Rangia cuneata

Rangia cuneata
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Venerida
Family:	Mactridae
Genus:	Rangia
Species:	R. cuneata
Binomial name
Rangia cuneata (G. B. Sowerby I, 1832)
Synonyms [1]
Gnathodon cuneatus G. B. Sowerby I, 1832 Gnathodon cuneatus nasutus Dall, 1884 Gnathodon nasutus Dall, 1884 Rangia cyrenoides Des Moulins, 1832

Rangia cuneata or Atlantic rangia, also known as wedge clam, gulf wedge clam, common rangia, and cocktail clam, is a mollusc native to the Gulf of Mexico. It is an oval clam with a body length of up to 5cm, living from the intertidal zone to depths of 124 meters. ^[2] It is edible and is harvested for food in Mexico, and has been so since pre-Hispanic times. ^[3]

• 
  Right valve
• 
  Left valve

Invasive species

Atlantic rangia have been documented as an invasive species in the US North Atlantic coast, Belgium (Antwerp), Baltic Sea ^[4] , and Norway ^[5] . They was likely introduced with oyster shipments or as larvae though ballast water ^[4] .

References

1. Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O, eds. (2021). "Rangia cuneata (G. B. Sowerby I, 1832)". MolluscaBase. World Register of Marine Species . Retrieved 16 August 2021.
2. "Rangia cuneata". SeaLifeBase. Retrieved 2020-01-24.
3. Wakida-Kusunoki, Armando T. & Clyde L. MacKenzie, Jr (2004). "Rangia and marsh clams, Rangia cuneata, R. flexuosa, and Polymesoda caroliniana, in Eastern México: Distribution, biology and ecology, and historical fisheries" (PDF). Marine Fisheries Review. 66 (3): 13–20.
4. "Rangia cuneata". National Exotic Marine and Estuarine Species Information System. Retrieved 2020-01-24.
5. "Flere nye fremmedarter oppdaget i Norge - varme somre gir dem en oppsving". NRK.no. NRK. August 6, 2025..