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 • Syn: subclass Dipnoi • Hypernyms: class • Member Holonyms: Osteichthyes, class Osteichthyes • Member Meronyms: lungfish, Ceratodontidae, family Ceratodontidae
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