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
Hay, O.P. (1902)
Bibliography and catalogue of the fossil Vertebrata of North America. Bulletin of the United States Geological and Geographical Survey of the Territories, 179, 1–868
Branson, E.B. (1906)
Fish remains from the Salem Limestone of Indiana. In Cumings E. R., Branson E. B., Beede, J. W. and Smith, E. A.(eds.), The fauna of the Salem Limestone of Indiana. Rep. Indiana Dept. Geol. Natur. Resources, 30: 1376–1394
Itano, W.M. (2022)
The Palaeozoic genus Psephodus (Chondrichthyes, Cochliodontiformes) and the transition from teeth to tooth plates in holocephalians. Scottish Journal of Geology, 58(2), in press
DOI: 10.1144/sjg2021-016