Mystery Gastropod Fossils from Romania

Salut! These pictures show gastropod fossils found in Romania. They are from a region that use to be the Sarmatic Sea which I think is Miocene in age (5-7 million years ago).

What their names are is a mystery to me.  So if there are any fossil detectives out there and you can solve this naming enigma... let me know. Mulţumesc!

Thanks to Stanca for the pictures.