original description
Olsson, A. A. (1961). Mollusks of the tropical eastern Pacific, particularly from the southern half of the Panamic-Pacific faunal province (Panama to Peru). Panamic-Pacific Pelecypoda. Paleontological Research Institution, Ithaca. 574 pp, 86 pl., available online at http://www.biodiversitylibrary.org/item/29909
page(s): 326, pl. 57 figs 7-7c [details]
original description
(of Mactra (Simomactra) hoffstetteri Cauquoin, 1969) Cauquoin M. (1969 ["'1968"]). Mollusques récoltés par M. Hoffstetter sur les côtes de l'Equateur et aux iles Galápagos. Mactridae. <em>Bulletin du Muséum National d'Histoire Naturelle.</em> ser. 2, 40(5): 1019-1030., available online at https://www.biodiversitylibrary.org/page/55344206#page/1057/mode/1up
page(s): 1021, textfig. 1 [details]
original description
(of Mactra (Mactra) williamsi S. S. Berry, 1960) Berry S.S. (1960). Notices of new eastern Pacific Mollusca.- IV. <em>Leaflets in Malacology.</em> 1(19): 115-122. [details]
context source (PeRMS)
Paredes, C.; Cardoso, F.; Santamaría, J.; Esplana, J.; Llaja, L. (2016). Lista anotada de los bivalvos marinos del Perú. <em>Revista peruana de biología.</em> 23(2), 127-150., available online at http://www.scielo.org.pe/scielo.php?script=sci_arttext&pid=S1727-99332016000200006 [details]
source of synonymy
Huber, M. (2010). <i>Compendium of bivalves. A full-color guide to 3,300 of the world's marine bivalves. A status on Bivalvia after 250 years of research</i>. Hackenheim: ConchBooks. 901 pp., 1 CD-ROM. (look up in IMIS) [details]
source of synonymy
Coan, E. V.; Valentich-Scott, P. (2012). Bivalve seashells of tropical West America. Marine bivalve mollusks from Baja California to northern Peru. 2 vols, 1258 pp. [details]
From editor or global species database