The Cordilleran ice sheet was a major ice sheet that periodically covered large parts of North America during glacial periods over the last ~ 2.6 million years.
Cordilleran Ice Sheet dates back 4 million years.
Create a short claim.
Cordilleran Ice Sheet dates back 4 million years.
Create a short claim.
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Cordilleran Ice Sheet dates back 4 million years.
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