Williston, S.W. (1900)
Some fish teeth from the Kansas Cretaceous. Kansas University Quarterly, 9(1): 27–42, pl. 6–14.
Williston, S.W. (1900)
Cretaceous fishes. Selachians and Ptychodonts. University Geological Survey of Kansas, 6(2): 237–256, pl. 24–32.