Isachsen Formation

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.

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	76.1°N 109.0°W / 76.1; -109.0
Approximate paleocoordinates	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

See also

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