King R. E. (1931) The Geology of the Glass Mountains, Texas, Part II, Faunal summary and correlation of the Permian formations with description of Brachiopoda, The University of Texas Bulletin 3042, 1-245 |
Miller A. K., Youngquist W. (1949) American Permian nautiloids, Geological Society of America Memoir 41, 1-218 |
Yochelson E. L. (1956) Permian Gastropoda of the southwestern United States. 1. Euomphalacea, Trochonematacea, Pesudophoracea, Anomphalacea, Craspedostomatacea, and Platyceratacea, Bulletin of the American Museum of Natural History 110 3, 173-276 |
Batten R. L. (1958) Permian Gastropoda of the southwestern United States. 2. Pleurotomariacea: Portlockiellidae, Phymatopleuridae, and Eotomariidae, Bulletin of the American Museum of Natural History 114 2, 153-246 |
Yochelson E. L. (1960) Permian Gastropoda of the southwestern United States. 3. Bellerophontacea and Patellacea, Bulletin of the American Museum of Natural History 119 4, 208-293 |
Finks R. M. (1960) Late Paleozoic sponge faunas of the Texas region: The siliceous sponges, Bulletin of the American Museum of Natural History 120 1, 1-160 |
Cooper G. A., Grant R. E. (1977) Permian Brachiopods of West Texas, VI, Smithsonian Contributions to Paleobiology 32, 3161-3370 |
Fedorowski J. (1985) Diffingiina, a new suborder of the rugose corals from SW Texas, Acta Palaeontologica Polonica 30, 209-240 |
Fedorowski J. (1987) Upper Paleozoic rugose corals from southwestern Texas and adjacent areas: Gaptank Formation and Wolfcampian corals, Palaeontologia Polonica 48, 3-271 |
Erwin D. H. (1988) Permian Gastropoda of the southwestern United States: Subulitacea, Journal of Paleontology 62 1, 56-69 |
Batten R. L. (1989) Permian Gastropoda of the southwestern United States. 7. Pleurotomariacea: Eotomariidae, Lophospiriidae, Gosseletinidae, American Museum Novitates 2958, 1-64 |
Finks R. M. (1995) Some new genera of Paleozoic calcareous sponges, University of Kansas Paleontological Contributions 6, 1-9 |
Newell N. D., Boyd D.W. (1995) Pectinoid bivalves of the Permian-Triassic crisis, Bulletin of the American Museum of Natural History 227, 1-95 |
McRoberts C. A., Newell N.D. (2001) A new Permian myalinid genus, Elversella, of west Texas, American Museum Novitates 3311, 1-5 |
Finks R. M. (2010) The sponge family Guadalupiidae in the Texas Permian, Journal of Paleontology 84 5, 821-847 |