Pterosoma planum is a species of marine gastropod in the family Carinariidae.
References
Keen, A. M. (1971). Sea Shells of Tropical West America. Marine mollusks from Baja California to Peru. ed. 2. Stanford University Press. xv, 1064 pp., 22 pls.
External links Lesson [R. P.. (1827). Description d'un nouveau genre de mollusques nucléobranches nommé Pterosoma. Mémoires de la Société d'Histoire Naturelle de Paris. (2) 3(3): 414-416]