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Sphenocephalus : ウィキペディア英語版 | Sphenocephalus
''Sphenocephalus'' is an extinct genus of ray-finned fish that lived during the Cretaceous period. Fossils have been found in England and Italy. ''Sphenocephalus'' was about long, with a rather large head, and may have resembled a modern black bass in appearance. It was one of the earliest fish to have the pelvic fins placed beneath th pectoral fins, a common feature in modern fish that improves swimming manoeuvrability. Like the modern trout-perches, it possessed a mixture of modern and primitive features, and it was probably one of the earliest perciform fish. ==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「Sphenocephalus」の詳細全文を読む
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