|
Stegoceras validus
|
|
|
Sahni, Ashok, 1972, The vertebrate Fauna of the Judith River formation, Montana, Bulletin of the American Museum of Natural History 147 (6), pp. 319-416
: 361
|
361 |
|
Stegoceras validus
|
|
|
Lambe L. M., 1902, New genera and species from the Belly River Series (mid-Cretaceous), Geological Survey of Canada Contributions to Canadian Palaeontology 3, pp. 25-81
: 68-69
|
68-69 |
