Batten, R. L. (1956). Some new pleurotomarian gastropods from the Permian of west Texas. Journal of the Washington Academy of Sciences. 46(2): 42−45.
Norwood, J. G., and Pratten, H. 1855. Notice of fossils from the Carboniferous Series of the western states, belonging to the genera Spirifer, Bellerophon, Pleurotomaria, Macrocheilus, Natica, and Loxonema, with descriptions of eight new characteristic species. Journal of the Academy of Natural Sciences of Philadelphia, Second Series, 3:71–77.
Yin, T. H., 1932. Gastropoda of the Penchi and Taiyuan Series of North China, Palaeontologica Sinica, Series B.