Jinbeisaurus
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Through China
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."

