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Nebaliidae
Nebaliidae is the largest of the three families of leptostracan crustacean Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group can ...s, containing 33 of the 40 described species. Its members may be distinguished from members of the other two families by the tapering form of the caudal furcae (which is broader in Nebaliopsididae), and by the callynophores of the antennae in mature males, which are swollen in Paranebaliidae but not in Nebaliidae. References External links * * Leptostraca Crustacean families Taxa named by George Samouelle {{Malacostraca-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptostraca
Leptostraca (from the Greek words for ''thin'' and ''shell'') is an order of small, marine crustaceans. Its members, including the well-studied ''Nebalia'', occur throughout the world's oceans and are usually considered to be filter-feeders. It is the only extant order in the subclass Phyllocarida. They are believed to represent the most primitive members of their class, the Malacostraca, and first appear in the fossil record during the Cambrian period. Description Leptostracans are usually small, typically long, crustaceans distinguished from all other members of their class in having seven abdominal segments, instead of six. Their head has stalked compound eyes, two pairs of antennae (one biramous, one uniramous), and a pair of mandibles but no maxillipeds. The carapace is large and comprises two valves which cover the head and the thorax, including most of the thoracic appendages, and serves as a brood pouch for the developing embryos. The first six abdominal segments bea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leptostraca
Leptostraca (from the Greek words for ''thin'' and ''shell'') is an order of small, marine crustaceans. Its members, including the well-studied ''Nebalia'', occur throughout the world's oceans and are usually considered to be filter-feeders. It is the only extant order in the subclass Phyllocarida. They are believed to represent the most primitive members of their class, the Malacostraca, and first appear in the fossil record during the Cambrian period. Description Leptostracans are usually small, typically long, crustaceans distinguished from all other members of their class in having seven abdominal segments, instead of six. Their head has stalked compound eyes, two pairs of antennae (one biramous, one uniramous), and a pair of mandibles but no maxillipeds. The carapace is large and comprises two valves which cover the head and the thorax, including most of the thoracic appendages, and serves as a brood pouch for the developing embryos. The first six abdominal segments bea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nebaliella
''Nebaliella'' is a genus of Leptostracan crustaceans within the family Nebaliidae Nebaliidae is the largest of the three families of leptostracan crustacean Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopod .... There are currently 7 species assigned to the genus. Species * '' Nebaliella antarctica'' * '' Nebaliella brevicarinata'' * '' Nebaliella caboti'' * '' Nebaliella declivatas'' * '' Nebaliella extrema'' * '' Nebaliella kurila'' * '' Nebaliella ochotica'' References {{Taxonbar, from=Q10595296 Leptostraca Malacostraca genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dahlella
''Dahlella caldariensis'' is a species of leptostracan crustacean which lives on hydrothermal vents in the Pacific Ocean. Description ''Dahlella'' may reach a length of from the base of the rostrum to the end of the abdomen. Much of the animal is covered by a large, hinged carapace. ''Dahlella'' can be distinguished from other animals in the same family by the presence of a row of denticles (small teeth) on the eyestalks, which it is believed are used to scrape surfaces for food. A similar character is found in '' Paranebalia'' (Paranebaliidae), but the form of the eyestalk is very different in the two taxa. Distribution ''D. caldariensis'' has been recorded from a small number of sites around hydrothermal vents in the eastern Pacific Ocean near the Galápagos Islands and on the East Pacific Rise. It is one of the deepest-living species of Leptostraca, having been found at depths of over . Etymology The generic name ''Dahlella'' commemorates the biologist Erik Dahl o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nebalia Bipes
''Nebalia bipes'' is a species of leptostracan crustacean, and the first species in the order to have been described (in 1780, under the name ''Cancer bipes''). It lives in coastal waters at depths of , under stones or among decaying organic matter where it is common and sometimes abundant.John Barrett and C M Young, Collins Pocket Guide to the Sea Shore (1958) p.93 Its predators include the fish '' Merlangius merlangus'' (whiting). Description ''N. bipes'' is orange or yellowish green and about one centimetre long. It has a loosely attached thin shell composed of two halves joined longitudinally which protect most of the segments. The upper pair of antennae are stumpy and branched while the lower pair are much longer, especially in the male where they can be as long as the body. The eyes are red and on stalks and there is a rostral spine projecting forward between them. There are eight pairs of appendages concealed under the shell and four longer pairs of abdominal appendages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Samouelle
George Samouelle (–1846) was a curator in the British Museum (Natural History) of "no real scientific aptitude". Originally employed as a bookseller for Longman & Co., Samouelle joined the Natural History Museum at the same time as William Elford Leach. Leach appears to have aided Samouelle greatly, with Bate & Westwood stating "Dr. Leach is the principal authority for Samouelle's work"; when Leach left the museum, Samouelle took over his position, but he "seemed incapable of independent work". Twenty years later, in 1840, after neglecting his work, drinking, insulting his superiors, and on one occasion, removing the labels from Adam White's specimens, Samouelle was sacked. He died less than five years later. Samouelle was primarily interested in Lepidoptera but also wrote ''A nomenclature of British Entomology, or a catalogue of above 4000 species of the Classes Crustacea, Myriapoda, Spiders, Mites and insects intended as labels for cabinets of Insects, etc., alphabetically a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nebalia
''Nebalia'' is a large genus of small crustaceans containing more than half of the species in the order Leptostraca, and was first described by William Elford Leach in 1814. The genus contains over thirty species: *'' Nebalia abyssicola'' Ledoyer, 1997 *'' Nebalia antarctica'' Dahl, 1990 *'' Nebalia biarticulata'' Ledoyer, 1997 *''Nebalia bipes'' (Fabricius, 1780) *'' Nebalia borealis'' Dahl, 1985 *'' Nebalia brucei'' Olesen, 1999 *'' Nebalia cannoni'' Dahl, 1990 *'' Nebalia capensis'' Barnard, 1914 *''Nebalia clausi'' Dahl, 1985 *'' Nebalia dahli'' Kazmi & Tirmizi, 1989 *'' Nebalia daytoni'' Vetter, 1996 *'' Nebalia falklandensis'' Dahl, 1990 *''Nebalia geoffroyi'' Milne-Edwards, 1928 *''Nebalia gerkenae'' Haney & Martin, 2000 *'' Nebalia herbstii'' Leach, 1814 *''Nebalia hessleri'' Martin, Vetter & Cash-Clark, 1996 *''Nebalia ilheoensis'' Kensley, 1976 *''Nebalia kensleyi'' Haney & Martin, 2005 *''Nebalia kocatasi'' Moreira, Kocak & Katagan, 2007 *''Nebalia lagartensis'' Escoba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crustacean
Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group can be treated as a subphylum under the clade Mandibulata. It is now well accepted that the hexapods emerged deep in the Crustacean group, with the completed group referred to as Pancrustacea. Some crustaceans (Remipedia, Cephalocarida, Branchiopoda) are more closely related to insects and the other hexapods than they are to certain other crustaceans. The 67,000 described species range in size from '' Stygotantulus stocki'' at , to the Japanese spider crab with a leg span of up to and a mass of . Like other arthropods, crustaceans have an exoskeleton, which they moult to grow. They are distinguished from other groups of arthropods, such as insects, myriapods and chelicerates, by the possession of biramous (two-parted) limbs, and by th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nebaliopsididae
Nebaliopsididae is a family of leptostracan crustacean Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group can ...s. It contains only two species, '' Nebaliopsis typica'' and '' Pseudonebaliopsis atlantica''. References Leptostraca Crustacean families {{malacostraca-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
