World Register of Marine Species (WoRMS)
MolluscaBase eds. (2026). MolluscaBase. Mactra opposita Reeve, 1854. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=216453 on 2026-08-30
Reeve, L. A. (1854). Monograph of the genus Mactra. In: Conchologia Iconica, or, illustrations of the shells of molluscous animals, vol. 8, pl. 1-21 and unpaginated text. L. Reeve & Co., London. [stated dates: pl. 2-5, March 1854; pl. 1, 6-14, April 1854; pl. 15-21, May 1854].
Deshayes, G. P. (1855). Descriptions of new species of shells, from the collection of Hugh Cuming, Esq. Proceedings of the Zoological Society of London. 22 (1854): 62–72.