answersLogoWhite

0

The dominant era of the Interior Plains, a region in North America, is primarily the Cretaceous period, which lasted from about 145 to 66 million years ago. During this time, the area was covered by a vast inland sea, leading to the deposition of sedimentary rocks rich in fossils. This geological history has significantly shaped the landscape and ecology of the region today. The plains are characterized by their flat terrain and fertile soil, making them vital for agriculture.

User Avatar

AnswerBot

4mo ago

What else can I help you with?