwc:countryCode: US, dwc:county: Santa Barbara, dwc:order: Apodiformes, dwc:individualCount: 1, dwc:occurrenceID: urn:catalog:SBMNH:AV:2442, dcterms:language: en, id: urn:catalog:SBMNH:AV:2442, dwc:establishmentMeans: native, dwc:stateProvince: California, dwc:eventDate: 1972, dwc:institutionCode: SBMNH, dwc:country: United States, dwc:collectionCode: AV, dwc:occurrenceStatus: present, dwc:kingdom: Animalia, dwc:decimalLatitude: 34.4547222, dwc:georeferenceVerificationStatus: requires verification, dwc:basisOfRecord: PreservedSpecimen, dwc:genus: Selasphorus, dwc:continent: North America, dwc:family: Trochilidae, dwc:higherClassification: Animalia:Chordata:Aves:Trochiliformes:Trochilidae:Selasphorus, dwc:phylum: Chordata, dwc:locality: ...
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bfloGFPa1 is a basic (constitutively fluorescent) green fluorescent protein published in 2014, derived from Branchiostoma floridae. It has very low acid sensitivity.
tunicate: Any member of the subphylum Tunicata (Urochordata) of the phylum Chordata. Small marine animals, they are found in great numbers throughout the seas of the world. Adult members...
Phylum Chordata : It includes highest evolved animals of the animals kingdom. Chief characteristics of the phylum are : (a)Notochord : A dorsal solid notochord is present throughout life or in larval stages. (b)Nerve cor…
Natura - nature Mundus - physical world;material world Naturalia Biota Domain Eukaryota - eukaryotes Kingdom Animalia - animals Subkingdom Bilateria - bilaterians;triploblastic animals Branch Deuterostomia - deuterostomes Infrakingdom Chordonia Phylum Chordata - chordates Subphylum Vertebrata - vertebrates Infraphylum Gnathostomata - jawed vertebrates Superclass Tetrapoda - tetrapods Superorder Reptiliomorpha 1 Order Anthracosauria H,N,P,R,B,L; Ref:M.J. Benton, 2005:394; Count: 3f;6g;1s Genus Anthracosaurus H,N,P,R,B,L; Count: 1s Genus Diplovertebron H,N,P,R,B,L Family Eogyrinidae H,N,P,R,B,L; Ref:B. Gardiner et al., 1989 1 Family Archeriidae H,N,P,R,B,L 1 Suborder Embolomeri H,N,P,R,B,L; Ref:1988 2 Family Pholidogasteridae H,N,P,R,B,L 2 Suborder Gephyrostegida H,N,P,R,B,L; Ref:1988 3 ? Unnamed H,N,P,R,B,L; Ref:1988 ...
The word Chordate is derived from the Greek word, chord which means cord or string and ata means bearing. They have 49,000 species up till now from which there are 2500 species of amphibian, 9000 birds, 4500 mammals, and around 6000 reptiles. They vary in size from medium to large, with exceptions of the gigantic blue whale and the smallest fish. They are considered as the most ecologically successful and largest group today. Chordates are able to occupy every type of habitat. They are found in the sea (marine), freshwater (aquatic), in the air (aerial) and on land (terrestrial), etc. from the poles to the equator. They have notochord or backbone and have well-developed body systems. ...
Module 13 in Exploring Creation Biology - Phylum Chordata. This is where vertebrates are found. Yes, this is where humans are classified, right along with this lovely Perch. :D Look at these lovies! Nice big specimens. We pray for great weather when it is time for the Perch dissection. Yes, it does smell and having that…
Scientific Name: Addax nasomaculatus Kingdom: Animalia Phylum: Chordata Class: Mammal Order: Artiodactyla Family: Bovidae Subfamily: Hippotraginae Genus: Addax
Chordata[edit]. The CNS of chordates differs from that of other animals in being placed dorsally in the body, above the gut and ...
It is found in Homo sapiens, and has the following lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; ...
The specific lineage of TMEM156 is: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; ...
ISBN 978-81-7133-903-7. Bhatnagar, MC; Bansal, G (2009). Non-Chordata. Delhi: Krishna Prakashan Media. pp. 153-154. ISBN 81- ...
