Loading...
  • species
  • The earliest Paleogene fauna of any diversity, over 30 species, including some near complete, some preserved in 3-D, and some excellent bird-fossils (even with feathers and chromatine). (wikipedia.org)
  • Finally, opsin sequences and spectral sensitivity data from species within the Mysidae and Decapoda were combined with previously characterized invertebrate sequences to investigate opsin evolution. (byu.edu)
  • There are at least 30 species of crustaceans found in Montana. (wikipedia.org)
  • The Montana Department of Fish, Wildlife and Parks has identified a number of crustacean species as Species of Concern. (wikipedia.org)
  • Spiny lobsters, also known as langustas, langouste, or rock lobsters, are a family (Palinuridae) of about 60 species of achelate crustaceans, in the Decapoda Reptantia. (wikipedia.org)
  • 2018). A redescription of the fossil water strider species Aquarius lunpolaensis based on new specimens from the Lunpola and Nima basins of central Tibet will be published by Cai et al. (wikipedia.org)
  • Revising the definition of the crustacean seta and setal classification systems based on examinations of the mouthpart setae of seven species of decapods" (PDF). (wikipedia.org)
  • With more than four million species, arthropods are the largest and most diverse group of animals on the planet and include, for example, crustaceans, insects and spiders. (elifesciences.org)
  • Exactly how this ancestral arthropod gave rise to the myriad species that exist today is unclear but we know that at some point the arthropod family tree split into branches, one of which went on to become the crustaceans. (elifesciences.org)
  • In most neopteran insects (those insects possessing wings that bend over the abdomen), parallel fibers provide systems of dendrites that form a distal cap- or cup-like domain called the calyx that receives afferents from olfactory neuropils and, in many species, from the optic lobes and gustatory centers as well. (elifesciences.org)
  • Anker A (2010) Metabetaeus Borradaile, 1899 revisited, with description of a new marine species from French Polynesia (Crustacea: Decapoda: Alpheidae). (springer.com)
  • Fossil crabs assigned to the species "Potamon antiquum" have been discovered in sediments of Pliocene-Pleistocene age in northern Hungary. (wikipedia.org)
  • Crustacean , any member of the subphylum Crustacea (phylum Arthropoda), a group of invertebrate animals consisting of some 45,000 species distributed worldwide. (britannica.com)
  • The largest crustaceans belong to the Decapoda , a large order (about 10,000 species) that includes the American lobster , which can reach a weight of 20 kilograms (44 pounds), and the giant Japanese spider crab , which has legs that can span up to 3.7 metres (12 feet). (britannica.com)
  • The crustaceans of most obvious importance to humans are the larger species, chiefly decapods. (britannica.com)
  • Disarticulated exoskeletons of the phacopids belonging to the species Omegops cornelius preserved within a nautiloid conch are described from the Devonian Hongguleleng Formation (China) by Zong, Fan & Gong (2016), who interpret the fossils as indicating that the trilobites had moulted within the living chamber of a dead nautiloid. (wikipedia.org)
  • This is a perplexing problem, since our current state of knowledge does-not allow species-level identification of over half of the immature nymphs or larvae of important aquatic insect orders. (sportdocbox.com)
  • There is enormous variation in body structure amongst insect species. (wikipedia.org)
  • Although the general function of the three body regions is the same across all insect species, there are major differences in basic structure, with wings, legs, antennae, and mouthparts being highly variable from group to group. (wikipedia.org)
  • Decapods (order Decapoda) are very important to human, as many species are edible and important in the fishing and aquaculature industry. (blogspot.co.nz)
  • Dinosaurs that are believed to have had gizzards based on the discovery of gizzard stones recovered near fossils include: Psittacosaurus Massospondylus Sellosaurus Omeisaurus Apatosaurus Barosaurus Dicraeosaurus Seismosaurus The belief that Claosaurus had a gizzard has been discredited on the grounds that the fossil remains this claim was based on were another species and the stones merely from a stream. (wikipedia.org)
  • shrimp
  • More than 10 million tons of crustaceans are produced by fishery or farming for human consumption, the majority of it being shrimp and prawns. (wikipedia.org)
  • nov., a heavily armoured mud shrimp from the Caribbean Sea, and taxonomic status of Espeleonaushonia Juarrero & Martínez-Iglesias, 1997 (Decapoda: Gebiidea: Laomediidae). (springer.com)
  • Early Cretaceous
  • A study of well-preserved kalligrammatid fossils from Middle Jurassic and Early Cretaceous sites in northeastern China, indicating that kalligrammatids convergently evolved some of the anatomical traits also present in butterflies, is published by Labandeira et al. (wikipedia.org)
