Some authorities, however, have suggested a link with the phylum Platyhelminthes , a group of flatworms. (britannica.com)
Tapeworm, any member of the invertebrate class Cestoda (phylum Platyhelminthes), a group of parasitic flatworms containing about 5,000 species. (sunempirefoods.com)
The phylum Platyhelminthes (flatworms) is divided into three classes and a large number of orders and families. (lucidcentral.org)
Freshwater planaria, nonparasitic invertebrate animals belonging to the phylum Platyhelminthes, the flatworms, are organisms that are well-suited to educational purposes. (scienceinschool.org)
Key to Class and Order of Australian Aquatic Flatworms This key is apart of the Keys to Australian Aquatic Macro-Invertebrates. (lucidcentral.org)
Annelida1
Leech, (subclass Hirudinea), any of about 650 species of segmented worms (phylum Annelida) characterized by a small sucker, which contains the mouth, at the anterior end of the body and a large sucker. (sunempirefoods.com)
Arthropoda2
Arthropoda is the largest phylum in the animal kingdom, and includes both marine and terrestrial creatures like crabs, mites, spiders, centipedes and insects. (oceanconservancy.org)
Insect, (class Insecta or Hexapoda), any member of the largest class of the phylum Arthropoda, which is itself the largest of the animal phyla. (sunempirefoods.com)
Mollusca1
Mollusk, any soft-bodied invertebrate of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body. (sunempirefoods.com)
Jellyfish, any planktonic marine member of the class Scyphozoa (phylum Cnidaria), a group of invertebrate animals composed of about 200 described species, or of the class Cubozoa (approximately 20 species). (sunempirefoods.com)
Coral, any of a variety of invertebrate marine organisms of the class Anthozoa (phylum Cnidaria) that are characterized by skeletons-external or internal-of a stonelike, horny, or leathery consistency. (sunempirefoods.com)
Hemoglobins occur sporadically among the invertebrate phyla in no obvious [evolutionary branching] pattern. (icr.org)
It is hardly surprising, then, that we have so many gaps in the evolutionary history of life, gaps in such key areas as the origin of the multicellular organisms, the origin of vertebrates, not to mention the origins of most invertebrate groups. (answersingenesis.org)
Evolutionary relationships of animal phyla are based on DNA and molecular evidence due to the lack of fossil evidence of ancestral species. (answersingenesis.org)
Thorp and Covich's Freshwater Invertebrates: Keys to Palaearctic Fauna , Fourth Edition, is part of a multivolume series covering inland water invertebrates of the world that began with Volume 1: Ecology and General Biology (2015), then Volume 2: Keys to Nearctic Fauna (2016), and finally in Volume 3: Keys to Neotropical Hexapoda (2018) (insects and springtails). (nhbs.com)
Animals9
elow, I am compiling a list (with classification) of all the invertebrate animals known to occur in Lake Malawi. (malawicichlids.com)
The 3 rd Zoological Department primarily deals with invertebrate animals. (nhm-wien.ac.at)
The size, efficiency, and complexity of animals would not be farther than the simple invertebrates. (ubc.ca)
mesozoan , any of approximately 50 species of small, ciliated, multicellular animals that parasitize other marine invertebrates belonging to the phyla Rhombozoa and Orthonectida . (britannica.com)
Worm, any of various unrelated invertebrate animals that typically have soft, slender, elongated bodies. (sunempirefoods.com)
For example, in 1998, an estimated 11,800 marine animals were tagged electronically, and only 35 of these were invertebrates. (sciencelearn.org.nz)
My main interest is in the evolution of this phylum of colonial animals and I undertake research on their taxonomy, biomineralogy and palaeoecology. (nhm.ac.uk)
Species1
Here we profile the transcriptomes of over 220 invertebrate species sampled across nine animal phyla and report the discovery of 1,445 RNA viruses, including some that are sufficiently divergent to comprise new families. (nature.com)
Occur1
However, invertebrates known to occur in lakeside swamps ("dambos") are included, based on the documented regular occurrence in Lake Malawi proper of " floating islands " of vegetation from such swamps ( Oliver & McKaye, 1982) which likely transport these organisms into the open lake where they may temporarily survive. (malawicichlids.com)
Organisms1
Follow the links in the table of phyla to jump to each phylum's list of organisms. (malawicichlids.com)
Reptiles1
Faced with these intrinsic obstacles and with little evidence from the fossil record to help, it is hardly surprising that disagreement over the origin of chordates [a phylum containing amphioxus, fish, amphibians, reptiles, birds, and mammals] has been common. (icr.org)
Marine2
Ctenophores (phylum Ctenophora ), also known as comb jellies , are marine invertebrates that have eight rows of comb-like cilia on their transparent, gelatinous bodies. (newworldencyclopedia.org)
In: Marine Invertebrates of Southern Australia, Part III (Editors: S.A. Shepherd & M. Davies), Government Printer Adelaide, Australia. (marinespecies.org)
Creatures1
Invertebrates are extraordinarily varied creatures, united by only a single trait: They lack backbones. (nwf.org)
Reveals2
The invertebrate virome also reveals remarkable genomic flexibility that includes frequent recombination, lateral gene transfer among viruses and hosts, gene gain and loss, and complex genomic rearrangements. (nature.com)
Virome analysis of Amblyomma americanum, Dermacentor variabilis , and Ixodes scapularis ticks reveals novel highly divergent vertebrate and invertebrate viruses. (nature.com)
Animal1
The 3 rd Zoological Department houses collections encompassing all animal phyla. (nhm-wien.ac.at)
Diversity2
Figure 1: The frequency and diversity of viral RNA transcripts in invertebrate transcriptomes. (nature.com)
The appearance and diversity of these invertebrates cannot be explained on the basis of mutations accumulating and being selected for over time. (answersingenesis.org)
Keys2
It now continues with identification keys for Palearctic invertebrates in Volume 4. (nhbs.com)
Key to Phylum and Class of Australian Aquatic Invertebrates This is the central key in this series of linked Keys to Australian Aquatic Macro-Invertebrates. (lucidcentral.org)
Scientific2
To request a loan of Other Invertebrate Phyla or a scientific visit to these collections, please complete the form below. (amnh.org)
Scientific researchers supplied patient explanations, and I began to find the lives of the invertebrates compelling. (nwf.org)
Class1
The key is designed to identify any specimen to a level corresponding approximately to Phylum or Class. (lucidcentral.org)
Groups2
Taxonomists have since replaced this single phylum with the phlya Rhombozoa and Orthonectida because of substantial morphological and life history differences between the two groups. (britannica.com)
For most major invertebrate groups this key points directly to a family-level subkey. (lucidcentral.org)
Identification1
We're here to give some credit to these underrecognized and underappreciated critters with a crash course in invertebrate identification. (oceanconservancy.org)
Range1
Ocean invertebrates range from microscopic zooplankton to the massive giant squid (which can reach almost 60 feet in length! (oceanconservancy.org)
Presence2
The presence of cannabinoid receptors in invertebrates has been controversial, due to conflicting evidence. (researchgate.net)
The presence of many invertebrates that are "living fossils" casts doubt on the way that evolution has occurred. (answersingenesis.org)
Review1
Introductory papers review some of the current biological concepts of the phylum. (nhbs.com)
Book1
This work was occasioned in part by a book I had undertaken about invertebrates. (nwf.org)
Development1
Two other volumes currently in development focus on general invertebrates of the Neotropical/Antarctic, and Australasian Bioregions. (nhbs.com)