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Noteosuchus : ウィキペディア英語版
Noteosuchus

''Noteosuchus'' is an extinct genus of basal rhynchosaur known from the earliest Triassic deposits of Eastern Cape Province, South Africa. It was first named by David Meredith Seares Watson in 1912 and the type species is ''Eosuchus colletti''. The generic name ''Eosuchus'' is preoccupied by the generic name of ''Eosuchus lerichei'' Dollo, 1907, a gavialoid crocodilian known from northern France.〔 Thus, an alternative generic name, ''Noteosuchus'', was proposed by Robert Broom in 1925. The generic name erected by Broom (1925) is a compound, meaning "Not ''Eosuchus''",〔 while "Eosuchus" is derived from the name of Eos, the goddess of the dawn in Greek mythology, and ''suchus'', Latinized from the Greek ''souchos'', an Egyptian crocodile god, thus meaning "dawn crocodile". The specific name, ''colletti'', honors Mr. Collett for the discovery of the holotype and only known specimen.〔
''Noteosuchus'' is known solely from the holotype AM 3591, a well preserved partial postcranial skeleton currently housed at the Albany Museum, South Africa. It was collected from a hill slope at Grassy Ridge locality, from the Katberg Formation of the Beaufort Group. This horizon belongs to the ''Lystrosaurus'' Assemblage Zone, dating to the early Induan stage of the Early Triassic period. Thus, ''Noteosuchus'' represents the geologically oldest known rhynchosaur species.〔〔〔
David M. Dilkes (1998) suggested that ''Noteosuchus colletti'' may be a junior synonym of ''Mesosuchus browni'', and thus this species has been widely ignored since. However, Ezcurra, Scheyer and Butler (2014) noted that this synonymy was based only on generalized rhynchosaur plesiomorphic similarities rather than autapomorphies. They found this to be unlikely because the temporal gap between the two species spans most of the Early Triassic, as ''Mesosuchus'' is otherwise known only from the Middle Triassic. Additionally, their phylogenetic analysis recovered ''Noteosuchus'' and ''Mesosuchus'' in a polytomy with ''Howesia browni'', a result which is inconsistent with such synonymy.
==References==



抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Noteosuchus」の詳細全文を読む



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