  • diversity
  • Crustaceans exhibit an incredible diversity and abundance. (els.net)
  • Fossils of great diversity and unique preservation (only 10 my. (wikipedia.org)
  • This diversity includes many different examples of both simple and compound eyes, each with standard or uniquely crustacean features. (springer.com)
  • In this review, we focus on the anatomical variation, optical principles, and molecular diversity of crustacean compound eyes to illustrate how the complicated structures involved in vision are adapted for particular environments. (springer.com)
  • The wide range of light environments represented by these diverse habitats has operated together with the overall morphological diversity within the Crustacea to produce a dizzying array of crustacean visual systems, based on eyes ranging from simple pigment cups to compound eye designs not seen in any other animal. (springer.com)
  • shrimps
  • Earwig Unidentified Scorpion fly (Mecoptera) Early Eocene Fur Formation at Fur Museum, Denmark Hemiptera (Pentatomidae) Parasitic wasp Ypresiomyrma rebekkae holotype, in Stolleklint Clay, Early Eocene Fur Formation Mosquito (diptera) Mosquito (diptera) Lacewing (Neuroptera) Extraordinary cirripeds (barnacles), and the only fossil shrimps from Denmark. (wikipedia.org)
  • Here, using key identifiers to characterize neural arrangements, we demonstrate insect-like mushroom bodies in stomatopod crustaceans (mantis shrimps). (elifesciences.org)
  • More than any other crustacean taxon, mantis shrimps display sophisticated behaviors relating to predation, spatial memory, and visual recognition comparable to those of insects. (elifesciences.org)
  • now add a piece to the puzzle by showing that one group of modern-day crustaceans, the mantis shrimps, does in fact possess mushroom bodies. (elifesciences.org)
  • These cognitive demands, which might not be shared by other crustaceans, may have led to the mantis shrimps retaining their mushroom bodies. (elifesciences.org)
  • closely related
  • Using this knowledge as a starting point, and considering what is known of crustacean evolution overall, we present the most recent ideas of how crustacean compound eyes have evolved and show how eyes that are based on fundamentally different optical principles can in fact be derived from each other and thus be closely related through common descent. (springer.com)
  • taxa
  • This dissertation research is focused on expanding our knowledge of opsin evolution in invertebrate systems, particularly from non-insect taxa. (byu.edu)
  • marine
  • The studied ichnocoenose corresponds in fossil records to Skolithos-Taphrhelminthopsis-Ophiomorpha-Planolites-Thalassinoides association within shallow marine Psilonichnus ichnofacies to which Uca mud-mounds are new entrants diagnostic of palaeoshoreline, especially shallow coastal-mudflats at high-tide level. (palaeo-electronica.org)
  • Marine crustaceans are as ubiquitous in the oceans as insects are on land. (wikipedia.org)
  • At the time of its discovery, Haumuriaegla was the only known fossil from the family and the only marine member. (wikipedia.org)
  • genus
  • Workers from the National Autonomous University of Mexico have named the fossil Palinurus palaecosi, and report that it is closest to members of the genus Palinurus currently living off the coasts of Africa. (wikipedia.org)
  • The earliest fossils that can be confidently ascribed to the genus Cancer are those of C. fujinaensis from the Japanese Miocene. (wikipedia.org)
  • Patagonia
  • A study on the recovery of insect herbivores after the Cretaceous-Paleogene extinction event as indicated by insect-feeding damage on fossil leaves from the Maastrichtian and Danian localities in Patagonia (Argentina) is published by Donovan et al. (wikipedia.org)
  • adult
  • The majority of crustaceans are also motile, moving about independently, although a few taxonomic units are parasitic and live attached to their hosts (including sea lice, fish lice, whale lice, tongue worms, and Cymothoa exigua, all of which may be referred to as "crustacean lice"), and adult barnacles live a sessile life - they are attached headfirst to the substrate and cannot move independently. (wikipedia.org)
  • anatomical
  • New anatomical data on the fossil beetle Onthophilus intermedius, obtained by using X-ray computed tomography, is published by Schwermann et al. (wikipedia.org)
  • While we recognize that our understanding of the evolution of Crustacea is far from complete, we believe that a discussion of eye design, from both anatomical and molecular perspectives, illustrates many key evolutionary principles. (springer.com)
  • burrows
  • The study provides firsthand criteria to recognize fossil burrows and mud-mounds of Uca and comparative analysis between U. marionis mud-volcanoes and U. lactea mud-mounds. (palaeo-electronica.org)
