Kakanaut Formation

Kakanaut Formation
Stratigraphic range: Maastrichtian ~70–66 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Underlies	Danian marine deposits
Overlies	Maastrichtian marine deposits
Thickness	1,000 m (3,300 ft)
Lithology
Primary	Sandstone
Other	Volcaniclastic
Location
Coordinates	62.9°N 177.1°E / 62.9; 177.1
Approximate paleocoordinates	75.7°N 179.0°E / 75.7; 179.0
Region	Chukotka Autonomous Okrug
Country	Russia
Type section
Named for	Kakanaut River
Kakanaut Formation (Russia)

The Kakanaut Formation is a geological formation in Siberia, whose strata date back to the Late Cretaceous (Maastrichtian). Dinosaur remains are among the fossils that have been recovered from the formation.^[1][2] The flora of the formation is relictual, containing some of the youngest remains of the extinct plant orders Bennettitales and Czekanowskiales.^[3][4]

Fossil content

• Troodon cf. formosus
• Ankylosauria indet.
• Dinosauria indet.
• Dromaeosauridae indet.
• Hadrosauridae indet.
• Neoceratopsia indet.
• Ornithopoda indet.
• Prismatoolithidae indet.
• Spheroolithidae indet.
• Theropoda indet.
• Tyrannosauridae indet.
• ?Aves indet.

See also

• List of dinosaur-bearing rock formations
• List of fossiliferous stratigraphic units in Russia

References

1. Weishampel et al., 2004, pp.593-600
2. Godefroit et al., 2009
3. Gnilovskaya, Anastasia A.; Golovneva, Lina B. (February 2018). "The Late Cretaceous Pterophyllum (Bennettitales) in the North-East of Russia". Cretaceous Research. 82: 56–63. Bibcode:2018CrRes..82...56G. doi:10.1016/j.cretres.2017.09.013.
4. Zolina, Anastasia; Golovneva, Lina; Nosova, Natalya; Grabovskiy, Alexander (2020-12-01). "A new species of Phoenicopsis (Leptostrobales) from the Maastrichtian–Danian of Chukotka, Russia". Geobios. 63: 67–75. Bibcode:2020Geobi..63...67Z. doi:10.1016/j.geobios.2020.09.002. ISSN 0016-6995. S2CID 228928283.

Bibliography

• Godefroit, P.; Golovneva, L.; Shchepetov, S.; García, G.; Alekseev, P. (2009), "The last polar dinosaurs: high diversity of latest Cretaceous arctic dinosaurs in Russia", Naturwissenschaften, 96 (4): 495–501, Bibcode:2009NW.....96..495G, doi:10.1007/s00114-008-0499-0, PMID 19089398, retrieved 2019-03-29
• Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21