Tarrasiiformes
| Tarrasiiformes Temporal range: Carboniferous | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Subphylum: | Vertebrata |
| Infraphylum: | Gnathostomata |
| Superclass: | Osteichthyes |
| Class: | Actinopterygii |
| Subclass: | Chondrostei[1] |
| Order: | Tarrasiiformes |
Tarasiiformes were an extinct order of prehistoric bony fish. Paratarrasius is an extinct genus of Tarasiiformes.[2]
Timeline of genera
Tarrasius
| Tarrasius | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Subphylum: | Vertebrata |
| Infraphylum: | Gnathostomata |
| Superclass: | Osteichthyes |
| Class: | Actinopterygii |
| Subclass: | Chondrostei |
| Order: | Tarrasiiformes[1] |
| Genus: | Tarrasius |
Tarrasius is an extinct genus of Tarasiiformes. Tarrasius problematicus (of Mississippian origin, ~ 350 Ma) featured a fully regionalized tetrapod-like spine divided into 5 distinct segments.[3][4] It is not considered a transitional fossil though, but an extreme example of convergent evolution.
See also
Bibliography
- Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology 363: 1–560. Retrieved 2011-05-17.
References
- 1 2 "Tarrasiiformes". Paleobiology Database. Retrieved November 17, 2012.
- ↑ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology 363: 1–560. Retrieved 2009-02-27.
- ↑ Lauren Cole Sallan (23 May 2012). "Tetrapod-like axial regionalization in an early ray-finned fish" (PDF). Proceedings of the Royal Society B 279 (1741): 3264–3271. doi:10.1098/rspb.2012.0784. PMID 22628471.
- ↑ "Human-Like Spine Morphology Found in Aquatic Eel Fossil". Science Daily. May 22, 2012.
External links
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