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Marine to onshore vertebrates in the Lower Permian of Kansas and their paleoenvironmental implications. The University of Kansas Paleontological Contributions, 113, 1–18
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Deformed xenacanthodiid shark teeth from the Permian of Texas. In Martin, J. E., and Ostrander, G. E. (Eds.), Papers in Vertebrate Paleontology Honoring Morton Green. Dakoterra, 3: 22–27
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The Arroyo Formation (Leonardian: Lower Permian) and Its Vertebrate Fossils. Texas Memorial Museum Bulletin, 35: 30pp
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Vertebrate Microfossils from the Lueders Formation, Albany Group, and the faunal transition from the Wichita Group into the Clear Fork Group, Lower Permian of Texas. Modern Geology, 20, 371–382
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Dentitions of Barbclabornia (new genus, Chondrichthyes: Xenacanthiformes) from the upper Palaeozoic of North America. Mitteilungen aus dem Museum für Naturkunde in Berlin, Geowissenschaftliche Reihe, 6, 125–160
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Dentitions of Barbclabornia (new genus, Chondrichthyes: Xenacanthiformes) from the upper Palaeozoic of North America. Mitteilungen aus dem Museum für Naturkunde in Berlin, Geowissenschaftliche Reihe, 6, 125–160
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New specimens of xenacanth and hybodont sharks (Elasmobranchii: Xenacanthida and Hybodontoidea) from the Lower Permian of southwestern Oklahoma. Oklahoma Geology Notes, 63(4), 136–147
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An unusual tricuspid chondrichthyan tooth from the Lower Permian of Texas, USA. Revista Brasileira de Paleontologia, 8(2), 159–164
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Underdeveloped and unusual xenacanth shark teeth from the Lower Permian of Texas. Proceedings of the South Dakota Academy of Science, 84, 215– 223
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Lower Permian Freshwater Sharks and Fishes of Texas and Oklahoma. published by the author himself, 118pp
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Stable and radiogenic isotope analyses on shark teeth from the Early to the Middle Permian (Sakmarian–Roadian) of the southwestern USA. Historical Biology, 26(6), 710–727
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