On a collection of some Mollusca from Budhabalanga estuary, Odisha Author Gurumayum, S. D. text Records of the Zoological Survey of India 2019 119 1 55 59 journal article 10.26515/rzsi/v119/i1/2019/123277 2581-8686 10956119 13. Mactra grandis (Gmelin, 1791) 1791. Mactra grandis Gmelin , Syst. Nat. , ed. 13 : 3259, sp. 12 1977. Mactra (Mactra) grandis : Ray Contribution to the knowledge of Molluscan fauna of Maungmagan, Lower Burma : 134. Material examined: 2 valves Measurements: Length: 2.1cm , Height: 1.7cm Distribution: Orissa . Remarks: This species marine in its habitat.