Kimmeridgian

Russia, Caucasus, Karachay-Cherkess Republic, Kich-Malka river valley. Dolomitic sandy limestones, recrystallized stromatopore reefs. Fossil: Aspidoceras oegiri Opp., Limatula gerassimovi Pcel., Camptonecies grenieri Contej. Upper Jurassic. Oxfordian, Kimmeridgian.