Definition of ceratodus
1 capitalized : a genus (the type of the family Ceratodontidae) comprising dipnoan fishes that have archipterygial pectoral and pelvic fins and dental plates with radiating ridges, being originally based on and now usually restricted to fossil forms from the Mesozoic but in some especially former classifications including the surviving Australian lungfish
2 plural -es : any fish or fossil of Ceratodus or a closely related genus
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Origin and Etymology of ceratodus
New Latin, from cerat- + -odus
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