Moskvoretskaya Formation

Moskvoretskaya Formation
Stratigraphic range: Bathonian
~168–167 Ma

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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	55.2°N 38.8°E
Approximate paleocoordinates	48.8°N 41.2°E
Region	Moscow
Country	Russia
Extent	Localized in karstified limestones
Type section
Named for	Moskva River
	Moskvoretskaya Formation (Russia) Moskvoretskaya Formation (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]

Fossil content

Turtles

Turtles
Genus	Species	Location	Stratigraphic position	Material	Notes
Heckerochelys	H. romani	Moscow	Kolomna		A stem turtle outside both extant groups[2]

Therapsids

Therapsids
Genus	Species	Location	Stratigraphic position	Material	Notes
Morganucodontidae?	Gen. et sp. indet.			Femur	[4]

Crocodyliforms

Neosuchians
Genus	Species	Location	Stratigraphic position	Material	Notes
Neosuchia	Gen. et sp. indet.	Moscow	Kolomna	Vertebrae, teeth, dentary fragment	[1]

Dinosaurs

Dinosaurs
Genus	Species	Location	Stratigraphic position	Material	Notes
Tetanurae	Gen. et sp. indet.			Includes a partial skull, tooths and postcraneal elements	Formerly referred to Richardoestesia and Coelurosauria[1][5]

Fish

Ceratodus segnis
Ischyodus cf. egertoni[1]
Hybodus sp.[1]
Lepidotes sp.
Ptycholepis sp.
Dapediidae indet.

Flora

Other

Scyadopitys verticillata
cf. Gobiops sp.
?Cteniogenys sp.[1]
Caudata indet.

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References

Pashschenko et al., 2018
Sukhanov, 2006
Moskvoretskaya Formation at Fossilworks.org
Lopatin & Averianov, 2006
Alifanov & Sennikov, 2001

Bibliography

Pashchenko, D.I.; I.T. Kuzmin; A.G. Sennikov; P.P. Skutschas, and M.B. Efimov. 2018. On the Finding of Neosuchians (Neosuchia, Crocodyliformes) in the Middle Jurassic (Bathonian) Deposits of the Moscow Region. Paleontological Journal 52. 550–562. Accessed 2019-10-12. doi:10.1134/S0031030118050118 ISSN 0031-0301
Lopatin, A.V., and A.O. Averianov. 2006. Mesozoic mammals of Russia. 9th International Symposium on Mesozoic Terrestrial Ecosystems and Biota, Abstracts and Proceedings Volume 67-70.
Sukhanov, V.B. 2006. An archaic turtle, Heckerochelys romani gen. et sp. nov. from the Middle Jurassic of Moscow region, Russia. Fossil Turtle Research 1. 112-118. Accessed 2019-10-12.
Alifanov, V.R., and A.G. Sennikov. 2001. Discovery of dinosaur remains in a Moscow suburb. Doklady Earth Sciences 376. 1-3. Accessed 2019-10-12.