Amtosaurus

Amtosaurus Temporal range: Late Cretaceous, 90Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Skull
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Superorder:	Dinosauria
Order:	Ornithischia
Genus:	Amtosaurus Kurzanov & Tumanova, 1978
Species
A. magnus Kurzanov & Tumanova, 1978 (type)

Amtosaurus (/ˌɑːmtɵˈsɔrəs/; Kurzanov & Tumanova, 1978) is a genus of ornithischian dinosaur based on a fragmentary skull collected from the Upper Cretaceous Bayanshiree Svita Formation (Cenomanian-Santonian) of Mongolia and originally believed to represent an ankylosaurid. Hadrosaurid affinities have also been suggested. However, per Parish and Barrett, this specimen is too fragmentary to be reliably classified beyond an indeterminate ornithischian. A second species assigned to the genus, A. archibaldi, has become the basis of a valid anklyosaurid taxon, Bissektipelta.^[1]

References

• Kurzanov, S. M., & Tumanova, T. A. 1978. [On the structure on the endocranium in some ankylosaurs from Mongolia]. Paleontol. Zh. 1978:90-96.