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Euronychodon asiaticus : ウィキペディア英語版
Euronychodon

''Euronychodon'' ("European claw tooth") is the name given to a genus of coelurosaur dinosaur from the Late Cretaceous of Europe and Asia. ''Euronychodon'' is known from teeth only. These are similar to those of another coelurosaur tooth genus, ''Paronychodon''.
==Species==
Two species of ''Euronychodon'' have been named to date.
*''E. portucalensis'' (named for Portugal, from ''Portucale'', an old name of Porto): the remains consist of three teeth. In 1988 referred to ''Paronychodon lacustris'',〔Antunes, M.T. & Broin, F., 1988, "Le Crétacé terminal de Beira Litoral, Portugal: remarques stratigraphiques et écologiques, étude complémentaire de ''Rosasia soutoi'' (Chelonii, Bothremydidate)", ''Ciências de Terra'' 9: 153-200〕 they were later considered diagnostic enough for them to represent a distinct genus and species. They were found at the locality of Taveiro, dated as Campanian-Maastrichtian (about 70 million years old). The type species of ''Euronychodon'', ''E. portucalensis'' was named and described in 1991 by Miguel Telles Antunes and Denise Sigogneau-Russell. The generic name is a contraction of "Europe" and ''Paronychodon''. The holotype CEPUNL TV 20, is one of the teeth. It is 1.8 millimetres long, recurved and strongly elongated with a D-shaped cross-section. The other two teeth, CEPUNL TV 18 and CEPUNL TV 19, are the paratypes.〔M.T. Antunes, D. Sigogneau-Russell, 1991, "Nouvelles données sur les Dinosaures du Crétacé supérieur du Portugal", ''Comptes-rendus de la Académie des Sciences de Paris, Series II'' 313: 113–119〕
*''E. asiaticus'' (named for Asia): the referred fossils consist of seven teeth, found in the Bissekty Formation of Uzbekistan, (dated to about 92 million years ago) and named and described by Lev Nesov in 1995. The holotype is CCMGE N 9/12454; the other six teeth are the paratypes. The type tooth has fourteen vertical ridges on the inner side. It is usually considered a nomen dubium. It is much earlier than ''E. portucalensis'', which means it could belong to a different animal. Nesov himself considered ''Euronychodon'' a pure form taxon and suggested such deviant teeth grew accidentally, when tooth pairs happened to develop on closing jaw bone sutures with juvenile individuals.〔Nesov, L.A., 1995, "Dinozavri severnoi Yevrasii: Novye dannye o sostave kompleksov, ekologii i paleobiogeografii", Scientific Research Institute of the Earth's Crust, St. Petersburg State University, St. Petersburg, Russia: pp 156〕

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