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Calomys (Bensonomys) winklerorum
Taxonomy
Calomys (Bensonomys) winklerorum was named by Carranza-Castañeda and Walton (1992). Its type specimen is IGCU 7278, a tooth (left M1), and it is not a trace fossil. Its type locality is Rancho El Ocote (Medial), which is in a Hemphillian channel claystone/sandstone in the Rancho Viejo Beds Formation of Mexico.
Sister species lacking formal opinion data