- 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. Source: opted
- 2. 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. Source: webster
- 3. A group of ganoid fishes, including the living genera Ceratodusand Lepidosiren, which present the closest approximation to theAmphibia. The air bladder acts as a lung, and the nostrils openinside the mouth. See Ceratodus, and Illustration in Appendix. Source: adambom
- 4. n bony fishes of the southern hemisphere that breathe by a modified air bladder as well as gills; sometimes classified as an order of Crossopterygii Source: ecdict
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