1. Second contribution to the history of the vertebrata of the Permian formation of Texas: figures Author(s): Cope, E. D. (Edward Drinker), 1840-1897, author Publication: [Philadelphia?] : [publisher not identified], 1881 Subject(s): PaleontologyVertebratesTexas
2. Report upon vertebrate fossils discovered in New Mexico: with descriptions of new species Author(s): Geographical Surveys West of the 100th Meridian (U.S.) Publication: Washington : Government Printing Office, 1874 Subject(s): VertebratesFossilsPaleontologyNew Mexico
3. Contributions to the history of the vertebrata of the Lower Eocene of Wyoming and New Mexico made during 1881 Author(s): Cope, E. D. (Edward Drinker), 1840-1897, author Publication: [Philadelphia?] : [publisher not identified], [1882?] Subject(s): VertebratesPaleontologyWyomingNew Mexico
