Explaining crocodiles in Wyoming

2 septiembre 2015

Fifty million years ago, the Cowboy State was crawling with crocodiles. Fossil records show that crocs lounged in the shade of palm trees from southwestern Wyoming to southern Canada during the Cretaceous and Eocene.  Exactly how the middle of the North American continent — far from the warming effects of the ocean — stayed so temperate even in winter months has long eluded scientists.