Sinankylosaurus


Sinankylosaurus is a dubious genus of dinosaurs, originally described as an ankylosaur, from the Late Cretaceous Hongtuya Formation of Shandong, China. The genus contains a single species, Sinankylosaurus zhuchengensis, known from a nearly complete right ilium.

Discovery and naming

The holotype specimen, ZJZ-183, was discovered in the Hongtuya Formation in Zhucheng, Shandong Province, China. The fossil, a partial right ilium, was described in 2020 as belonging to an ankylosaur of uncertain affinities.
In a 2021 publication, Zheng et al. deemed Sinankylosaurus a nomen dubium with no anatomical characters uniting it with the Ankylosauria.

Paleoecology

Sinankylosaurus is known from the Hongtuya Formation, part of the Wangshi Group of southern China. Other dinosaurs from this group include ceratopsians, the large hadrosaurid Shantungosaurus, the titanosaur Zhuchengtitan, the tyrannosaurid Zhuchengtyrannus, and the oviraptorosaur Anomalipes.