Triodus
| Triodus | |
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| Triodus | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Superorder: | Selachimorpha |
| Order: | †Xenacanthida |
| Family: | †Xenacanthidae |
| Genus: | †Triodus Jordan, 1849 |
| Species | |
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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 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[]
- ^ 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. 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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Categories:
- Prehistoric shark genera
- Carboniferous sharks
- Permian sharks
- Triassic sharks
- Prehistoric fish of North America
- Carboniferous United States
- Permian United States
- Triassic United States
- Prehistoric fish of South America
- Permian Brazil
- Fossils of Brazil
- Paraná Basin
- Fossil taxa described in 1849
- Prehistoric cartilaginous fish stubs