lobe-finnedfish

lobe-finned fish (lōbʹfĭnd') n.

A member of the subclass Crossopterygii, a group of bony fishes with paired rounded fins, suggesting limbs, that are extinct except for the coelacanths. The lobe-finned fishes are regarded by some as ancestors of amphibians and other terrestrial vertebrates. Also called crossopterygian, lobefin.

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