sə̇ˈrad.ədəs noun
Etymology: New Latin, from cerat- + -odus
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 — see barramunda
2. -es : any fish or fossil of Ceratodus or a closely related genus