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Temporal range: 228–70 Ma
Middle Triassic-Late Cretaceous
Illustration of Ceratodus by Heinrich Harder
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sarcopterygii
Order: Ceratodontiformes
Family: Ptychoceratodontidae
Genus: Ceratodus
Agassiz, 1837

C. latissimus (type)
Agassiz, 1837 Many more, see text

Ceratodus (Greek for "horned tooth") was a wide-ranging genus of extinct 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 Ma. The closest living relative of Ceratodus is thought to be the Queensland lungfish, Neoceratodus forsteri, which means "new Ceratodus" in Greek.


  • C. latissimus (type)
    Agassiz, 1837
  • C. africanus
    Haug, 1905
  • C. eruciferus
    Cope, 1876 (nomen dubium)
  • C. felchi
    Kirkland, 1987 (moved to C. guentheri by Kirkland 1998)
  • C. frazieri
    Ostrom, 1970
  • C. guentheri
    Marsh, 1878 (moved to Potamoceratodus in 2010 by Pardo et al.)
  • C. gustasoni
    Kirkland, 1987
  • C. hieroglyphus
    Cope, 1876 (nomen dubium)
  • C. humei
    Priem, 1914
  • Jurassic C. robustus
    Knight, 1898
  • C. szechuanensis
    Young, 1942
  • C. fossanovum
    Kirkland, 1998
  • C. texanus
    Parris et al. 2014[1]
  • C. carteri
    Main et al. 2014
  • C. kranzi
    Frederickson et al. 2016[2]



  1. ^ Parris, D. C., Grandstaff, B. S., & Banks, N. T. (2011). LUNGFISHES FROM THE TRINITY GROUP (CRETACEOUS) OF NORTH TEXAS. Texas Journal of Science, 63.
  2. ^ Joseph A. Frederickson, Thomas R. Lipka and Richard L. Cifelli (2016). "A new species of the lungfish Ceratodus (Dipnoi) from the Early Cretaceous of the eastern U.S.A.". Journal of Vertebrate Paleontology. Online edition: e1136316. doi:10.1080/02724634.2016.1136316.