Good morning everyone!
I have some bivalves found in dark marl erratic boulders of Klaipeda district (western Lithuania) and I hardly can find information about two specimens I show here in the photos.
The first looks like pholadomyoid (oblong and with radial ridges) and the other looks like arcid or cardiid (it has rays in the lower edge of shell).
Please help to identify genera of these two bivalves if you could.
Best Regards
Domas