Choanichthyes (Sarcopterygii) Term used by some zoologists to group together Crossopterygii (lobe-finned fish) and Dipnoi (lungfish). Members of this group or subclass were thought to share functional lungs, external and internal nares (nostrils), and narrow-based, paired fins with fleshy lobes.

Choanichthyes (Sarcopterygii) The name given by some zoologists to a group (subclass) comprising the Crossopterygii (lobe-finned fish) and Dipneusti (lungfish). Members of this group were thought to share functional lungs, external and internal nares (choanae), and narrow-based, paired fins with fleshy lobes.