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Glypheidea
Glypheidea is an infraorder of lobster-like decapod crustaceans, comprising a number of fossil forms and the two extant Extant is the opposite of the word extinct. It may refer to: * Extant hereditary titles * Extant literature, surviving literature, such as ''Beowulf'', the oldest extant manuscript written in English * Extant taxon, a taxon which is not extinct, ... (living) genera ''Neoglyphea'' and ''Laurentaeglyphea'': The infraorder was thought to be extinct until a living species, ''Neoglyphea inopinata'', was discovered in 1975. They are now considered "living fossils", with over 256 fossil species discovered, and just two extant species. Phylogeny Glypheidea belongs to the clade Reptantia within the order (biology), order Decapoda, although its exact placement within Reptantia is difficult to determine. Some phylogenetic studies consider Glypheidea to be most closely related to the infraorder Astacidea, which consists of the lobsters and crayfish, whereas other studie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laurentaeglyphea
''Laurentaeglyphea neocaledonica'' is a species of glypheoid lobster, and the only species in the genus ''Laurentaeglyphea''. It is known from a single specimen collected on a guyot in the Coral Sea between Australia and New Caledonia. It is thought to be an active predator with colour vision, unlike its nearest living relative, ''Neoglyphea inopinata''. Description ''Laurentaeglyphea'' is known from a single adult female specimen, with a carapace in size. In life, the animal is whitish and marked with red patches, especially on the abdomen and the distal segments of the first pereiopods; the markings are much fainter on the carapace. ''Laurantaeglyphea'' has large reniform (kidney-shaped) eyes, more developed in the lower half than the upper. The epistome, behind the two pairs of antennae on the ventral side, is large, but considerably shorter than that of ''Neoglyphea''. ''Laurantaeglyphea'' has five pairs of pereiopods, all without true chelae (claws). Distribution The si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neoglyphea
''Neoglyphea inopinata'' is a species of glypheoid lobster, a group thought long extinct before ''Neoglyphea'' was discovered. It is a lobster-like animal, up to around in length, although without claws. It is only known from 17 specimens, caught at two sites – one at the entrance to Manila Bay in the Philippines, and one in the Timor Sea, north of Australia. Due to the small number of specimens available, little is known about the species, but it appears to live up to five years, with a short larval phase. A second species, previously included in ''Neoglyphea'', is now placed in a separate genus, ''Laurentaeglyphea''. Taxonomy ''Neoglyphea inopinata'' was named in 1975 by Jacques Forest and Michèle de Saint Laurent of the ' in Paris. It was based on a single damaged specimen that had been caught by the USFC ''Albatross'' in the Philippines in 1908, and deposited in the United States National Museum. De Saint Laurent examined the unidentified specimen while working on Thala ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neoglyphea Inopinata
''Neoglyphea inopinata'' is a species of glypheoid lobster, a group thought long extinct before ''Neoglyphea'' was discovered. It is a lobster-like animal, up to around in length, although without claws. It is only known from 17 specimens, caught at two sites – one at the entrance to Manila Bay in the Philippines, and one in the Timor Sea, north of Australia. Due to the small number of specimens available, little is known about the species, but it appears to live up to five years, with a short larval phase. A second species, previously included in ''Neoglyphea'', is now placed in a separate genus, ''Laurentaeglyphea''. Taxonomy ''Neoglyphea inopinata'' was named in 1975 by Jacques Forest and Michèle de Saint Laurent of the ' in Paris. It was based on a single damaged specimen that had been caught by the USFC ''Albatross'' in the Philippines in 1908, and deposited in the United States National Museum. De Saint Laurent examined the unidentified specimen while working on Thala ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astacidea
