A member of the Crossopterygii,a group of bony fishes with paired,rounded fins that are extinct except for the coelacanths and are regarded as ancestors of amphibians and other terrestrial vertebrates.

• 总鳍鱼一种总鳍目鱼，长有成对的圆形鳍，除了空鳍鱼类的鱼之外现已全部灭绝，被认为是两栖纲动物和其它陆生脊椎动物的祖先