 | Cook, H.J., 1930. New rhinoceroses from the Pliocene of Colorado and Nebraska. Proceedings of the Denver Museum of Natural History 9 (4): 44-51
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| Gregory, W.K.; Cook, H.J., 1928. New material for the study of evolution: a series of primitive rhinoceros skulls (Trigonias) from the Lower Oligocene of Colorado. Proceedings of the Denver Museum of Natural History 8 (1): 3-32
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| Cook, H.J., 1927. A new rhinoceros of the genus Teleoceras from Colorado. Proceedings of the Denver Museum of Natural History 7 (1): 1-5
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| Cook, H.J., 1912. Notice of a new genus of rhinoceros from the lower Miocene. Science 35: 219-220
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| Cook, H.J., 1912. A new species of rhinoceros (Diceratherium loomisi) from the lower Miocene of Nebraska. Nebraska Geological Survey 7 (4): 29-32
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| Cook, H.J., 1912. A new genus and species of rhinoceros (Epiaphelops virgasectus) from the lower Miocene of Nebraska. Nebraska Geological Survey 7 (3): 21-22
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| Cook, H.J., 1909. A new genus of rhinoceros from Sioux County, Nebraska. Nebraska Geological Survey 3 (6): 245-248
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| Cook, H.J., 1908. A new rhinoceros from the lower Miocene of Nebraska. The American Naturalist, The Science Press, New York; XLII (500): 543-545, 2 figs.
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