Geology of North America, 1858, p. 33.
Represented by a tooth from the cretaceous of Cement Gulch, almost identical with the specimen described by Dr. Leidy from the cretaceous of Texas. (Cont. to Ext. Vert. Fauna, p. 300.)
[SUMMARY.]
MAMMALIA.
| Primates | 4 | |
| Carnivora | 2 | |
| Perissodactyla | 16 | |
| Artiodactyla (?) | 1 | |
| Amblypoda | 3 | |
| Rodentia | 1 | |
| — | 27 |
AVES.
| Incertæ sedis | 4 | |
| — | 4 |
REPTILIA.