Gobisaurus, and the presence of cranial sculpting in Shamosaurus, but not in Gobisaurus. The last difference was denied by Arbour who concluded that the degree of sculpting was roughly the same. Shamosaurus had a rather flat skull. The upper beak was sharp and obliquely appending to the front. The beak lacked any teeth. The jaw joint was located far behind the level of the eye socket. The occipital condyle, and with it the entire head, was obliquely directed to below. A secondary palate was present. The armour of Shamosaurus contained two cervical halfrings with six segments each, protecting the neck. Also keeled osteoderms and flat oval scutes were present. Phylogeny Tumanova placed Shamosaurus in the Ankylosauridae. She also named a Shamosaurinae, a group of basal ankylosaurids. In 2014, Arbour recovered an evolutionary tree in which Shamosaurus was the sister species of Gobisaurus. See also Timeline of ankylosaur research Notes References Matthew K. Vickaryous, Anthony P. Russell, Philip J. Currie, and Xi-Jin Zhao. 2001. A new ankylosaurid (Dinosauria: Ankylosauria) from the Lower Cretaceous of China, with comments on ankylosaurian relationships. Canadian Journal of Earth Sciences/Rev. can. sci. Terre 38(12):1767-1780. External links Shamosaurus in the Dino Directory Ankylosaurids Early Cretaceous dinosaurs of Asia Fossils of Mongolia Fossil taxa described in 1983 Ornithischian genera