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Definition of Dipnoi
1. Noun. Bony fishes of the southern hemisphere that breathe by a modified air bladder as well as gills; sometimes classified as an order of Crossopterygii.
Group relationships: Class Osteichthyes, Osteichthyes
Member holonyms: Lungfish, Ceratodontidae, Family Ceratodontidae
Generic synonyms: Class
Definition of Dipnoi
1. n. pl. A group of ganoid fishes, including the living genera Ceratodus and Lepidosiren, which present the closest approximation to the Amphibia. The air bladder acts as a lung, and the nostrils open inside the mouth. See Ceratodus, and Illustration in Appendix.
Medical Definition of Dipnoi
1.