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Cobelodus
''Cobelodus'' is an extinct genus of shark that lived in the Middle to Late Carboniferous period in what is today Illinois and Iowa. ''Cobelodus'' was a long predator. Although it was a shark, ''Cobelodus'' had a number of differences from modern forms. It had a bulbous head, large eyes, a high-arched back, and a dorsal fin placed far to the rear, above the pelvic fins. Because of its large eyes, it is thought to have lived in the deeper, darker parts of the sea, hunting crustaceans and squid. Another unusual physical feature of ''Cobelodus'' are the long, flexible cartilagenous 'tentacles' sprouting from its pectoral fins. Their purpose is unknown. ==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「Cobelodus」の詳細全文を読む
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