|
''Ceratodus'' (Greek for "horned tooth") was a wide-ranging genus of extinct lungfish. Fossil evidence dates back to the Middle Triassic 228 million years ago. A wide range of fossil species from different time periods have been found around the world in places such as the United States, Argentina, England, Germany, Egypt, Madagascar, China, and Australia. ''Ceratodus'' is believed to have become extinct sometime around the beginning of the Maastrichtian stage of the Late Cretaceous, 70 Ma. The closest living relative of ''Ceratodus'' is thought to be the Queensland lungfish, ''Neoceratodus forsteri'', which means "new ''Ceratodus''" in Greek. ==Species== * ''C. latissimus'' (type) Agassiz, 1837 * ''C. africanus'' Haug, 1905 * ''C. cruciferus'' Cope, 1876 * ''C. felchi'' Kirkland, 1987 * Jurassic ''C. frazieri'' Ostrom, 1970 * ''C. guentheri'' Marsh, 1878 (moved to ''Potamoceratodus'' in 2010 by Pardo ''et al.'') * ''C. gustasoni'' Kirkland, 1987 * ''C. hieroglyphus'' Cope, 1876 * ''C. humei'' Priem, 1914 * Jurassic '' C. robustus'' Knight, 1898 * '' C. szechuanensis'' Young, 1942 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「Ceratodus」の詳細全文を読む スポンサード リンク
|