Astacidea is an infraorder of decapod crustaceans including lobsters (though not "lobsters" such as the spiny lobster etc.), crayfish, and their close relatives. Description The Astacidea are distinguished from most other decapods by the presence of chelae (claws) on each of the first three pairs of pereiopods (walking legs), the first of which is much larger than the remaining two pairs. The last two pairs of pereiopods are simple (without claws), except in ''Thaumastocheles'', where the fifth pereiopod may have "a minute pincer". Distribution Members of the infraorder Astacidea are found throughout the world – both in the oceans and in fresh water – except for mainland Africa and parts of Asia. Classification Astacidea belongs to the group Reptantia, which consists of the walking/crawling decapods (lobsters and crabs). Astacidea is the sister clade to the infraorder Polychelida, a small group of crustaceans restricted to deep waters. The cladogram below shows Astacidea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reptantia
Reptantia is a clade of decapod crustaceans named in 1880 which includes lobsters, crabs and many other well-known crustaceans. Classification In older classifications, Reptantia was one of the two sub-orders of Decapoda alongside Natantia, with Reptantia containing the walking forms, and Natantia containing the swimming forms (prawns, shrimp and boxer shrimp). However, in 1963 Martin Burkenroad found Natantia to be paraphyletic and invalid, and instead split Decapoda into the two sub-orders of Dendrobranchiata (prawns) and Pleocyemata. Pleocyemata contains all the members of the Reptantia (including crabs, lobsters, crayfish, and others), as well as the Stenopodidea ("boxer shrimp"), and Caridea (true shrimp). Reptantia remains a valid monophyletic grouping, but is now no longer ranked as a sub-order. Anatomy The name Reptantia means "those that walk", and contains those decapods whose primary mode of locomotion is to walk along a surface using the pereiopods rather than swi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glypheoidea
The Glypheoidea (containing the glypheoid lobsters), is a group of lobster-like decapod crustaceans which forms an important part of fossil faunas, such as the Solnhofen limestone. These fossils included taxa such as ''Glyphea'' (from which the group takes its name), and ''Mecochirus'', mostly with elongated (often semichelate) chelipeds. This group of decapods is a good example of a living fossil, or a lazarus taxon, since until their discovery in the 1970s, the group was considered to have become extinct in the Eocene. The superfamily Glypheoidea comprises five families. The two extant species, ''Neoglyphea inopinata'' and ''Laurentaeglyphea neocaledonica'', are both in the Glypheidae. Prehistoric abundance The first animals attributable to the Glypheoidea appeared in the Permo-Triassic. They were abundant in the Jurassic, but declined from the Cretaceous to the Eocene. Extant taxa The Glypheoidea was originally considered to be a purely fossil group. That opinion had to be a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glypheidae
The Glypheoidea (containing the glypheoid lobsters), is a group of lobster-like decapod crustaceans which forms an important part of fossil faunas, such as the Solnhofen limestone. These fossils included taxa such as ''Glyphea'' (from which the group takes its name), and ''Mecochirus'', mostly with elongated (often semichelate) chelipeds. This group of decapods is a good example of a living fossil, or a lazarus taxon, since until their discovery in the 1970s, the group was considered to have become extinct in the Eocene. The superfamily Glypheoidea comprises five families. The two extant species, ''Neoglyphea inopinata'' and ''Laurentaeglyphea neocaledonica'', are both in the Glypheidae. Prehistoric abundance The first animals attributable to the Glypheoidea appeared in the Permo-Triassic. They were abundant in the Jurassic, but declined from the Cretaceous to the Eocene. Extant taxa The Glypheoidea was originally considered to be a purely fossil group. That opinion had to be a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glyphea