"Eucariota, Animalia, Chordata". Georgian Biodiversity Database. Institute of Ecology. 2015. Retrieved 7 June 2016. "2016 წლის ...
... chordata Suter, 1908. Retrieved through: World Register of Marine Species on 19 May 2010. Turritella chrysotoxa ... 1822 Turritella chordata Suter, 1908 Turritella chrysotoxa Tomlin, 1825 Turritella cingulata Sowerby, 1825 Turritella ...
... chordata (Suter, 1908). Retrieved through: World Register of Marine Species on 15 April 2010. Aoteadrillia ... Species brought into synonymy Aoteadrillia chordata (Suter, 1908): synonym of Aoteadrillia wanganuiensis (Hutton, 1873) ...
Although the name Chordata is attributed to William Bateson (1885), it was already in prevalent use by 1880. Ernst Haeckel ... The Chordata and Ambulacraria form the superphylum Deuterostomia, composed of the deuterostomes. Attempts to work out the ... The current consensus is that chordates are monophyletic, meaning that the Chordata include all and only the descendants of a ... A chordate is an animal belonging to the phylum Chordata; chordates possess a notochord, a hollow dorsal nerve cord, pharyngeal ...
... chordata (Strebel, 1908). Retrieved through: World Register of Marine Species on 17 April 2010. Chlanidota ... Species within the genus Chlanidota include: Chlanidota anomala Kantor & Harasewych, 2008 Chlanidota chordata (Strebel, 1908) ...
Haaramo, Mikko (2007). "Chordata - lancets, tunicates, and vertebrates". Mikko's Phylogeny Archive. Retrieved 30 December 2016 ...
Ryggsträngsdjur: lansettfiskar - broskfiskar, Chordata: Branchiostomatidae - Chondrichthyes. ArtDatabanken, Uppsala Sven O. ...
Phylum Chordata [p. 24] Subphylum 1. Hemichordata (e.g., Balanoglossus, Cephalodiscus, Rhabdopleura) Subphylum 2. ...
That would at least circumscribe the Chordata. However, even the notochord would be a less fundamental criterion than aspects ... it has very little circumscriptional significance except within the Chordata. The Vertebrata as a subphylum comprises such a ...
William Bateson (1885) was the first to advocate chordate aflinities of Enteropneusta and include them into Phylum Chordata. ... included them in Phylum Chordata. Hyman (1959), however, placed them near Echinodermata and gave Hemichordata a status of an ...
Phylum Chordata Subphylum Vetulicolia Class Vetulicolida Genus NesonektrisN. aldridgei Family Vetulicolidae Genus Vetulicola V ...
For example, Animalia Arthropoda comes before Animalia Chordata. Links to Wikispecies and to the Smithsonian should show full ...
Apart from mating during the rutting season, water deer are solitary animals, and males are highly territorial. Each buck marks out his territory with urine and feces. Sometimes a small pit is dug and it is possible that in digging, the male releases scent from the interdigital glands on its feet. The male also scent-marks by holding a thin tree in his mouth behind the upper canines and rubbing his preorbital glands against it. Males may also bite off vegetation to delineate territorial boundaries.[citation needed] Water deer use their tusks for territorial fights and are not related to carnivores. Confrontations between males begin with the animals walking slowly and stiffly towards each other, before turning to walk in parallel 10-20 m / 32-64 ft. apart, to assess one another. At this point, one male may succeed in chasing off his rival, making clicking noises during the pursuit. However, if the conflict is not resolved at the early stage, the bucks will fight. Each would try to wound the ...
The pickerel frog is a medium sized gray or tan frog marked with seven to twenty-one irregular rectangular dark brown spots which are oriented in two columns down its back.[3] The distinctive rectangular spots of the pickerel frog may blend together to form a long rectangle along the back. All leopard frogs have circular spots. In addition, pickerel frogs have prominent dorsolateral ridges that are unbroken. Another important distinguishing mark is the orange or yellow flash pattern found on the inner surface of the hind legs of pickerel frogs. The frog must be picked up to examine this, as the legs cover the coloration otherwise. The plains leopard frog (Lithobates blairi) exhibits this coloration as well, but the dorsolateral ridges are interrupted and inset medially in that species. The front toes of pickerel frogs are not webbed, a morphological characteristic for some frogs of the genus Rana and some frogs of the genus Lithobates. This allows pickerel frogs to be fit for terrestrial life. ...
