Annuliconcha spinosa Astafieva-Urbaitis, 1978
VRW-2, Planina pod Golico, the western Southern Karavanks.
Auernig Formation, upper (Gzhelian) part.
External mold of left valve. The specimen has been lit in a way to give the impression of a convex shell exterior instead of a concave mold and the image mirrored for proper results. Same effect would be achieved by depicting a plaster cast. USMJ 849.