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Cylindroleberididae
Cylindroleberididae is a family of ostracods that shows remarkable morphological diversity. The defining feature is the possession of gills: 7–8 leaf-like pairs at the posterior of the body. Other features common to all species in the family include a "baleen-comb" on both the maxilla and the fifth limb, a sword-shaped coxal endite on the mandible, and the triaenid bristles on the basal endites of the mandible. Species of the Cylindroleberididae are found in marine areas, from shallow waters to depths of more than . Most species are approximately long. In 2006, there were 219 described species. A fossil discovered in 2003 with preserved soft parts has been assigned to the Cylindroleberididae. The fossil appears to have gills and is thought to date from . Subtaxa Cylindroleberididae contains the following subfamilies and genera. * Asteropteroninae Kornicker, 1981 **'' Actinoseta'' Kornicker, 1958 **'' Asteropteron'' Skogsberg, 1920 **'' Asteropterygion'' Kornicker, 1981 **'' M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nasunaris
''Nasunaris flata'' is an extinct genus of ostracods which existed in the United Kingdom during the Silurian period. It was first named by David J. Siveter, Derek E. G. Briggs, Derek J. Siveter and Mark D. Sutton in 2010. See also *2010 in paleontology Plants Angiosperms Molluscs Newly named bivalves Arthropods Fishes Amphibians Newly named amphibians Basal reptiles Newly named basal reptiles Ichthyopterygians Newly named ichthyopterygians Lepidosauromorphs Newly name ... References Myodocopida Prehistoric ostracod genera Silurian animals Fossil taxa described in 2010 Monotypic crustacean genera Fossils of Great Britain {{paleo-crustacean-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ostracod
Ostracods, or ostracodes, are a class of the Crustacea (class Ostracoda), sometimes known as seed shrimp. Some 70,000 species (only 13,000 of which are extant) have been identified, grouped into several orders. They are small crustaceans, typically around in size, but varying from in the case of ''Gigantocypris''. Their bodies are flattened from side to side and protected by a bivalve-like, chitinous or calcareous valve or "shell". The hinge of the two valves is in the upper (dorsal) region of the body. Ostracods are grouped together based on gross morphology. While early work indicated the group may not be monophyletic and early molecular phylogeny was ambiguous on this front, recent combined analyses of molecular and morphological data found support for monophyly in analyses with broadest taxon sampling. Ecologically, marine ostracods can be part of the zooplankton or (most commonly) are part of the benthos, living on or inside the upper layer of the sea floor. While Myodoc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gustav Wilhelm Müller
Christian Gustav Wilhelm Müller (17 February 1857, Mühlberg near Erfurt – 18 February 1940) was a German zoologist specializing in Ostracoda. In 1895 he succeeded Carl Eduard Adolph Gerstaecker as director of the zoological museum at Greifswald, a position he maintained until 1923. He was the taxonomic authority of numerous taxa in Ostracoda; a few examples being the subfamily Conchoeciinae and the genera ''Archiconchoecia'', ''Cytherois'' and ''Stenocypria''. In 1965, the genus '' Muellerina'' Bassiouni (family Hemicytheridae) was named in his honor. Written works * ''Neue Cypridiniden'', 1891 - New Cypridinidae. * ''Die Ostracoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte'', 1894 - Ostracods from the Gulf of Naples and adjacent marine areas. * ''Ostracoda'', 1894 - Ostracoda. * ''Deutschlands Süswasser-Ostracoden'', 1900 - German freshwater ostracods. * ''Die Ostracoden der Siboga-Expedition'', 1906 - Ostracoda from the Siboga Expedition. * ''Ost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gill
A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist. The microscopic structure of a gill presents a large surface area to the external environment. Branchia (pl. branchiae) is the zoologists' name for gills (from Ancient Greek ). With the exception of some aquatic insects, the filaments and lamellae (folds) contain blood or coelomic fluid, from which gases are exchanged through the thin walls. The blood carries oxygen to other parts of the body. Carbon dioxide passes from the blood through the thin gill tissue into the water. Gills or gill-like organs, located in different parts of the body, are found in various groups of aquatic animals, including mollusks, crustaceans, insects, fish, and amphibians. Semiterrestrial marine animals such as crabs and mudskippers have gill cham ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
