Isachsen Formation
Stratigraphic range: Aptian ~120–112  Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Formation
Sub-units	Walker Island Member
Overlies	Christopher Formation
Location
Coordinates	76°06′N109°00′W / 76.1°N 109.0°W / 76.1; -109.0
Approximate paleocoordinates	71°30′N20°30′W / 71.5°N 20.5°W / 71.5; -20.5
Region	Northwest Territories, Nunavut
Country	Canada
Isachsen Formation (Canada) Show map of Canada Isachsen Formation (Nunavut) Show map of Nunavut

The Isachsen Formation is a geologic formation in the Northwest Territories and Nunavut. It preserves fossils of Polycotylidae indet., dating back to the Aptian stage of the Cretaceous period.

Contents

• See also
• References
• Further reading
• External links

See also

• List of fossiliferous stratigraphic units in the Northwest Territories
• List of fossiliferous stratigraphic units in Nunavut

References

Further reading

• M. J. Vavrek, B. C. Wilhelm, E. E. Maxwell and H. C. E. Larsson. 2014. Arctic plesiosaurs from the Lower Cretaceous of Melville Island, Nunavut, Canada. Cretaceous Research 50:273-281

External links

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 25 March 2022. Retrieved 17 December 2021.

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