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nounfishes having paired fins resembling limbs and regarded as ancestral to amphibians
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Definition that contains crossopterygii
- dipnoi bony fishes of the southern hemisphere that breathe by a modified air bladder as well as gills; sometimes classified as an order of Crossopterygii
- lobe-finned fish any fish of the order Crossopterygii; most known only in fossil form
- lobefin any fish of the order Crossopterygii; most known only in fossil form
- crossopterygian any fish of the order Crossopterygii; most known only in fossil form
- subclass dipnoi bony fishes of the southern hemisphere that breathe by a modified air bladder as well as gills; sometimes classified as an order of Crossopterygii