Limestone

Russia, Caucasus, Karachay-Cherkess Republic, Bermamyt plateau. Limestones, sandy limestones, dolomitic limestones, dolostones, marl interbeds. Gerpegemskaya series. Fossil: Quenstedtoceras cf. brasili Douv., Perisphinctes sp., "Rhynchonella" spatica Douv., Zeilleria balkarensis Moiss., Z adygensis Moiss., Radulopecten subinaequicostatus Kas., R fibrosodichotomus Kas., Trigonia planulata Ag., Chlamys viminea Sow., Avicula argoviensis Moesch., Lima malkensus Pcel., Aviculoperna caucasica Pcel., Kosmoceras dagestanicum Kas., Lima duplicata Sow., Loboidothyris zeiteni Lor., Rhactorhynchia aff. corallina Leum., Lima tumida Roem., Aequipecten laurae Et., Ceratomya excentrica Ag., Kranaosphinetes sayni Riaz., Euaspidoceras oegiri Opp.  Middle-Upper Jurassic. Callovian. Oxfordian.