Crassispira premorra

Dall, W. H. 1889a. Reports on the results of dredgings, under the supervision of Alexander Agassiz, in the Gulf of Mexico (1877–78) and in the Caribbean Sea (1879–80), by the U. S. Coast Survey Steamer 'Blake,' Lieut.--Commander C. D. Sigsbee, U. S. N., and Commander J. R. Bartlett, U. S. N., commanding. XXIX.--Report on the Mollusca. Part II.--Gastropoda and Scaphopoda. Bulletin of the Museum of Comparative Zoology 18: 1–492, pls. 10–40.

Dall, W. H. 1889b. A preliminary catalogue of the shell-bearing marine mollusks and brachiopods of the southeastern coast of the United States, with illustrations of many of the species. Bulletin of the United States National Museum 37: 1–221, pls. 1–74.