| Cope, E.D.; Matthew, W.D., 1915. Hitherto unpublished plates of tertiary mammalia and permian vertebrata prepared under the direction of Edward Drinker Cope for the US Geological Survey of the Territories with a description of the plates by William Diller Matthew. American Museum Natural History Monograph series no. 2: 1-2, pls. 125-144b
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| Cope, E.D., 1881. The systematic arrangement of the order Perissodactyla. Proceedings of the American Philosophical Society 19: 377-401, figs. 1-2, tables 1-3
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| Cope, E.D., 1881. On the extinct species of Rhinoceridae of North America and their allies. Bulletin of the United States Geological and Geographical Survey of the Territories (Department of the Interior) 5: 227-237
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| Cope, E.D., 1880. A new genus of Rhinocerontidae [sic]. The American Naturalist, Philadelphia; XIV (7): 540.
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