Ceratogaulus a.k.a. Horned gopher
In Depth Further Reading - The evolution of fossoriality and the adaptive role of horns in the Mylagaulidae (Mammalia: Rodentia), Samantha S. B. Hopkins - 2005. – A new species of Ceratogaulus from Nebraska and the evolution of nasal horns in Mylagaulidae (Mammalia, Rodentia, Aplodontioidea). – Journal of Systematic Palaeontology. – Jonathan J. M. Calede … Read more