Batylykh Formation Explained

Batylykh Formation
Period:	Early Cretaceous
Age:	Early Cretaceous ?
Type:	Geological formation
Prilithology:	Claystone, siltstone, sandstone
Unitof:	Sangar Series
Underlies:	Eksenyakh Formation
Coordinates:	62.7°N 117.6°W
Paleocoordinates:	66.5°N 110.1°W
Region:	Yakutia
Extent:	Vilyuy River Basin

The Batylykh Formation is a geological formation in Yakutia, Russia. It is of an uncertain Early Cretaceous age, probably dating between the Berriasian and the Barremian. It is the oldest unit of the 1500m (4,900feet) thick Sangar Series within the Vilyuy syneclise. The mudstones, sandstones and shales of the formation were deposited in a fluvial to lacustrine environment.

Fossil content

The formation is best known for the Teete locality, which has revealed remains of numerous vertebrates, including dinosaurs and mammals.

Fossils recovered from the formation include:^[1]

Mammaliaformes

• Cryoharamiya^[2]
• cf. Sineleutherus sp.
• Docodonta indet.
• Gobiconodon
• Sangarotherium^[3]
• Xenocretosuchus
• Khorotherium
• Tritylodontidae^[4]

Reptiles

• Khurendukhosaurus
• Ankylosauria indet.
• Coelurosauria indet.
• Lacertilia indet.
• Macronaria indet.
• Mesochelydia indet.^[5]
• Stegosauria indet.^[6]
• Theropoda indet.

Amphibians

• Kulgeriherpeton ultimus^[7]
• Anura indet.
• Caudata indet.^[8]

Fish

• Chondrostei indet.
• Palaeoniscidae indet.

Insects

• Crenoptychoptera gronskayae^[9]
• Zhiganka comitans^[9]

Bivalves

• Bivalvia indet.

Gastropods

• Gastropoda indet.

Flora

• Podocarpus multesima
• Selaginella velata
• Stereisporites compactus
• S. congregatus
• Tripartina variabilis
• Ginkgocycadophytus sp.
• Klukisporites sp.
• Leiotriletes sp.
• Ophyoglossum sp.
• Piceapollenites sp.
• Picea sp.
• Pinus sp.
• Selaginella sp.
• Stereisporites sp.
• Pinaceae indet.

See also

• List of fossiliferous stratigraphic units in Russia
• Bukachacha Formation, contemporaneous fossiliferous formation of Zabaykalsky Krai

References

Bibliography

Further reading

• I. P. Tolmachoff. 1904. Neue Funde zur Geologie Sibiriens [New discoveries about the geology of Siberia]. Centralblatt für Mineralogie, Geologie und Paläontologie 1904(1):233-234

Notes and References

1. http://www.fossilworks.org/cgi-bin/bridge.pl?action=collectionSearch&formation=Batylykh&member=NULL_OR_EMPTY Batylykh Formation
2. Averianov et al., 2020
3. Averianov . Alexander O. . Martin . Thomas . Lopatin . Alexey V. . Skutschas . Pavel P. . Vitenko . Dmitry D. . Schellhorn . Rico . Kolosov . Petr N. . August 2023 . On the way from Asia to America: eutriconodontan mammals from the Early Cretaceous of Yakutia, Russia . The Science of Nature . en . 110 . 4 . 40 . 10.1007/s00114-023-01868-3 . 37530873 . 2023SciNa.110...40A . 0028-1042.
4. Lopatin & Agadjanian, 2008
5. Skutschas et al., 2020
6. Skutschas PP, Gvozdkova VA, Averianov AO, Lopatin AV, Martin T, Schellhorn R, Kolosov PN, Markova VD, Kolchanov VV, Grigoriev DV, Kuzmin IT, Vitenko DD . 6 . Wear patterns and dental functioning in an Early Cretaceous stegosaur from Yakutia, Eastern Russia . PLOS ONE . 16 . 3 . e0248163 . 2021 . 33730093 . 7968641 . 10.1371/journal.pone.0248163 . 2021PLoSO..1648163S . free .
7. Skutschas et al., 2018
8. Skutschas . Pavel P. . Kolchanov . Veniamin V. . Averianov . Alexander O. . Schellhorn . Rico . Kolosov . Petr N. . Jones . Marc E.H. . Martin . Thomas . August 2023 . The northernmost occurrence of non-karaurid salamanders (Lissamphibia, Caudata) in the Mesozoic . Cretaceous Research . 152 . en . 105686 . 10.1016/j.cretres.2023.105686. 2023CrRes.15205686S .
9. Lukashevich, 1995