The brain volume is quite small, about 500 to 550 cm3, not much larger than that of Australopithecus afarensis and Australopithecus africanus or modern-day chimpanzees. In P. boisei the foramen magnum is much shorter than in P. robustus. In addition, the cranial variation of P. boisei is remarkably high.[6] The adult males were larger on average than females (sexual dimorphism), as was the case in virtually all australopithecine species. Males weighed some 49 kg (108 lb) and stood about 1.37 m (4 ft 6 in) tall, while females weighed about 34 kg (75 lb) and were 1.24 m (4 ft 1 in) tall.[1] It had a skull highly specialized for heavy chewing and several traits seen in modern-day gorillas. The molar teeth were very large, with an area over twice that of modern humans.[7] The species is sometimes referred to as "Nutcracker Man" because it had the biggest, flattest cheek teeth and the thickest enamel of any known hominin.[8] P. boisei had large chewing muscles attached to a pronounced sagittal crest. ...
... s are widespread and often abundant in north and north-east Australia, especially north-east Queensland, and are common as far south as Victoria. They are also found in southern New Guinea and as rare vagrants in New Zealand and the northern part of Western Australia. The population in northern Australia is estimated at between 20,000 and 100,000 birds and in southern Australia, 1,000 birds. The numbers of individuals in New Guinea are unknown.[10] Until 1961, Brolgas were thought to be the only species of crane in Australia, until the Sarus Crane was also located in Queensland.[12] Brolgas are non-migratory but move to different areas in response to seasonal rains and drying. In northern Australia, during the dry season (June to November), populations of brolgas are gregarious and largely occupy a strip of freshwater marshland up to 50 kilometres (31 mi) wide, lying between the coastal hills and the saline mangrove swamps that fringe the sea. They also visit freshwater lagoons in the ...
Chordata Clade:. Dinosauria Order:. Saurischia Family:. †Herrerasauridae Genus:. †Herrerasaurus. Reig, 1963 Species: †H. ...
Baillie, J. and Groombridge, B. (compilers and editors) (1996). 1996 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland. Grubb, P. 2004. Myosciurus pumilio. In: IUCN 2004. 2004 IUCN Red List of Threatened Species. Downloaded on 14 March 2006. Emmons L.H. 1980. Ecology and resource partitioning among nine species of African rain forest squirrels. Ecological Monographs 50 (1): 31-54 Emmons L.H. 1979. Observations on litter size and development of some African rainforest squirrels. Biotropica 11 (3): 207-213 Emmons L.H. 1979. A note on the forefoot of Myosciurus pumilio. Journal of Mammalogy 60 (2): 431-432 Gharaibeh B.M. and Jones C. 1996 Myosciurus pumilio. Mammalian Species 523: 1-3: 17 Jones, C., H. Setzer. 1970. Comments on Myosciurus Pumilio. Journal of Mammalogy, 51/4: "813-814. Macdonald, D. (ed.) 2001. The New Encyclopedia of Mammals. Oxford University Press, Oxford, New York. Nowak, R.M. (ed.) 1999. Walkers Mammals of the World. Sixth edition. The Johns Hopkins University ...
... is an extinct gazelle which existed in what is now Ethiopia during the Pliocene epoch. It was described by Denis Geraads, René Bobe and Kaye Reed in 2012. Approximately the size of a living dorcas gazelle, the animal was noted for its unusual, spiral horn cores.[1]. ...
The striated pardalote's plumage varies considerably across its range.[3] The crown is black, with subspecies substriatus, striatus and ornatus having white streaks.[2] The eyebrow is white, starting with a yellow mark near the beak.[2] All races have a white stripe on the wing and olive backs.[4] The nominate race has a yellow spot on the wing, whilst the other subspecies have a red dot.[2] The male and female are similar, juveniles have duller plumage.[4] Similar species include the spotted pardalote and the red-browed pardalote.[2] ...
Phylum: Chordata. *Class: Mammalia. *Order: Cetartiodactyla. *Clade: Cetancodontamorpha. *Suborder: Whippomorpha. *Infraorder: ...
