St. John, O.H. & Worthen, A.H. (1875)
Palaeontolgoy of Illinois. Descriptions of fossil fishes.
Geological Survey of Illinois, 6, 245–488
St. John, O.H. & Worthen, A.H. (1883)
Descriptions of fossil fishes; a partial revision of the Cochliodonts and Psammodonts.
Geological Survey of Illinois, 7, 55–264