总鳍鱼目
总鳍鱼亚纲

[ noun ]
fishes having paired fins resembling limbs and regarded as ancestral to amphibians
<noun.animal>

Crossopterygii \Cros*sop`te*ryg"i*i\ (kr?s-s?p`t?-r?j?-?), n.
pl. [NL., fr. Gr. ??? tassels, a fringe + ?????, dim. of ????
wing, fin.] (Zo["o]l.)
An order of ganoid fishes including among living species the
bichir ({Polypterus}). See {Brachioganoidei}.