The brown-cheeked fulvetta nests from January to June with a peak in January-February. In a study by Anoop Das and Vijayan, a total of 38 nests were found in 50,000 square metres. The nest is a cup, built with green moss, rootlets, lichen, leaves and grass lined with rootlets and placed in a fork or suspended from the twigs at a mean height of 68.21 cm from ground. Mean nest width was 91.8 mm and depth 48.7 mm.. Clutch size was two to three eggs and the incubation period is 10 ± 2 days and the nestling period is 12 ± 2 days. Hatching success was 55% while the nestling success was 32%. The most preferred plants for nesting were shrubs of the species Lasianthus ciliatus (36%) followed by the Saprosma fragrans (27%) and Thottea siliquosa (23%).. They tended to locate their nests at central position just near the main stem. A principal component analysis of the nest site variables showed nest height, concealment, plant height and canopy cover as the major parameters in nest site selection, ...
It has generally been thought that brain size increased along the human line especially rapidly at the transition between species, with H. habilis brain size smaller than that of H. ergaster / H. erectus, jumping from about 600-650 cc (37-40 cu in) in H. habilis to about 900-1,000 cc (55-61 cu in) in H. ergaster and H. erectus.[25][23] However, a 2015 study showed that the brain sizes of H. habilis, H. rudolfensis, and H. ergaster generally ranged between 500-900 cc (31-55 cu in) after reappraising the brain volume of OH 7 from 647-687 cc (39.5-41.9 cu in) to 729-824 cc (44.5-50.3 cu in).[23] This does, nonetheless, indicate a jump from australopithecine brain size which generally ranged from 400-500 cc (24-31 cu in).[25] The brain anatomy of all Homo features an expanded cerebrum in comparison to australopithecines. The pattern of striations on the teeth of OH 65 slanting right, which may have been accidentally self-inflicted when the individual was pulling a piece of meat with its teeth and ...
The males of this species grow to maximum total length of 73 cm (29 in): body 58 cm (23 in), tail 15 cm (5.9 in). Females grow to a maximum total length of 58 cm (23 in). The males are surprisingly long and slender compared to the females.[3]. The head has a short snout, more so in males than in females. The eyes are large and surrounded by 9-16 circumorbital scales. The orbits (eyes) are separated by 7-9 scales. The nostril is like a slit and separated from the eye by two scales. The eye and the supralabials are separated by a single row of scales. The supralabials number 7-10, of which the fourth is enlarged.[3] The body is covered with elongated, heavily keeled dorsal scales that give this animal a unique 'shaggy' idea to its skin, almost bristly appearance. The scales around the head and neck are the longest, decreasing posteriorly. Midbody, the dorsal scales are in 15-19 rows. There are 149-166 ventral scales and 35-64 subcaudals. The anal scale is single.[2][3]. ...
It is widespread in the tropical and subtropical waters of the Indo-Pacific as far north as Japan and east to the coasts of the Americas,[1] including the Red Sea.[3] In 2000, its presence was reported in the Mediterranean Sea; since then, it has continued to disperse and is now well established in some areas.[4] This species is considered as part of the Lessepsian migration.[5] It has spread rapidly through the Mediterranean from its origin in the Suez Canal, the first records being off Israel in 2000 and it had reached the southern coast of Spain[6] and as far north as the Gulf of Lions by 2007.[7] Scientists have determined that the fish in the Mediterranean are all descended from a small number of ancestors, possibly as a result of a single invasion event, and are not as genetically variable as their conspecifics in the Red Sea.[7] ...
This species is medium in length, slender-bodied, and triangular in cross-section, with a short, pointed tail. It can grow to a maximum of about 1.3 m (4.3 ft), but adults usually average around 0.8 m (2.6 ft). The head is flat and slightly distinct from the neck. The eyes are small to medium in size, black with round pupils. Dorsal scales are smooth and glossy with scales of the vertebral row enlarged and hexagonal. Dorsal scale count is 15 - 15 - 15.[1] It is syntopic with the lesser black krait (Bungarus lividus), but can be separated by the enlarged dorsal vertebral scales. The number of ventral and subcaudals are higher than in all other Bungarus species (216-231 ventrals and 47-57 subcaudals).[2]. ...
