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Terms in this set (5)
Were temperatures during the Mesozoic Era was always higher or lower than today?
Explain the changes of sea level from Triassic to Cretaceous.
Sea level started out low in the Triassic, but gradually became higher and higher by the time of dinosaur extinction at the end of the Cretaceous.
What split the North America continent into two land masses?
Western Interior Seaway
After the split of North America, which two sides remain?
West and East
When did the Western Interior Seaway split the North America continent into two land masses?
Mid- to late Cretaceous
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