Isachsen Formation
The Isachsen Formation is a geologic formation in Nunavut. It preserves fossils of Polycotylidae indet., dating back to the Aptian stage of the Cretaceous period.
| Isachsen Formation | |
|---|---|
| Stratigraphic range: Aptian ~  | |
| Type | Formation | 
| Sub-units | Walker Island member | 
| Overlies | Christopher Formation | 
| Location | |
| Coordinates | 76.1°N 109.0°W | 
| Approximate paleocoordinates | 71.5°N 20.5°W | 
| Region | Nunavut | 
| Country | |
![]() Isachsen Formation (Canada) ![]() Isachsen Formation (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". Retrieved 17 December 2021. 
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