Mactra

We found some large clams, of the species Mactra solidissima, which the storm had torn up from the bottom, and cast ashore.

Cape Cod 1865

(_Mactra edulis_) and several species of limpet (_Patellae_) help out their often scanty larder.

The Land of Fire A Tale of Adventure Mayne Reid 1850

_Donax_, _Venus_, and _Mactra_, that are so common on flat sandy shores.

The Cruise of the Betsey or, A Summer Ramble Among the Fossiliferous Deposits of the Hebrides. With Rambles of a Geologist or, Ten Thousand Miles Over the Fossiliferous Deposits of Scotland Hugh Miller 1829

I found one stone on the top of the bank, of a dark gray color, shaped exactly like a giant clam (Mactra solidissima), and of the same size; and, what was more remarkable, one half of the outside had shelled off and lay near it, of the same form and depth with one of the valves of this clam, while the other half was loose, leaving a solid core of a darker color within it.

Cape Cod 1865

_Mytilus edule_, _Astarte danmoniensis_ (_sulcata_), and _Astarte compressa_, with a _Mactra_, _Artemis_, and _Tellina_. [

The Cruise of the Betsey or, A Summer Ramble Among the Fossiliferous Deposits of the Hebrides. With Rambles of a Geologist or, Ten Thousand Miles Over the Fossiliferous Deposits of Scotland Hugh Miller 1829