释义 |
jawless fish in American English (ˈdʒɔlɪs) any of a class (Agnatha) of fishes with a cartilaginous skeleton, an eel-like body, and a circular, sucking mouth lacking jaws, consisting of the lampreys and hagfishes Examples of 'jawless fish' in a sentencejawless fish With relatively few complex species on land, the most advanced forms of life were primitive jawless fish and squid-like cephalopods, mostly living in shallow seas.One is the jawless fish, the lampreys, an ancient group with just a few species init. |