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Western Interior Seaway

Canadian Fossil Discovery Centre2022

Canadian Fossil Discovery Centre

Canadian Fossil Discovery Centre
Morden, Canada

A map of North America as it looked in the Upper Cretaceous period. During the Cretaceous, two tectonic plates were in the process of subducting beneath the North American Plate. This caused the overlying land to warp and form a large back-arc basin. Ocean water gradually filled this basin, resulting in the Western Interior Seaway. Source: Wikimedia Commons.

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  • Title: Western Interior Seaway
  • Creator: Canadian Fossil Discovery Centre
  • Date Created: 2022
Canadian Fossil Discovery Centre

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