Sarcopterygians are a group of prehistoric fish which are traditionally classed as lobe-finned fishes, which in the real world include the modern day lungfish and the coelacanth, Latimeria.

• 肉鳍四脚鱼是历前鱼类的一种，传统上把它归入圆鳍鱼纲。真实世界里的圆鳍鱼有肺鱼，腔棘鱼和矛尾鱼。