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Related to lobe-finned fish: ray-finned fish
Any of various bony fishes of the class Sarcopterygii, having paired fleshy rounded fins. The lobe-finned fishes first appeared in the Silurian Period and are extinct except for the coelacanths and lungfishes. Also called lobefin, sarcopterygian.
Any of various bony fish with fins that are rounded and fleshy, suggesting limbs. The lobe-finned fish are thought by some to be ancestors of amphibians and other land-dwelling vertebrate animals. They first appeared in the Ordovician Period and are extinct except for the coelacanth and lungfish.
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|Noun||1.||lobe-finned fish - any fish of the order Crossopterygii; most known only in fossil form|
bony fish - any fish of the class Osteichthyes
Crossopterygii, subclass Crossopterygii - fishes having paired fins resembling limbs and regarded as ancestral to amphibians