Simpson, George Gaylord (1937). „Notes on the Clark Fork, Upper Paleocene, fauna”. American Museum Novitates. 954. hdl:2246/2190.
Gunnell, G. F.; Bartels, W. S.; Gingerich, P. D.; Torre, V. (1992). „Wapiti Valley Faunas: Early and Middle Eocene Fossil Vertebrates from the North Fork of the Shoshone River, Park Country, Wyoming”. Contributions from the Museum of Paleontology, the University of Michigan. 28 (11): 247—287. hdl:2027.42/48547.
Simpson, George Gaylord (1937). „Notes on the Clark Fork, Upper Paleocene, fauna”. American Museum Novitates. 954. hdl:2246/2190.
Gunnell, G. F.; Bartels, W. S.; Gingerich, P. D.; Torre, V. (1992). „Wapiti Valley Faunas: Early and Middle Eocene Fossil Vertebrates from the North Fork of the Shoshone River, Park Country, Wyoming”. Contributions from the Museum of Paleontology, the University of Michigan. 28 (11): 247—287. hdl:2027.42/48547.