References
- 1892 . Records of the Australian Museum , ii August : 24 – 24 .
- Bull. U.S. Geol. Surv. Territ , iii 808 – 808 .
- Zittel, Handb. Palæont. , iii 276 – 276 . Nicholson & Lydekker, Palæont. vol. ii. p. 996
- E. D. Cope, Rep. U.S. Geol. Surv. Territ. , iii 73 – 79 . with plates.