lobe-finned fish
(亦作lobefin)
noun
1- a fish of a largely extinct group having fleshy lobed fins, including the probable ancestors of the amphibians总鳍鱼。比较RAY-FINNED FISH.
1.1
- Subclass Crossopterygia(or Actinistia or Coelacanthimorpha): the only living representative is the coelacanth总鳍亚纲（或腔棘鱼亚纲）：唯一存活的代表是腔棘鱼。