Journal article
Report on the Vertebrate Paleontology of Colorado
Citation
Cope, E. D. (1875). Report on the Vertebrate Paleontology of Colorado. United States Geological Survey of the Territories 429-533.
Cited by genera
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Cionodon
Fuller redescription; corrects the original spelling "Cinodon" (a proofreader's error) to Cionodon. Places the material at one of two localities in Colorado "not many miles apart", neither named.
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Polyonax
Provides a fuller description of Polyonax mortuarius than the original 1874 notice. Places the material at one of two localities in Colorado "not many miles apart", neither of them named.