Larkinia grandis is a genus of saltwater clams in the family Arcidae, the ark clams.
Description Shell of Larkinia grandis can reach a diameter of about and a height of about . These shells are white, with 26 ribs and a dark, smooth periostracum.Angeline Myra Keen Sea Shells of Tropical West America: Marine Mollusks from Baja California to Peru Stanford University Press, 1971, s. 1064. .
Distribution This species is present in the North Pacific Ocean (Mexico, El Salvador, Peru, Gulf of California).
References