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Thecachampsa
''Thecachampsa'' is an extinct genus of tomistomine crocodylian. Fossils have been found from the eastern United States in deposits that are late Oligocene in age. The type species is ''T. antiqua''. Several other species have been erected. Those named in the 19th century were distinguished primarily by the shape of their teeth, and have since been combined with ''T. antiqua''. More recently erected species were reassigned from other tomistomine genera, although their assignment to ''Thecachampsa'' has since been questioned. The holotype of ''T. antiqua'' is an isolated tooth of little diagnostic value, making the assignment of any other body parts to the genus, including skulls and vertebrae, questionable.
==Description==
''Thecachampsa'', like other tomistomines of the Oligocene and Miocene, was considerably larger than living crocodilians. Like living gharials, it had a long, slender snout. The teeth were long and recurved. Unlike its living relatives, ''Thecachampsa'' was marine, inhabiting estuaries and shallow coastal waters. Other marine fossils such as sea snail and bivalve shells, shark teeth, and barnacles have been found alongside remains of ''Thecachampsa'' and similar tomistomines.
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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