crossopterygian /krɒˌsɒptəˈrɪdʒɪən/

• 1. 

  N any bony fish of the subclass Crossopterygii, having fleshy limblike pectoral fins. The group, now mostly extinct, contains the ancestors of the amphibians 总鳍鱼 → see also coelacanth

• 2. 

  ADJ of, relating to, or belonging to the Crossopterygii 总鳍鱼的