basis of recordKeen, 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.[details]
additional sourceParedes C. & Cardoso F. 2007. La Familia Calyptraeidae en el Perú (Gastropoda:
Caenogastropoda). Revista Peruana de Biología, número especial 13(3): 177-184, available online athttp://www.scielo.org.pe/pdf/rpb/v13n3/v13n03a05.pdf[details]
Present Inaccurate Introduced: alien Containing type locality