1. Lissamphibian origins: possible protolissamphibian from the Lower Permian of Oklahoma;BOLT;Science,1969
2. A trematopsid skull from the Lower Permian, and analysis of some characters of the dissorophoid (Amphibia: Labyrinthodontia) otic notch;BOLT;Fieldiana: Geology,1974
3. Dissorophoid relationships and ontogeny, and the origin of the Lissamphibia;BOLT;Journal of Palaeontology,1977a
4. Cacops (Amphibia: Labyrinthodontia) from the Fort Sill locality, Lower Permian of Oklahoma;BOLT;Fieldiana: Geology,1977b
5. Amphibamus grandiceps AS A JUVENILE DISSOROPHID: EVIDENCE AND IMPLICATIONS