Altaic TigerAmur TigerAnamaliaCarnivoraCatChordataDangerousDeadlyFelidaeHorizontal OrientationKorean TigerLandscape Orientation ...
The Chordata protein annotation project focuses on the manual annotation of chordata-specific proteins as well as those that ... Annotation of other mammalian and chordata proteins. In addition to the review of the human proteome, other mammalian and non- ... mammalian chordata proteins are increasingly being manually annotated with special emphasis on species such as Xenopus laevis, ... complete human proteome has been available in UniProtKB/Swiss-Prot since 2008 and one of the current priorities of the Chordata ...
Meaning of phylum chordata. What does phylum chordata mean? Information and translations of phylum chordata in the most ... Definition of phylum chordata in the Definitions.net dictionary. ... Chordata, phylum Chordata(noun). comprises true vertebrates and ... Get even more translations for phylum chordata ». Translation. Find a translation for the phylum chordata definition in other ... What does phylum chordata mean?. Definitions for phylum chordata. Here are all the possible meanings and translations of the ...
Chordata[edit]. The phylum "chordata" is found in the animal kingdom. This contains all of the animals that have a rod-like ... Within "chordata" there are five classes of animals. These are fish, amphibians, reptiles, birds and mammals. We can tell the ... The common name for members of "chordata" is vertebrates, and those that do not belong to the phylum but are within the animal ...
Hank introduces us to ourselves by taking us on a journey through the fascinatingly diverse phyla known as chordata. And the ... upbeat music) The phylum Chordata accounts for all 52,000 species of vertebrates on Earth, and several thousand species of ...
Frogs belong to the phylum Chordata and class Amphibia. They have the potential to live on water as well as on land. ... Frogs belong to the phylum Chordata and class Amphibia. They have the potential to live on water as well as on land.They are ...
Odostomia chordata is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their ... Rosenberg, G. (2012). Odostomia chordata. Accessed through: World Register of Marine Species at http://www.marinespecies.org/ ...
Chlanidota chordata is a species of sea snail, a marine gastropod mollusk in the family Buccinidae, the true whelks. Chlanidota ... chordata (Strebel, 1908). Retrieved through: World Register of Marine Species on 17 April 2010.. ...
Chordatakôrdā´tə, -dä´- [key], phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal ...
See C. K. Weichert, Anatomy of the Chordates (4th ed. 1970); R. M. Alexander, The Chordates (2d ed. 1981); H. Eugene Lehman, Chordate Development (2d ed.
Chordata (kôrdā´tə,-dä´-), phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal ... Chordata Animal Sciences COPYRIGHT 2002 The Gale Group Inc.. Chordata. Human beings are chordates-of the phylum chordata-and so ... Chordata Biology COPYRIGHT 2002 The Gale Group Inc.. Chordata. Chordata is a large and diverse group of animals, with roughly ... Chordata A phylum of animals characterized by a hollow dorsal nerve cord and, at some stage in their development, a flexible ...
Animal Diversity Web: Chordata *Introduction to the Chordate. UCMP Berkeley. Title Illustrations. Click on an image to view ... Chordata John G. Lundberg Click on an image to view larger version & data in a new window ... Page: Tree of Life Chordata. Authored by John G. Lundberg. The TEXT of this page is licensed under the Creative Commons ... The Phylum Chordata includes the well-known vertebrates (fishes, amphibians, reptiles, birds, mammals). The vertebrates and ...
Media in category "Chordata". The following 21 files are in this category, out of 21 total. ... Retrieved from "https://commons.wikimedia.org/w/index.php?title=Category:Chordata&oldid=258634649" ...
Chordata: Life History and Ecology. While the chordata share many developmental features, their life histories and ecology vary ...
Browse Tag: chordata non fish petromyzontida. Sea Lamprey (aka Lamprey Eel) - Drow_male @ Wik... ...
