Ceratosauria: Difference between revisions
| [pending revision] | [pending revision] |
m robot Adding: fr:Ceratosauria |
Chessboy123 (talk | contribs) mNo edit summary |
||
| Line 25: | Line 25: | ||
** ''[[Berberosaurus]]'' |
** ''[[Berberosaurus]]'' |
||
** ''[[Chuandongocoelurus]]'' |
** ''[[Chuandongocoelurus]]'' |
||
** ''[[Deltadromeus]]'' |
|||
** ''[[Elaphrosaurus]]'' |
** ''[[Elaphrosaurus]]'' |
||
** ''[[Limusaurus]]'' |
** ''[[Limusaurus]]'' |
||
Revision as of 22:04, 16 January 2010
| Ceratosaurs Temporal range: Jurassic-Cretaceous
| |
|---|---|
| |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Superorder: | |
| Order: | |
| Suborder: | |
| Infraorder: | Ceratosauria Marsh, 1884
|
| Families | |
Ceratosaurs are members of a group of theropod dinosaurs defined as all theropods sharing a more recent common ancestry with Ceratosaurus than with birds. There is presently no universally agreed upon listing of species or diagnostic characters of Ceratosauria, though they were less derived anatomically than the more diverse Tetanurae. According to the latest and most accepted theory, Ceratosauria includes the Late Jurassic to Late Cretaceous theropods Ceratosaurus, Elaphrosaurus, and Abelisaurus, found primarily (though not exclusively) in the Southern Hemisphere. Originally, Ceratosauria included the above dinosaurs plus the Late Triassic to Early Jurassic Coelophysoidea (Coelophysis, Dilophosaurus, etc.), implying a much earlier divergence of ceratosaurs from other theropods. However, most recent studies have shown that coelophysoids do not form a clade with other ceratosaurs, and should be excluded from this group. Those analysis also imply that the Ceratosauria is probably a sister clade to the Tetanurae and thus shares a common ancestor.
Classification
Taxonomy
- Infraorder Ceratosauria
Phylogeny
The following cladogram follows an analysis by Xu Xing and colleagues, 2009.[1]
| Ceratosauria |
| ||||||||||||
References
- ^ Xu, X., Clark, J.M., Mo, J., Choiniere, J., Forster, C.A., Erickson, G.M., Hone, D.W.E., Sullivan, C., Eberth, D.A., Nesbitt, S., Zhao, Q., Hernandez, R., Jia, C.-K., Han, F.-L., and Guo, Y. (2009). "A Jurassic ceratosaur from China helps clarify avian digital homologies." Nature, 459(18): 940-944. doi=10.1038/nature08124
External links
- Ceratosauria at DinoData
