New and little known Paleozoic and Mesozoic fishes. Journal of the Academy of Natural Sciences Philadelphia, Series 2, 9, 427–448
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
A fossil shark in Nebraska. Underwater Naturalist, 6(4), 29–30
Paleontology, paleobotany and facies characteristics of a Pennsylvanian delta in southeastern Nebraska. Unpubl. Ph.D. thesis, Univ. Texas, Austin, Texas: 393 pp.
New evidence on the nature of the jaw suspension in Palaeozoic anacanthous sharks. Palaeontology, 18(2), 333–341
Cobelodus aculeatus (Cope), an anacanthous shark from Pennsylvanian black shales of North America. Palaeontographica, Abt. A, 154, 107–157
Stethacanthid elasmobranch remains from the Bear Gulch limestone (Namurian E2b) of Montana. American Museum Novitates, 2828 ,1–24
Microscopic chondrichthyan remains from Pennsylvanian marine rocks of Ohio and adjacent areas. Unpublished PhD thesis, Ohio State University, Columbus, Ohio. 2 vols. 514pp.
The braincase in Paleozoic symmoriiform and cladoselachian sharks. Bulletin of the American Museum of Natural History, 307, 1–122
Reconstruction of fossil shark ventilation systems based on gill arch morphology and evolutionary implications [Abstract]. Journal of Vertebrate Paleontology, 29(Supplement to Number 3), 191A
Handbook of Paleoichthyology, Vol. 3D: Chondrichthyes Paleozoic Elasmobranchii: Teeth Verlag Dr. Friedrich Pfeil, pp. 168, 154 fig., 4 Tab.
Paleozoic fishes of New Mexico: a review. New Mexico Museum of Natural History and Science, Bulletin, 68, 51–64
The Palaeozoic assembly of the holocephalan body plan far preceded post-Cretaceous radiations into the ocean depths. Proceedings of the Royal Society B-Biological Sciences, 291(2033), Article 20241824
DOI: 10.1098/rspb.2024.1824
Rise and diversification of chondrichthyans in the Paleozoic. Paleobiology, in press
DOI: 10.1017/pab.2024.1