Category Archives: Chordata. One of the least populated phyla in the animal kingdom, chordata is the phylum best represented on ... Posted in Animalia, Asia, Chordata, Domestic, Land, Mammalia, Muridae, Rattus, Rodentia Gray Wolf. Posted on May 29, 2012. by ... Posted in Animalia, Chordata, Elephantidae, Elephas, Land, Mammalia, Proboscidea, Zoo Barn Swallow. Posted on May 29, 2012. by ... Posted in Air, Animalia, Chiroptera, Chordata, Mammalia, North America, Wild Mallard Duck. Posted on May 29, 2012. by Rachel ...
"Chordata" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH (Medical Subject Headings ... This graph shows the total number of publications written about "Chordata" by people in Harvard Catalyst Profiles by year, and ... Below are the most recent publications written about "Chordata" by people in Profiles. ... whether "Chordata" was a major or minor topic of these publication.. To see the data from this visualization as text, click ...
Members of the phylum Chordata have three main germ cell layers, each with its own unique role in development. In this lesson, ... Introduction to Embryology in Chordata. The phylum Chordata encompasses all living and extinct chordates. We, as humans, are ... All of us are united within the phylum Chordata by the ways in which our germ layer cells differentiate into specific tissues ... Members of the phylum Chordata have three main germ cell layers, each with its own unique role in development. In this lesson, ...
Online Complete study material for Medical Entrance, Biology, Chemistry, Zoology, Botany covers Cell theory, Evolution, Genetics, Homeostasis, Energy, Structural, Physiological, Evolutionary, Systematic, Ecology, Cell Theory, Energy, Homeostasis, Genetics,UG Medical Entrance (NEET)
Tag: Chordata. Photo Of The Day - Mobula Rays In Formation. Posted on April 23, 2014. by Peter West Carey ... Michael the Archangel, Chordata, Christian, church, cross, eagle, Falco leucocephalus, freedom, H. l. washingtoniensis, ... Chordata, clouds, fall, fog, gyag, Heritage, himalaya, himalayas, Historical, history, holiday, holidays, horns, ice, kangtega ... Chordata, Delphinidae, dolphin, dolphins, dorsal, dorsal fin, fin, Gervais, Hawaii, holiday, holidays, island, leap, leaping, ...
Ang Phylum Chordata ay isang grupo ng mga hayop na binubuo ng lahat ng mga bertebrado at mga malalapit na imbertebrado. Sila ay ... Ang Chordata ay isang Kalapian.. *Ang mga posisyon (relasyon) ng mga clade ng Cephalochordata, Tunicate, at Craniata clades ay ... Ang kalapian ng Chordata ay binubuo ng tatlong sublapi: Urochordata, Cephalochordata, at Craniata), kung saan napapabilang ang ... Kinuha mula sa "https://tl.wikipedia.org/w/index.php?title=Chordata&oldid=1730185" ...
Index of /Fossil_Galleries/Phylum_Chordata_Fossils/Class_Chondrichthyes_Fossils/Megalodon. Name Last modified Size Description ...
... phylum Chordata explanation free. What is phylum Chordata? Meaning of phylum Chordata medical term. What does phylum Chordata ... Looking for online definition of phylum Chordata in the Medical Dictionary? ... An animal of the phylum Chordata. chordate. *any animal of the phylum Chordata, characterized by the presence of a notochord, ... redirected from phylum Chordata). Also found in: Dictionary, Thesaurus, Encyclopedia. chordate. [kor´dāt] 1. an animal of the ...
Information about the animals in the Phylum Chordata, which includes the vertebrates and animals that have a notochord at some ... While animals like humans, mammals and birds are all vertebrates in the Phylum Chordata, not all animals in the Phylum Chordata ... The Phylum Chordata contains some of the most familiar animals in the world, including humans. What sets them apart is that ... Animals in the Phylum Chordata may not all have a spine (some do, which would classify them as a vertebrate animal), but they ...
Find out information about Chordata, nonvertebrate. any animal of the phylum Chordata, including the vertebrates and ... protochordates, characterized by a notochord, dorsal tubular nerve cord, and pharyngeal... Explanation of Chordata, ... redirected from Chordata, nonvertebrate). Also found in: Dictionary, Thesaurus, Medical. chordate. any animal of the phylum ... Chordata, nonvertebrate , Article about Chordata, nonvertebrate by The Free Dictionary https://encyclopedia2.thefreedictionary. ...
