Sinotyrannus
Sinotyrannus
- China ( Jiufotang Formation)
- Sinotyrannus kazuoensis
Sinotyrannus ( " Chinese tyrant ") was a genus of large tyrannosauroider dinosaur from the Lower Cretaceous of China. The only known way Sinotyrannus kazuoensis in 2009 by Ji et al. first described.
Features
The holotype of Sinotyrannus is preserved only in fragments. Reported are the front part of the skull and lower jaw, three vertebrae, some ribs, incomplete ilium, parts of the hand and a few other incomplete bone. The complete skull was probably about a meter long, the length of the entire animal appreciate Ji et al. nine to ten meters.
This Sinotyrannus was significantly larger than other Proceratosauriden and about as long as the later tyrannosaurids the Upper Cretaceous. Other estimates, however, amount to about six feet, which Sinotyrannus but still towered over other known Proceratosauriden.
System
The describer Ji et al. expressed the possibility that there had been at Sinotyrannus an early representative of the tyrannosaurids. More recent studies, however, place it in the Proceratosauridae, a family of mostly small to medium-sized predators within the superfamily Tyrannosauroidea.
Shortened cladogram by Loewen et al. (2013 ):
Guanlong
Sinotyrannus
Juratyrant