Ctenodus

Ctenodus (from Greek: κτείς kteis, 'comb' and Greek: ὀδούς odoús 'tooth')^[2] is an extinct genus of prehistoric lungfish and the longest-surviving genus of Carboniferous lungfish.

Ctenodus Temporal range: Tournaisian–Moscovian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Dipnoi
Family:	†Ctenodontidae
Genus:	†Ctenodus Agassiz, 1838[1]