Bayannurosaurus

Bayannurosaurus is a non-hadrosauriform ankylopollexian ornithopod described in 2018 by Xu Xing. It lived during the early Aptian period, being found in the Bayin-Gobi Formation of China.[1] The genus includes the type species Bayannurosaurus perfectus. A phylogenetic analysis of Bayannurosaurus indicates that it is more derived than Hypselospinus, yet less derived than Ouranosaurus and just outside of the Hadrosauriformes. It had a skull length of 80cm, making it a mid-sized iguanodontid.[1] By comparison, Ouranosaurus had a 67cm long skull, and a length of 7 to 8.3 meters. Though inexact, if this is used as a comparison to scale, Bayannurosaurus would be 8.3 to 10 meters long. The genus name Bayannurosaurus comes from Bayannur, the area where it was found, while the species name perfectus comes from the "perfect" preservation of the holotype specimen. [1]

Bayannurosaurus
Temporal range: Aptian,
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: †Ornithischia
Clade: †Ornithopoda
Clade: †Styracosterna
Genus: †Bayannurosaurus
Xu et al, 2018
Type species
†Bayannurosaurus perfectus
Xu et al, 2018

See also

References
  1. Xu, Xing; Tan, Qingwei; Gao, Yilong; Bao, Zhiqiang; Yin, Zhigang; Guo, Bin; Wang, Junyou; Tan, Lin; Zhang, Yuguang; Xing, Hai (2018). "A large-sized basal ankylopollexian from East Asia, shedding light on early biogeographic history of Iguanodontia". Science Bulletin. 63 (9): 556–563. Bibcode:2018SciBu..63..556X. doi:10.1016/j.scib.2018.03.016.


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