Deuterostome Review: Which two groups comprise the Deuterostomes? Echinodermata, Chordata Do Echinoderm adults have radial, ... 1 Which two groups comprise the Deuterostomes? Deuterostome Review: Echinodermata, Chordata Do Echinoderm adults have radial, ...
Phylum Chordata - Advanced. Includes: Tunicates, Lancelets, and Vertebrates (which include Fish, Amphibians, Reptiles, Birds ...
An investigation of the genus Mesacanthus (Chordata: Acanthodii) from the Orcadian Basin and Midland Valley areas of Northern ... An investigation of the genus Mesacanthus (Chordata: Acanthodii) from the Orcadian Basin and Midland Valley areas of Northern ... An investigation of the genus Mesacanthus (Chordata: Acanthodii) from the Orcadian Basin and Midland Valley areas of Northern ...
CliffsNotes study guides are written by real teachers and professors, so no matter what youre studying, CliffsNotes can ease your homework headaches and help you score high on exams. ...
Chordata[edit]. The CNS of chordates differs from that of other animals in being placed dorsally in the body, above the gut and ...
Chordata. The phylum Chordata contains all animals that possess, at some time in their life cycles, a stiffening rod (the ...
Phylum Chordata chordates Chordata: information (1) Chordata: pictures (15057) Chordata: specimens (6829) Chordata: sounds (709 ...
Phylum Chordata. The phylum Chordata is separated into three subgroups (or subphyla). The invertebrate subphylum Tunicata ... primarily Arthropoda and Chordata). Similarly, the peptide and steroid hormones found in vertebrates are also present in the ... all nonvertebrate members of the phylum Chordata). The ability of many invertebrates to concentrate iodide, an important ... discussion summarizes the endocrine systems of five invertebrate phyla and the two invertebrate subphyla of the phylum Chordata ...
  • The phylum "chordata" is found in the animal kingdom. (wikibooks.org)
  • upbeat music) The phylum Chordata accounts for all 52,000 species of vertebrates on Earth, and several thousand species of invertebrates. (khanacademy.org)
  • The common name for members of "chordata" is vertebrates, and those that do not belong to the phylum but are within the animal kingdom are known as invertebrates. (wikibooks.org)
  • Within "chordata" there are five classes of animals. (wikibooks.org)
  • Chordata kôrdā´tə, -dä´- [ key ] , phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. (infoplease.com)
  • One of the least populated phyla in the animal kingdom, chordata is the phylum best represented on the eBestiary. (evergreen.edu)
  • Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Artidactyla Family: Camelidae Genus: Vicugna Species: Vicugna pacos Alpaca (Vicugna Pacos) Studied by: Rebecca Littleton Introduction When I moved into my new home in November 2011, I noticed a creature across the street from my house watching me. (evergreen.edu)
  • Neofelis Nebulosa Wikipedia Page Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Carnivora Family: Felidae Genus: Neofelis Species: Nebulosa Region: Southeast Asia (detailed areas found under Natural History) INTRODUCTION The animal I have chosen is the clouded leopard, or neofelis nebulosa. (evergreen.edu)
  • Phylum in the domain Eukarya, comprised of animals either with fully developed backbones (VERTEBRATES), or those with notochords only during some developmental stage (CHORDATA, NONVERTEBRATE). (harvard.edu)
  • Members of the phylum Chordata have three main germ cell layers, each with its own unique role in development. (study.com)
  • To best understand how germ layers contribute to the growth and development of a chordate , or an animal possessing a specialized cartilage rod called a notochord, we will first need to take a look at the basics of embryology in the phylum Chordata . (study.com)
  • The phylum Chordata encompasses all living and extinct chordates. (study.com)
  • All of us are united within the phylum Chordata by the ways in which our germ layer cells differentiate into specific tissues and organs. (study.com)
  • What does phylum chordata mean? (definitions.net)
  • Here are all the possible meanings and translations of the word phylum chordata . (definitions.net)
  • Are we missing a good definition for phylum chordata ? (definitions.net)
  • What rhymes with phylum chordata ? (definitions.net)
  • Ang Phylum Chordata ay isang grupo ng mga hayop na binubuo ng lahat ng mga bertebrado at mga malalapit na imbertebrado . (wikipedia.org)
