Oolitic

Russia, Republic of Sakha, Aldan river valley. Tiled, gray, greenish-gray dolostones with intercalations of clay and oolithic dolostones. Saturated with mineralized cylindrical burrows (diameter up to 1 centimeter) of worms (planolites and skolitos). Neoproterozoic - Cambrian.

Russia, Caucasus, Stavropol Territory, Kislovodsk, gorge of the river Berezovka. Limestones, dolostones, dolomitic siltstones. Limestones are yellowish-gray, cream, oolitic, bioclastic, massive, thick-plate. Baksanskaya series. Fossil: Psilothyris ullukolensis Mois., Septaliphoria guerassimovi Moiss., Pholadomya valangiensis Pict. et Camp., Modiola gillieroni Pict. et Camp., Hinnites renevieri Pict. et Camp., Nerinea upensis Pcel., N. subbaidarensis Pel., Euthymiceras sp. Lower Cretaceous. Berriasian. Valanginian.

Russia, Stavropol Territory, canyon of the river Dry Olkhovka. Limestones, limestones sandstones, oolitic limestones, interlayers of marls. Fossil: Thurmanniceras cf. thurmanni Pict., Phasianela personi Chaff., Purpuroidea longa Pcel., Grammatodon cabadinensis Mordv. Lower Cretaceous. Valanginian

Russia, Stavropol Territory, canyon of the river Olkhovka. Limestones, limestones sandstones, oolitic limestones, interlayers of marls. Fossil: Thurmanniceras cf. thurmanni Pict., Phasianela personi Chaff., Purpuroidea longa Pcel., Grammatodon cabadinensis Mordv. Lower Cretaceous. Valanginian

Russia, Stavropol Territory, canyon of the river Olkhovka. Limestones, limestones sandstones, oolitic limestones, interlayers of marls. Fossil: Thurmanniceras cf. thurmanni Pict., Phasianela personi Chaff., Purpuroidea longa Pcel., Grammatodon cabadinensis Mordv. Lower Cretaceous. Valanginian

Russia, Stavropol Territory, canyon of the river Dry Olkhovka. Limestones, limestones sandstones, oolitic limestones, interlayers of marls. Fossil: Thurmanniceras cf. thurmanni Pict., Phasianela personi Chaff., Purpuroidea longa Pcel., Grammatodon cabadinensis Mordv. Lower Cretaceous. Valanginian

Russia, Stavropol Territory, canyon of the river Dry Olkhovka. Limestones, limestones sandstones, oolitic limestones, interlayers of marls. Fossil: Thurmanniceras cf. thurmanni Pict., Phasianela personi Chaff., Purpuroidea longa Pcel., Grammatodon cabadinensis Mordv. Lower Cretaceous. Valanginian

Russia, Stavropol Territory, canyon of the river Alikonovka. Limestones, limestones sandstones, oolitic limestones, interlayers of marls. Fossil: Thurmanniceras cf. thurmanni Pict., Phasianela personi Chaff., Purpuroidea longa Pcel., Grammatodon cabadinensis Mordv. Lower Cretaceous. Valanginian

Russia, Karachay-Cherkess Republic, canyon of the river Alikonovka. Limestones, limestones sandstones, oolitic limestones, interlayers of marls. Fossil: Thurmanniceras cf. thurmanni Pict., Phasianela personi Chaff., Purpuroidea longa Pcel., Grammatodon cabadinensis Mordv. Lower Cretaceous. Valanginian

Russia, Karachay-Cherkess Republic, canyon of the river Alikonovka. Limestones, limestones sandstones, oolitic limestones, interlayers of marls. Fossil: Thurmanniceras cf. thurmanni Pict., Phasianela personi Chaff., Purpuroidea longa Pcel., Grammatodon cabadinensis Mordv. Lower Cretaceous. Valanginian