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New Deep-Snouted Tyrannosaur Species Discovered in China

Asiatyrannus xui, unearthed at a construction site, reveals unique adaptations and migratory history.

  • The fossils were found in 2017 in Ganzhou City and date to the Late Cretaceous epoch, approximately 66-72 million years ago.
  • Asiatyrannus xui is a smaller tyrannosaur, estimated to be about 13 feet long, half the size of its relative Qianzhousaurus.
  • Distinctive features include a deeper snout and longer premaxilla, differing from other known tyrannosaurs.
  • The discovery supports theories of later tyrannosaurid migration to southeastern China from Laramidia, now part of North America.
  • Named after paleontologist Xu Xing, A. xui fills an ecological niche between large tyrannosaurs and smaller oviraptorosaurs.
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