Descriptions of fossil fishes; a partial revision of the Cochliodonts and Psammodonts. Geological Survey of Illinois, 7, 55–264
Stethacanthid elasmobranch remains from the Bear Gulch limestone (Namurian E2b) of Montana. American Museum Novitates, 2828 ,1–24

The morphology of Falcatus falcatus (ST. JOHN AND WORTHEN), a Mississippian stethacanthid chondrichthyan from the Bear Gulch Limestone of Montana. Journal of Vertebrate Paleontology, 5(1), 1–19
DOI: 10.1080/02724634.1985.10011842

Chondrichthyan life history styles as revealed by the 320 million years old Mississippian of Montana. Environmental Biology of Fishes, 27(1), 1–19
DOI: 10.1007/BF00004900

Fossilienatlas Fische. Verlag für Natur- und Heimatkunde Hans A. Baensch, Melle

Fish diversity of the Bear Gulch Limestone, Namurian, Lower Carboniferous of Montana, USA. Geobios, 32(2), 285–295
DOI: 10.1016/S0016-6995(99)80042-4
The braincase in Paleozoic symmoriiform and cladoselachian sharks. Bulletin of the American Museum of Natural History, 307, 1–122

The spine-brush complex in symmoriiform sharks (Chondrichthyes; Symmoriiformes), with comments on dorsal fin modularity. Journal of Vertebrate Paleontology, 29(1), 14–24
DOI: 10.1671/039.029.0130

Handbook of Paleoichthyology, Vol. 3D: Chondrichthyes Paleozoic Elasmobranchii: Teeth Verlag Dr. Friedrich Pfeil, pp. 168, 154 fig., 4 Tab.
Rise and diversification of chondrichthyans in the Paleozoic. Paleobiology, in press
DOI: 10.1017/pab.2024.1