Chondrichthyans from the Pennsylvanian (Desmoinesian) Naco Formation of central Arizona. Journal of Vertebrate Paleontology, 24(2), 268–280
DOI: 10.1671/1978
Dentition of Deltodus angularis (Holocephali) Inferred from Associated Tooth Plates. Copeia, 2000(4), 1090–1096
Comparative Microscopic Dental Anatomy in the Petalodontida (Chondrichthyes, Elasmobranchii). Fieldiana Geology, 26, 1–42
A predator-prey relationship between sharks and cephalopods in the Late Paleozoic. In Boucot, A.J.(ed.), Evolutionary Paleobiology of Behavior and Coevolution, (Elsevier), Amsterdam: 189–192
Microscopic chondrichthyan remains from Pennsylvanian marine rocks of Ohio and adjacent areas. Unpublished PhD thesis, Ohio State University, Columbus, Ohio. 2 vols. 514pp.
Systematic relationships of petalodontiform chondrichthyans. In DUTRO, J. JR. and PFEFFERKORN, H. W. (Eds), Neuvième Congrès International de Stratigraphie et de Géologie du Carbonifère. Compte Rendu, 5: 523–541
The ichthyodorulite Euctenius from the Middle the Middle Pennsylvanian cannel coal of Linton, Ohio, identified as an intromittent organ of xenacanth sharks [Abstract]. Geological Society of America, Abstracts with Programs, 17(2): 95
Pennsylvanian shark-cephalopod predation: a case study. Lethaia, 17(3), 175–183
DOI: 10.1111/j.1502-3931.1984.tb01613.x
New occurrences of the petalodontiform chondrichthyan Megactenopetalus in the Pennsylvanian of Oklahoma and Kansas. Oklahoma Geology Notes, 40, 185–189
A presumed lower dentition and a spine of a Permian petalodontiform chondrichthyan, Megactenopetalus kaibabanus. Journal of Paleontology, 52(1), 55–60