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''Ctenacanthus'' is a prehistoric cartilaginous fish genus. Remains have been found in the Bloyd Formation in Arkansas, United States (Carboniferous period) and in South America.〔Acanthodian fish remains from the Upper Silurian or Lower Devonian of the Amazon Basin, Brazil. Philippe Janvier, Jose Henrique G. Melo, Palaeontology, Aug 1988, Vol 31, part 3〕 == Species == * †''Ctenacanthus amblyxiphias'' Cope, 1891 * †''Ctenacanthus buttersi'' St. John & Worthen, 1883 * †''Ctenacanthus chemungensis'' Claypole, 1885 * †''Ctenacanthus cliftonensis'' Branson & Mehl, 1938 * †''Ctenacanthus concinnus'' Newberry, 1875 * †''Ctenacanthus costellatus'' Traquair, 1884 * †''Ctenacanthus elegans'' Tuomey, 1858 - Alabama〔(Bibliography and Catalogue of the Fossil Vertebrata of North America, Numéro 179, Oliver Perry Hay at Google Books )〕 * †''Ctenacanthus furcicarinatus'' Newberry, 1875 * †''Ctenacanthus major'' Agassiz, 1843 * †''Ctenacanthus maranhensis'' Santos, 1946 * †''Ctenacanthus nodocostatus'' Hussakof & Bryant, 1918 * †''Ctenacanthus terrelli'' Newberry, 1889 * †''Ctenacanthus tumidus'' Newberry, 1889 ; species brought into synonymy * ''Ctenacanthus brevis'' Agassiz (1837) syn. of ''Avonacanthus'' Maisey 2010〔John G. Maisey (2010). "Heslerodidae (Chondrichthyes, Elasmobranchii), a new family of Paleozoic phalacanthous sharks". Kirtlandia 57: 13–21.〕 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「Ctenacanthus」の詳細全文を読む スポンサード リンク
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