 | Lucas, F.A., 1901. A new rhinoceros, Trigonias osborni from the Miocene of South Dakota. Proceedings of the United States National Museum 23: 221-223
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| Leidy, J.; Lucas, F., 1896. Fossil vertebrates from the Alachua Clays of Florida (Rhinoceros). Transactions of the Wagner Free Institute of Science of Philadelphia 4: 41-48, pls. 1-8
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