  • record
  • Fossil Record. (wikipedia.org)
  • The group has an extensive fossil record, reaching back to the Cambrian, and includes living fossils such as Triops cancriformis, which has existed apparently unchanged since the Triassic period. (wikipedia.org)
  • 2018). A study on the atmospheric oxygen levels through the Phanerozoic, evaluating whether Romer's gap and the concurrent gap in the fossil record of insects were caused by low oxygen levels, is published by Schachat et al. (wikipedia.org)
  • Formation
  • Bird fossil with preserved feathers from Fur, at the Geological Museum, Copenhagen Bird skeleton at Fur Museum, Denmark Bird (Charadriiformes) from the Fur Formation, Denmark. (wikipedia.org)
  • Bird head with preserved feathers from the Fur Formation, Denmark †Lithornithiformes Galliformes Gruiformes Rallidae †Messelornithidae Apodiformes (Swifts) Charadriiformes Psittaciformes Musophagiformes Coliiformes Strigiformes Caprimulgiformes Coraciiformes Trogoniformes Primoscenidae Several fossil sea turtles are known from the Fur Formation. (wikipedia.org)
  • 2018). An ellipsoidal chamber composed of a thin organic layer, interpreted as a likely insect cocoon or pupation chamber, is described from the Lower Cretaceous Jinju Formation (South Korea) by Lee (2018). (wikipedia.org)
  • arose
  • This suggests that mushroom bodies are evolutionarily ancient structures that arose in a common ancestor of insects and crustaceans, before being lost or radically modified in most of the crustaceans. (elifesciences.org)
  • While it seems certain that simple eyes arose independently several times in crustacean evolution, little is known about the evolutionary paths taken to produce the very unusual assortment of simple eye designs present in modern crustaceans. (springer.com)
  • Isopoda
  • Isopods (order Isopoda) probably have the most diverse appearance among the crustaceans, ranging from flattened and bug-like, to longish and worm-like. (blogspot.co.nz)
  • nauplius
  • Crustaceans share several derived features: the nauplius larva, two pairs of antennae and biramous ('two branched') second antennae. (els.net)
  • implications
  • Within this review, we highlight some of the typical and unusual eye designs within the Crustacea and discuss their evolutionary implications. (springer.com)
  • Species
  • It's a fairly large insect - some species had wingspans of over ten centimetres. (fieldofscience.com)
  • To test whether palinurans share a common ground plan of distal leg motor neurons with other decapod crustaceans, I examined the distal leg motor neurons in the scyllarid species Ibacus peronii and Ibacus alticrenatus . (blogspot.com)
  • The earliest Paleogene fauna of any diversity, over 30 species, including some near complete, some preserved in 3-D, and some excellent bird-fossils (even with feathers and chromatine). (wikipedia.org)
  • Spiny lobsters, also known as langustas, langouste, or rock lobsters, are a family (Palinuridae) of about 60 species of achelate crustaceans, in the Decapoda Reptantia. (wikipedia.org)
  • Disarticulated exoskeletons of the phacopids belonging to the species Omegops cornelius preserved within a nautiloid conch are described from the Devonian Hongguleleng Formation (China) by Zong, Fan & Gong (2016), who interpret the fossils as indicating that the trilobites had moulted within the living chamber of a dead nautiloid. (wikipedia.org)
  • 2018). A redescription of the fossil water strider species Aquarius lunpolaensis based on new specimens from the Lunpola and Nima basins of central Tibet will be published by Cai et al. (wikipedia.org)
  • Dinosaurs that are believed to have had gizzards based on the discovery of gizzard stones recovered near fossils include: Psittacosaurus Massospondylus Sellosaurus Omeisaurus Apatosaurus Barosaurus Dicraeosaurus Seismosaurus The belief that Claosaurus had a gizzard has been discredited on the grounds that the fossil remains this claim was based on were another species and the stones merely from a stream. (wikipedia.org)
  • There is enormous variation in body structure amongst insect species. (wikipedia.org)
  • Although the general function of the three body regions is the same across all insect species, there are major differences in basic structure, with wings, legs, antennae, and mouthparts being highly variable from group to group. (wikipedia.org)
  • Giant fossa (Cryptoprocta spelea): The fossil record of Madagascar has yielded the remains of a recently extinct fossa which was about a quarter larger than the living species, making it close to the size of an ocelot. (wikipedia.org)
  • The fossils of spines that are found are used to determine the family or genera of the fish but it cannot determine the species. (wikipedia.org)
  • Revising the definition of the crustacean seta and setal classification systems based on examinations of the mouthpart setae of seven species of decapods" (PDF). (wikipedia.org)
