Jinbeisaurus

Jinbeisaurus (meaning "northern Shanxi Province lizard" after Shanxi Province in China) is a genus of tyrannosauroid dinosaur from the Upper Cretaceous Huiquanpu Formation from Shanxi Province in China. The type and only species is Jinbeisaurus wangi. It is the first non-avian theropod known from Shanxi.[1] Analysis of the specimen indicates that Jinbeisaurus is more derived than related tyrannosauroids such as Xiongguanlong and phylogenetically more advanced than Suskityrannus, to which it has been compared.

Jinbeisaurus
Temporal range: Late Cretaceous,
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade: Theropoda
Clade: Tyrannoraptora
Superfamily: †Tyrannosauroidea
Clade: †Pantyrannosauria
Genus: †Jinbeisaurus
Wu et al., 2019
Type species
†Jinbeisaurus wangi
Wu et al., 2019

Jinbeisaurus was originally seen as a juvenile specimen of Tarbosaurus.

Description

It is known from holotype specimen SMG V0003, including a "pair of maxillae (nearly complete right bone and incomplete left bone) and an incomplete right dentary, associated with two cervical centra, five dorsal centra, and an incomplete right pubis." It can be distinguished from other tyrannosaurs by "a broad interfenestral strut, a deep fossa on the broad base of the septum between the promaxillary recess and maxillary antrum, a low position of the dorsal row of dentary foramina, a similar number of denticles per unit length on both the mesial and distal carinae of the upper and lower teeth, and an acute angle of about 70 degrees between the posterior process of the foot and the shaft of the pubis."

See also

References
  1. Wu Xiao-chun; Shi Jian-Ru; Dong Li-Yang; Thomas D. Carr; Yi Jian; Xu Shi-Chao (2019). "A new tyrannosauroid from the Upper Cretaceous of Shanxi, China". Cretaceous Research. 108: Article 104357. doi:10.1016/j.cretres.2019.104357.


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