The Western Interior Seaway formed about 100 million years ago when the mountains that now define western North America lifted up as a result of tectonic forces. Those same forces flexed the land east ...

Trek across this interactive map, ... Explore North America. Publish Date: ... Travel to Monument Rocks to unearth the remains of fish that once lived in a vast inland sea that covered the Midwest.

These Maps Show How North America Was Formed Over 550 Million Years. By Rob Wile. 2012-07-20T16:49:00Z Share. Facebook Email X LinkedIn Copy link. An icon in the shape of ...

The deepest part of Lake Erie is about 210 feet. Lake Superior's deepest water is 1,332 feet, which is more than six times the depth of Lake Erie.

How Sea Otters Were Once Nearly Wiped Out in Western North America. 4 minute read. ... then it was likely one of the last individuals of the species to inhabit the inland waters and tributaries of ...

Situated a whopping 3,700 kilometers (2,342 miles) away from the Atlantic Ocean, it’s the farthest inland port in North America to serve oceangoing ships – and that’s not the only thing that ...

Some people consider the Great Plains of America to be "flyover country." The truth of that pejorative falls outside the realm of science. It is true, however, that 80 million years ago one could not ...