  • An animal of the phylum Chordata. (thefreedictionary.com)
  • Any of numerous animals of the phylum Chordata, having at some stage of development a dorsal nerve cord, a notochord, and gill slits and including all vertebrates, the hagfishes, and certain marine animals such as the lancelets and the tunicates. (thefreedictionary.com)
  • any animal of the phylum Chordata, characterized by the presence of a notochord, hollow dorsal nerve cord and gill slits. (thefreedictionary.com)
  • The Phylum Chordata contains some of the most familiar animals in the world, including humans. (thoughtco.com)
  • You might be surprised by some other animals in this phylum, as they are very different from humans, birds, fish and the fuzzy animals that we usually think of when we think of the Phylum Chordata. (thoughtco.com)
  • Animals in the Phylum Chordata may not all have a spine (some do, which would classify them as a vertebrate animal), but they all have a notochord . (thoughtco.com)
  • While animals like humans, mammals and birds are all vertebrates in the Phylum Chordata, not all animals in the Phylum Chordata are vertebrates. (thoughtco.com)
  • The Phylum Chordata contains three Subphyla. (thoughtco.com)
  • The phylum "chordata" is found in the animal kingdom. (wikibooks.org)
  • The common name for members of "chordata" is vertebrates, and those that do not belong to the phylum but are within the animal kingdom are known as invertebrates. (wikibooks.org)
  • phylum Chordata ) are a group of animals that includes the vertebrates , together with several closely related invertebrates . (mcgill.ca)
  • Phylum Chordata includes the vertebrates. (udel.edu)
  • What are the three subphyla of the phylum Chordata? (reference.com)
  • The Chordata phylum is the phylum which we are the most physically familiar with, as we ourselves are Chordata. (google.com)
  • Passerines (phylum Chordata, subphylum Vertebrata, superclass Tetrapoda, class Aves, order Passeriformes), sometimes called perching birds, are birds adapted to hold on to a perch tightly, even when they are asleep. (blogspot.com)
  • The Chordata includes those animals in which the body has a notochord, a stiffening rod of cartilage running through the dorsum, during at least part of the life cycle (in vertebrates, this is replaced by the spine during embryonic development). (fieldofscience.com)
  • Chordates (Chordata) are a group of animals that includes vertebrates, tunicates, lancelets. (thoughtco.com)
  • Chordata Mammalia are vertebrates. (wikispaces.com)
  • 2006). Modern molecular phylogenies support a basal position within the Chordata for the Cephalochordata, lancelets: small, superficially fish-like marine animals that primarily live buried in sand with the head exposed for filter-feeding. (fieldofscience.com)
  • In addition to the review of the human proteome, other mammalian and non-mammalian chordata proteins are increasingly being manually annotated with special emphasis on species such as Xenopus laevis , Xenopus tropicalis and Danio rerio (Zebrafish) which are important model organisms for studying embryonic development and cell biology. (uniprot.org)
  • Mollusks, Crustaceans, and Nematodes make up most of all organisms, while Chordata, both the skeletal structure and the phyla that we are put in as humans take up a small fraction of organisms, in comparison. (google.com)
  • Yet all these species fall into one of the three phyla: Cnidaria or Chordata or Arthropoda. (news-medical.net)
  • Odostomia chordata is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies. (wikipedia.org)
  • Chlanidota chordata is a species of sea snail, a marine gastropod mollusk in the family Buccinidae, the true whelks. (wikipedia.org)
  • While the chordata share many developmental features, their life histories and ecology vary greatly. (berkeley.edu)
  • Eschmeyer , W. N . Genera of Recent Fishes (en anglès). (wikipedia.org)
  • Nelson , Joseph S. Fishes of the World (en anglès). (wikipedia.org)
  • Lepilemur es un género de mamíferos lémur pertenecientes a la familia Lepilemuridae , conocidos en inglés como sportive lemurs y en castellano como lémures saltadores . (wikipedia.org)
  • Of the approximately 35 phyla in the kingdom Animalia, only one phylum-the phylum Chordata-contains animals that have backbones. (hawaii.edu)
  • To save myself a lot of time (assuming the song writer hasn't simply told me the chord progression) I make use of the following free tool called Chordata . (virtualplaying.com)