Open Paleo

Zhuchengtyrannus

Hone et al., 2011 JOO-chang-tie-RAN-us

Named after Zhucheng, Shandong Province, China (the type locality), combined with Latin tyrannus meaning 'tyrant'; translates as 'Zhucheng tyrant'

83.6–72.2 million years ago Campanian, Late Cretaceous
Late Cretaceous stages

Zhuchengtyrannus is a genus of tyrannosaurid theropod dinosaur from Asia, known from the Campanian stage of the Late Cretaceous of Shandong Province, China. It belongs to the subfamily Tyrannosaurinae, and contains a single species, Zhuchengtyrannus magnus.

Diagnosis

  1. Horizontal shelf on lateral surface of base of ascending process of maxilla
  2. Rounded notch in anterior margin of maxillary fenestra
  3. Ventral margin of antorbital fenestra lies well above ventral rim of antorbital fossa
  4. Anteroposterior length of maxillary fenestra more than half the distance between anterior margins of antorbital fossa and fenestra
  5. Absence of subcutaneous flange on posterodorsal part of jugal ramus of maxilla
  6. Absence of ventrally convex palatal shelf covering roots of posterior teeth in medial view

Species

Zhuchengtyrannus magnus Hone et al., 2011

Type species

From Latin 'magnus' meaning 'great', referring to the relatively large size of Zhuchengtyrannus among tyrannosaurids.

Holotype
ZCDM V0031 , Zhucheng Dinosaur Museum
Material
Nearly complete right maxilla and associated left dentary, both with teeth in situ
Horizon
Hongtuya Formation, Campanian, Late Cretaceous , 83.6–72.2 million years ago
Locality
Zangjiazhuang, Shandong, China

References

  1. Hone, D. W. E.; Wang, K.; Sullivan, C.; Zhao, X.; Chen, S.; Li, D.; Ji, S.; Ji, Q.; Xu, X. (2011). A new, large tyrannosaurine theropod from the Upper Cretaceous of China. Cretaceous Research 32(4): 495-503. Elsevier BV. doi:10.1016/j.cretres.2011.03.005 hone2011a