Lohman, K.E. & Andrews, G.W. (1968). Late Eocene nonmarine diatoms from the Beaver Divide Area, Fremont County, Wyoming. Geological Survey Professional Paper, Contributions to Paleontology, (593-E): E1-E26, pls. 1-2
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Lohman, K.E. & Andrews, G.W.
1968
Late Eocene nonmarine diatoms from the Beaver Divide Area, Fremont County, Wyoming.
Geological Survey Professional Paper, Contributions to Paleontology