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Platysomus
''Platysomus'' is an extinct genus of ray-finned fish that lived in the Carboniferous and Permian periods. Fossils have been found worldwide. ''Platysomus'' was about long, and shaped similarly to the discus fish, having the same flattened body and alongated dorsal and anal fins. Its jaws were placed vertically under the braincase, giving it a wide gape. ''Platysomus'' is thought to have fed on plankton, and lived in both fresh and salt water. ==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「Platysomus」の詳細全文を読む
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