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- Author(s):
- Cope, E. D. (Edward Drinker), 1840-1897, author
- Publication:
- [Philadelphia?] : [publisher not identified], [1886?]
- Subject(s):
- Anura -- classification
Reptiles -- classification
Iguanas -- classification
- Author(s):
- Coues, Elliott, 1842-1899, author
- Publication:
- [Washington, D.C.] : [U.S. Geological Survey], [1875]
- Subject(s):
- Reptiles -- classification
Amphibians -- classification
Arizona
- Author(s):
- Yarrow, H. C. (Harry Crécy), 1840-1929
- Publication:
- Washington : G.P.O., 1878
- Subject(s):
- Fossils
Reptiles -- classification
Amphibians -- classification
California
Arizona
Nevada
- Author(s):
- Cope, E. D. (Edward Drinker), 1840-1897
- Publication:
- [Philadelphia? : American Philosophical Society, 1878]
- Subject(s):
- Fossils
Reptiles -- classification
Amphibians -- classification
Geological Phenomena
Texas