Triodus

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Triodus
Temporal range: Carboniferous-Triassic
~318.1–212.1 Ma
Triodus1db.jpg
Triodus
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Order: Xenacanthida
Family: Xenacanthidae
Genus: Triodus
Jordan, 1849
Species
  • T. elpia
  • T. moorei
  • T. richterae

Triodus is an extinct genus of xenacanthidan shark that lived from the Carboniferous to the Triassic. It was a freshwater shark, and fossils have been found in the Chinle Formation and Black Prince Limestone of Arizona, the Petrified Forest Formation of New Mexico and the Tecovas Formation of Texas, United States.[1]

References[edit]

Further reading[edit]

  • The Rise of Fishes: 500 Million Years of Evolution by John A. Long