lobe-finned fish

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Related to lobefins: Crossopterygii, crossopterygians

lobe-finned fish

 (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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.lobe-finned fish - any fish of the order Crossopterygiilobe-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
coelacanth, Latimeria chalumnae - fish thought to have been extinct since the Cretaceous period but found in 1938 off the coast of Africa