Sinankylosaurus
From Latin/Greek 'Sina' meaning 'China' or 'Chinese', Greek 'ankylos' meaning 'fused' or 'bent', and 'sauros' meaning 'lizard'; meaning 'Chinese fused lizard.'
Sinankylosaurus is a dubious dinosaur genus known from the Late Cretaceous Hongtuya Formation of China. The genus contains a single species, Sinankylosaurus zhuchengensis, known from a partial right ilium (a pelvic bone). This specimen was originally described as belonging to an ankylosaur, although later research has disputed this identification, noting the lack of anatomical characters uniting Sinankylosaurus with this group.
Under dispute
Sinankylosaurus zhuchengensis was named as an ankylosaur on a partial ilium (Wang and colleagues, 2020). Zheng and colleagues (2021) find no ankylosaur features in it, as the supposed acetabulum lacks a cup-like structure and peduncles and there is no preacetabular ridge, and consider it a nomen dubium and not an ankylosaur, without proposing another identity. It is placed at Dinosauria incertae sedis.
Species
Sinankylosaurus zhuchengensis Wang et al., 2020 Nomen dubium
Type species
Named for Zhucheng, the city in Shandong Province, China, where the holotype ilium was discovered.
- Holotype
- ZJZ-183 , Zucheng Dinosaur Culture Research Center
- Material
- Well-preserved right ilium approximately 65 cm long
- Horizon
- lower Hongtuya Formation, Campanian, Late Cretaceous , 83.6–72.2 million years ago
- Locality
- Zangjiazhuang, Shandong, China
References
- Wang, K. B.; Zhang, Y. X.; Chen, J.; Chen, S. Q.; Wang, P. Y. (2020). A new ankylosaurian from the Late Cretaceous strata of Zhucheng, Shandong Province. Geological Bulletin of China 39(7): 958-962. doi:10.12097/gbc.dztb-39-7-958 wang2020a
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Zheng, W.; Shibata, M.; Liao, C.-C.; Hattori, S.; Jin, D.; Jin, C.; Xu, X. (2021). First definitive ankylosaurian dinosaur from the Cretaceous of Jilin Province, northeastern China. Cretaceous Research 127: 104953. doi:10.1016/j.cretres.2021.104953
Finds no ankylosaur diagnostic features in the holotype ilium and considers Sinankylosaurus a nomen dubium and not an ankylosaur.
zheng2021b