Triodus
Extinct genus of sharks
| Triodus Temporal range: Carboniferous-Triassic ~318.1–212.1 Ma PreꞒ Ꞓ O S D C P T J K Pg N | |
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| Fossil | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Order: | †Xenacanthida |
| Family: | †Xenacanthidae |
| Genus: | †Triodus Jordan, 1849 |
| Species | |
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Triodus is an extinct genus of xenacanthidan fish that lived from the Carboniferous to the Triassic. It was a freshwater fish, and fossils have been found in the Chinle Formation and Black Prince Limestone of Arizona, the Petrified Forest Member of New Mexico and the Tecovas Formation of Texas, United States.[1] In 2017, a new species Triodus richterae was described from the Rio do Rasto Formation of Brazil.[2]
References
Paleontology portal
Sharks portal
- ^ Triodus at Fossilworks.org
- ^ Victor E. Pauliv; Agustín G. Martinelli; Heitor Francischini; Paula Dentzien-Dias; Marina B. Soares; Cesar L. Schultz; Ana M. Ribeiro (2017). "The first Western Gondwanan species of Triodus Jordan 1849: A new Xenacanthiformes (Chondrichthyes) from the late Paleozoic of Southern Brazil". Journal of South American Earth Sciences. 80: 482–493. Bibcode:2017JSAES..80..482P. doi:10.1016/j.jsames.2017.09.007.
Further reading
- The Rise of Fishes: 500 Million Years of Evolution by John A. Long
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