''Glyphea'' is a genus of fossil Glypheoidea, glypheoid crustaceans that lived from the Jurassic to the Eocene. It includes the following species: *''Glyphea alexandri'' Taylor, 1979 *''Glyphea arborinsularis'' Etheridge Jr., 1917 *''Glyphea australensis'' Feldmann, Tshudy & Thomson, 1993 *''Glyphea bathonica'' De Ferry, 1865 *''Glyphea bohemica'' Fritsch, 1887 *''Glyphea calloviensis'' H. Woods, 1927 *''Glyphea carteri'' Bell, 1863 *''Glyphea christeyi'' Feldmann & Maxwell, 1999 *''Glyphea crassa'' Oppel, 1861 *''Glyphea cretacea'' McCoy, 1854 *''Glyphea foresti'' Feldmann & de Saint Laurent, 2002 *''Glyphea georgianus'' Taylor, 1979 *''Glyphea gussmanni'' Schütze, 1907 *''Glyphea jeletzkyi'' Feldmann & McPherson, 1980 *''Glyphea liasina'' Von Meyer, 1840 *''Glyphea lyrica'' Blake, 1876 *''Glyphea muensteri'' (Voltz, 1835) *''Glyphea oculata'' J. Woods, 1957 *''Glyphea prestwichi'' H. Woods, 1929 *''Glyphea pseudastacus'' *''Glyphea pseudoscyllarus'' (Schlotheim, 1822) *''Glyp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crayfish
Crayfish are freshwater crustaceans belonging to the clade Astacidea, which also contains lobsters. In some locations, they are also known as crawfish, craydids, crawdaddies, crawdads, freshwater lobsters, mountain lobsters, rock lobsters, mudbugs, baybugs or yabbies. Taxonomically, they are members of the superfamilies Astacoidea and Parastacoidea. They breathe through feather-like gills. Some species are found in brooks and streams, where fresh water is running, while others thrive in swamps, ditches, and paddy fields. Most crayfish cannot tolerate polluted water, although some species, such as ''Procambarus clarkii'', are hardier. Crayfish feed on animals and plants, either living or decomposing, and detritus. The term "crayfish" is applied to saltwater species in some countries. Terminology The name "crayfish" comes from the Old French word ' (Modern French '). The word has been modified to "crayfish" by association with "fish" (folk etymology). The largely American ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mecochirus Longimanatus
''Mecochirus longimanatus'' is an extinct species of lobster-like decapod crustacean from the Jurassic of Europe. The Maxberg Specimen of ''Archaeopteryx ''Archaeopteryx'' (; ), sometimes referred to by its German name, "" ( ''Primeval Bird''), is a genus of bird-like dinosaurs. The name derives from the ancient Greek (''archaīos''), meaning "ancient", and (''ptéryx''), meaning "feather" ...'' was initially assigned to ''Mechocirus longimanatus'' before it was realised that it belonged to ''Archaeopteryx lithographica''. References External links * Glypheidea Jurassic crustaceans Prehistoric animals of Europe Jurassic animals of Europe Crustaceans described in 1822 {{decapod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erymoidea
Erymidae is a family of decapod crustaceans known only from fossils. They survived for 100 million years, from the Permo-Triassic boundary to the Albian. Eleven genera are recognised: *'' Clytiella'' Glaessner, 1931 – 1 species *'' Clytiopsis'' Bill, 1914 – 3 species *'' Enoploclytia'' M’Coy, 1849 – 20 species *''Eryma ''Eryma'' is a genus of fossil lobster-like crustacean Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, co ...'' Von Meyer, 1840 – 44 species *'' Galicia'' Garassino & Krobicki, 2002 – 3 species *'' Lissocardia'' Von Meyer, 1851 – 3 species *'' Palaeastacus'' Bell, 1850 – 24 species *'' Paraclytiopsis'' Oravec, 1962 – 1 species *'' Protoclytiopsis'' Birshtein, 1958 – 1 species *'' Pustulina'' Quenstedt, 1857 – 12 species *'' Stenodactylina'' Beurlen, 1928 – 1 species References Glypheidea Pre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decapoda
The Decapoda or decapods (literally "ten-footed") are an order of crustaceans within the class Malacostraca, including many familiar groups, such as crabs, lobsters, crayfish, shrimp and prawns. Most decapods are scavengers. The order is estimated to contain nearly 15,000 species in around 2,700 genera, with around 3,300 fossil species. Nearly half of these species are crabs, with the shrimp (about 3,000 species) and Anomura including hermit crabs, porcelain crabs, squat lobsters (about 2500 species) making up the bulk of the remainder. The earliest fossil decapod is the Devonian ''Palaeopalaemon''. Anatomy Decapods can have as many as 38 appendages, arranged in one pair per body segment. As the name Decapoda (from the Greek , ', "ten", and , '' -pod'', "foot") implies, ten of these appendages are considered legs. They are the pereiopods, found on the last five thoracic segments. In many decapods, one pair of these "legs" has enlarged pincers, called chelae, with the legs be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
