Moskvoretskaya Formation

Moskvoretskaya Formation
Stratigraphic range: Bathonian ~168–167 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Sub-units	Meshchera Member
Underlies	Callovian and Oxfordian marine claystones
Overlies	Unconformably (about 150 Ma) overlying and infilling Middle Carboniferous limestone
Area	Kolomensky District, Moscow Oblast
Thickness	Variable
Lithology
Primary	Claystone, siltstone
Other	Sandstone
Location
Coordinates	55°12′N 38°48′E / 55.2°N 38.8°E / 55.2; 38.8
Approximate paleocoordinates	48°48′N 41°12′E / 48.8°N 41.2°E / 48.8; 41.2
Region	Moscow
Country	Russia
Extent	Localized in karstified limestones
Type section
Named for	Moskva River
Moskvoretskaya Formation (Russia) Show map of Russia Moskvoretskaya Formation (Moscow Oblast) Show map of Moscow Oblast

The Moskvoretskaya Formation is a Middle Jurassic (Bathonian stage) geologic formation in the European part of Russia. It consists of continental claystones, siltstones and sandstones deposited in karstified segments of underlying Middle Carboniferous limestone, that would have formed underground aquifers.

The formation is divided up into two members, the lower consists of dark clays to silts and is highly fossiliferous, while the upper member is sandy and lean in fossil content.^[1]

The remains of indeterminate tetanuran dinosaurs are known from the formation. As are fossil flora, fish and abundant remains of the turtle Heckerochelys romani,^[2] and various other fossils.^[3]