1. Die Trias von Albanian;Arthaber;Beiträge zur paläontologie und geologie Österreich-Ungarns und des Orients,1911
2. The Permo-Carboniferous ammonoids of the Glass Mountains, West Texas, and their stratigraphical significance;Böse;Univ. Tex. Bull.,1919
3. Middle Permian Cephalopoda from Texas and New Mexico;Clifton;J. Paleontol.,1946
4. Sponges, Brachiopoda, Pelecypoda, and Scaphopoda. Permian fauna at El Antimonio, western Sonora, Mexico;Cooper;Smithsonian Misc. Collect.,1953