Fossil specimen of the bivalve *Mercenaria mercenaria* from the Quaternary of St. Mary's County, Maryland (PRI 76728). Specimen is from the collections of the [Paleontological Research Institution](http://www.priweb.org), Ithaca, New York. Width of specimen is approximately 10 cm. Model by Emily Hauf. Click [here](https://sketchfab.com/models/9dd5b684684041ee84a8dfb44607c4bf) for a view showing the interior and exterior of a single valve.