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List Of Prehistoric Chitons
This list of prehistoric chitons is an attempt to create a comprehensive listing of all Genus, genera from the fossil record that have ever been considered to be polyplacophora, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (''nomen dubium, nomina dubia''), or were not formally published (''nomen nudum, nomina nuda''), as well as synonym (zoology), junior synonyms of more established names, and genera that are no longer considered chitons. Naming conventions and terminology Naming conventions and terminology follow the International Code of Zoological Nomenclature. Technical terms used include: * Synonym (zoology), Junior synonym: A name which describes the same taxon as a previously published name. If two or more genera are formally designated and the type (zoology), type specimens are later assigned to the same genus, the first to be published (in chronological order) is the senior syn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matthevia
''Matthevia'' is a genus of Cambrian molluscs, perhaps related to the chitons. It consists of repeated monoplacophoran-like shells; according to one hypothesis, chitons arose when these tall shells began to overlap over the generations. The tall element of the shell was retained and forms the tips of modern chiton plates. There are distinct head, 'centre', and tail valves, which occur approximately in the ratio 1:5:1 — suggesting a seven-plated configuration. Matthevia was first described by Charles D. Walcott Charles Doolittle Walcott (March 31, 1850February 9, 1927) was an American paleontologist, administrator of the Smithsonian Institution from 1907 to 1927, and director of the United States Geological Survey.Wonderful Life (book) by Stephen Jay Go ... in 1885.Walcott, C. D., 1885, Note on some Paleozoic pteropods: Am. Jour. Sci., v. 30, p. 17-21. References Prehistoric chiton genera Cambrian molluscs Cambrian animals of North America Cambrian first appeara ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
