Ceratodus Fossil range: 228–70 Ma PreЄ Є O S D C P T J K Pg N Middle Triassic-Late Cretaceous
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Sarcopterygii Order: Ceratodontiformes Family: Ptychoceratodontidae Genus: Ceratodus Agassiz, 1837
Species
C. latissimus (type) Agassiz, 1837 C. africanus Haug, 1905 C. cruciferus Cope, 1876 C. felchi Kirkland, 1987 C. frazieri Ostrom, 1970 C. guentheri Marsh, 1878 C. gustasoni >Kirkland, 1987 C. hieroglyphus >Cope, 1876 C. humei Priem, 1914 C. robustus Knight, 1898 C. szechuanensis Young, 1942

Ceratodus tooth plates

Ceratodus (Greek for "horned tooth") was a wide-ranging genus of extinct sarcopterygiian lungfish. Fossil evidence dates back to the Middle Triassic 228 million years ago. A wide range of fossil species from different time periods have been found around the world in places such as the United States, Argentina, England, Germany, Egypt, Madagascar, China, and Australia. Ceratodus is believed to have become extinct sometime around the beginning of the Maastrichtian stage of the Late Cretaceous 70 m.y.a. The closest living relative of Ceratodus is thought to be the Queensland lungfish, Neoceratodus forsteri, which means "new Ceratodus" in Greek.

References

• Ceratodus at The Paleobiology Database

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