Petaloconchus nigricans

Dall, W. H. 1884. On a collection of shells sent from Florida by Mr. Henry Hemphill. Proceedings of the United States National Museum 6(384): 318–342, pl. 10.

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.

Olsson, A. A., and A. Harbison. 1953. Pliocene Mollusca of Southern Florida, with special reference to those from North Saint Petersburg. Monographs of the Academy of Natural Sciences of Philadelphia 8: vii + 459, 65 pls.

Smith, M. 1945. East Coast Marine Shells. Edward Brothers, Ann Arbor, Michigan. vii + 314 pp.