Sinotyrannus
| Sinotyrannus Temporal range: Early Cretaceous, 120Ma | |
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| Diagram of known fossil remains | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Suborder: | Theropoda |
| Superfamily: | †Tyrannosauroidea |
| Family: | †Proceratosauridae |
| Genus: | †Sinotyrannus Ji et al., 2009 |
| Species: | † S. kazuoensis |
| Binomial name | |
| Sinotyrannus kazuoensis Ji et al., 2009 | |
Sinotyrannus (meaning "Chinese tyrant") is a genus of large basal proceratosaurid[1] dinosaur, a relative of tyrannosaurids which flourished in North America and Asia during the Jurassic and early Cretaceous periods. Sinotyrannus is known from a single incomplete fossil specimen including a partial skull, from the Early Cretaceous Jiufotang Formation of Liaoning, China. Though it is not much younger than primitive tyrannosauroids such as Dilong, it is similar in size to later forms such as Tyrannosaurus. It was much larger than contemporary tyrannosauroids; reaching a total estimated length of 10 meters (33 ft), it is the largest known theropod from the Jehol Biota. The type species is S. kazuoensis, described by Ji et al., in 2009.[2]
Classification
Sinotyrannus is a basal proceratosaurid tyrannosauroid. It is considered to be part of a clade containing Juratyrant and Stokesosaurus.[3]
Below is a cladogram by Loewen et al. in 2013.[3]
| Tyrannosauroidea |
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References
- ↑ Brusatte, S. L.; Norell, M. A.; Carr, T. D.; Erickson, G. M.; Hutchinson, J. R.; Balanoff, A. M.; Bever, G. S.; Choiniere, J. N. et al. (2010). "Tyrannosaur paleobiology: new research on ancient exemplar organisms". Science 329 (5998): 1481–1485. doi:10.1126/science.1193304. PMID 20847260.
- ↑ Ji, Q.; Ji, S.-A.; Zhang, L.-J. (2009). "First large tyrannosauroid theropod from the Early Cretaceous Jehol Biota in northeastern China" (PDF). Geological Bulletin of China 28 (10): 1369–1374.
- ↑ 3.0 3.1 Loewen, M.A.; Irmis, R.B.; Sertich, J.J.W.; Currie, P. J.; Sampson, S. D. (2013). Evans, David C, ed. "Tyrant Dinosaur Evolution Tracks the Rise and Fall of Late Cretaceous Oceans". PLoS ONE 8 (11): e79420. doi:10.1371/journal.pone.0079420.