  • specimens
  • Gerarus is one of the most abundant of Carboniferous insects - specimens have been recovered from almost all major terrestrial deposits of this time, including localities such as Mazon Creek in Illinois and Commentry in France (Béthoux & Briggs, 2008). (fieldofscience.com)
  • Fossil specimens of O. quadrata have been found in rocks dating from the Pleistocene. (wikipedia.org)
  • A study on the plant specimens (ferns, gymnosperms and angiosperms) from the Lower Cretaceous Araripe Basin (Brazil) preserving evidence of plant-insect interactions and potentially of paleoecological relationships between plants and insects will be published by Edilson Bezerra dos Santos Filho et al. (wikipedia.org)
  • Genus
  • Workers from the National Autonomous University of Mexico have named the fossil Palinurus palaecosi, and report that it is closest to members of the genus Palinurus currently living off the coasts of Africa. (wikipedia.org)
  • No living Zaglossus have been seen in Australia, in recent years, and this genus may now be endemic to New Guinea, although a specimen in the natural history museum was collected from the Kimberley region in the early 20th century and fossils have been found in Australia. (wikipedia.org)
  • When zoological nomenclature was first standardised by Carl Linnaeus in the 1758 10th edition of Systema Naturae, the genus Cancer included almost all crustaceans, including all the crabs. (wikipedia.org)
  • barnacles
  • Earwig Unidentified Scorpion fly (Mecoptera) Early Eocene Fur Formation at Fur Museum, Denmark Hemiptera (Pentatomidae) Parasitic wasp Ypresiomyrma rebekkae holotype, in Stolleklint Clay, Early Eocene Fur Formation Mosquito (diptera) Mosquito (diptera) Lacewing (Neuroptera) Extraordinary cirripeds (barnacles), and the only fossil shrimps from Denmark. (wikipedia.org)
  • turtles
  • Bird head with preserved feathers from the Fur Formation, Denmark †Lithornithiformes Galliformes Gruiformes Rallidae †Messelornithidae Apodiformes (Swifts) Charadriiformes Psittaciformes Musophagiformes Coliiformes Strigiformes Caprimulgiformes Coraciiformes Trogoniformes Primoscenidae Several fossil sea turtles are known from the Fur Formation. (wikipedia.org)
  • limestone
  • The diatomite comprises 2/3 opal tests of diatoms and 1/3 clay, interbedded with layers of volcanic ash and a few limestone horizons ('cementstones'), and has exceptionally complete fossil preservation. (wikipedia.org)
  • evolution
  • The exoskeleton of the male genitalic region in Archaeognatha, with hypotheses on the early evolution and the morphological interpretation of genitalia in insects. (senckenberg.de)
  • arthropod
  • 2016). A study of the eye anatomy of the thylacocephalan (an arthropod of uncertain phylogenetic placement, possibly crustacean) Dollocaris is published by Vannier et al. (wikipedia.org)
  • known
  • The scientific study of crustaceans is known as carcinology (alternatively, malacostracology, crustaceology or crustalogy), and a scientist who works in carcinology is a carcinologist. (wikipedia.org)
  • group
  • The order Hymenoptera contains the largest group of eusocial insects, including ants, bees, and wasps-those with reproductive "queens" and more or less sterile "workers" and/or "soldiers" that perform specialized tasks. (wikipedia.org)
  • Study
  • Modern Approaches to the Study of Crustacea. (wikipedia.org)
  • A study of well-preserved kalligrammatid fossils from Middle Jurassic and Early Cretaceous sites in northeastern China, indicating that kalligrammatids convergently evolved some of the anatomical traits also present in butterflies, is published by Labandeira et al. (wikipedia.org)
  • Insect morphology is the study and description of the physical form of insects. (wikipedia.org)
  • anatomy
  • For many insects, this irreversibility has changed the anatomy of the worker caste, which is sterile and provides support for the reproductive caste. (wikipedia.org)
  • almost
  • These modifications allow insects to occupy almost every ecological niche on the planet, except the deep ocean and the Antarctic. (wikipedia.org)
  • body
  • The body of a crustacean is composed of segments, which are grouped into three regions: the cephalon or head, the thorax, and the pleon or abdomen. (wikipedia.org)
  • The crustacean body is protected by the hard exoskeleton, which must be moulted for the animal to grow. (wikipedia.org)
  • The insect body is divided into three parts: the head, thorax, and abdomen. (wikipedia.org)
  • The four principal regions of an insect body segment are: tergum or dorsal, sternum or ventral and the two pleura or laterals. (wikipedia.org)
  • hard
  • The head in most insects is enclosed in a hard, heavily sclerotized, exoskeletal head capsule, or epicranium. (wikipedia.org)
  • multiple
  • Crustaceans have provided multiple models for understanding the neural basis of rhythmic behaviour, such as tailflipping (Edwards et al. (blogspot.com)