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Pliogonodon
''Pliogonodon'' is an extinct genus of crocodylomorph. The type species, ''P. priscus'', was named by Joseph Leidy in 1856. The holotype, known as USNM 7448, is a worn and broken tooth found from Phoebus Landing on the Cape Fear River in North Carolina. Although the age of the strata in which the tooth was found was not recorded, it is thought to have come from Miocene-age beds. The holotype and another tooth found at the same location are all that is known from the genus. Because of the lack of material, the classification of ''Pliogonodon'' has been disputed. Since its description, the tooth has been considered indistinguishable from those of the Madagascan crocodyline ''Voay robustus'', thereby resulting in the genus being considered a junior synonym of ''V. robustus'' by some paleontologists.〔 The genus is considered a ''nomen dubium'' because of the lack of diagnostic features possessed by the teeth, and has been suggested to be synonymous with the alligatoroid ''Deinosuchus''.〔(【引用サイトリンク】title=''Deinosuchus'' )〕 It has also been assigned to the basal neosuchian family Goniopholididae.
The two teeth are conical and curve slightly inward, estimated to be around in length if they had been fully preserved. The enamel is wrinkled and the base of the crowns are hollow.〔
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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