This mentioned taxonomy is an attempt to make an conclusive assignment from the different classifications of various scientists. Because the taxonomy may change due to the latest investigative methods and other findings, our map is a guide only.
W. W. Korth, 2014 - Rodents (Mammalia) from the Whitneyan (Middle Oligocene) Cedar Pass Fauna of South Dakota - Annals of Carnegie Museum (82), 373-398 (journal article, English)
W. W. Korth, 2007 - Geomyoid rodents (Mammalia) from the Ridgeview local fauna, early-Early Arikareean (Late Oligocene) of western Nebraska - Annals of Carnegie Museum (76), 177-201 (journal article, English)
J. H. Wahlert, 1984 - Kirkomys, a new florentiamyid (Rodentia, Geomyoidea) from the Whitneyan of Sioux County, Nebraska - American Museum Novitates (2793), - (journal article, English)
A. E. Wood, 1937 - The Mammalian Fauna of the White River Oligocene: Part II. Rodentia - Transactions of the American Philosophical Society (28), 155-269 (journal article, English)