lobe-finned fish

lobe-finned fish

L0218350 (lōb′fĭnd′)n. 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.

lobe-finned fish

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.

Thesaurus

Noun

1.

lobe-finned fish - any fish of the order Crossopterygii; most known only in fossil formcrossopterygian, lobefinbony fish - any fish of the class OsteichthyesCrossopterygii, subclass Crossopterygii - fishes having paired fins resembling limbs and regarded as ancestral to amphibianscoelacanth, Latimeria chalumnae - fish thought to have been extinct since the Cretaceous period but found in 1938 off the coast of Africa