| Group: | Dinosauria - Ankylosauria |
| Original Specimen Location: | AMNH |
| Specimen Number: | AMNH 5214 |
| Age: | Late Cretaceous |
| Where Found: | Montana |
| Date Found: | 1906 |
| Size: | 3 |
| Original Material: | |
| Source: | RCI |
| Type: | Skull |
| 3d Scan: | no |
Ankylosaurus magniventris is the stereotypical ankylosaurid dinosaur, and the largest of the family. Like the other members, A. magniventris was covered in dermal, horn-like armour plating, resembling a giant, reptilian armadillo. Unlike the older Euoplocephalus, Ankylosaurus had smoother scutes and came in at a length of 8m, including the tail and posterior club. Living in the late Cretaceous right up until the K-T boundary, this tetrapod was a herbivorous contemporary of Tyrannosaurus rex and Triceratops horridus.
Type Specimen: AMNH 5895 at the American Museum of Natural History in New York.
Brown, B. (1908). The Ankylosauridae, a new family of armored dinosaurs from the Upper Cretaceous. Bulletin of the American Museum of Natural History 24, pp. 187–201.
Locality: Hell Creek Formation, Montana, USA.
Carpenter, K. (2004). Redescription of Ankylosaurus magniventris Brown 1908 (Ankylosauridae) from the Upper Cretaceous of the Western Interior of North America. Canadian Journal of Earth Sciences, Vol. 41, Iss. 8, pp. 961-986.
Vickaryous, MK; Maryanska, T; and Weishampel, DB. (2004). The Dinosauria (2nd edition). Berkeley: University of California Press.
Carpenter, K. (2001). Phylogenetic analysis of the Ankylosauria. The Armored Dinosaurs. Bloomington: Indiana University Press.