• 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)
  • 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)
  • 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)
  • 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)
  • 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)
  • 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)
  • 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)
  • crayfish
  • Although Marmorkrebs have a fairly long generation time and only a "primitive" crustacean has had its genome sequenced , marbled crayfish are easily kept and reared and have a number of other reasons in their favor as a useful model organism. (blogspot.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)
  • limbs
  • Shubin N, Tabin CJ and Carroll SB (1997) Fossils, genes, and the evolution of animal limbs. (els.net)
  • 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)
  • 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)
  • morphological
  • No previously described crustacean possesses a mushroom body as defined by strict morphological criteria although crustacean centers called hemiellipsoid bodies, which serve functions in sensory integration, have been viewed as evolutionarily convergent with mushroom bodies. (elifesciences.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)
  • 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)
  • 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)
  • 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)
  • The fossil record of spiny lobsters has been extended by the discovery in 1995 of a 110-million-year-old fossil near El Espiñal in Chiapas, Mexico. (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)
  • 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)
  • ecological
  • These modifications allow insects to occupy almost every ecological niche on the planet, except the deep ocean and the Antarctic. (wikipedia.org)
  • specimens
  • 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)
  • Fossil specimens of O. quadrata have been found in rocks dating from the Pleistocene. (wikipedia.org)