Among the many examples of agatized gastropods, from the Eocene layers of the Dakhla region of Morocco, that are appearing on the market, I found two pelecypod specimens. They are small, about an inch (2.54 cm) in diameter and appear to be the same species. I don't have any literature that can get me an ID down to even the species level but it appears that they belong to the Genus Astarte. The closest Subgenus I could possible winnow them down to could be Laevastarte but beyond that I would need to see the interior of the shells.
Specimen #1- Right valve
Specimen #2 - Left Valve