Shells reveal tropical heat in American West 95 million years ago - Futurity

Oyster shell fossils show the American West was once as hot as today's tropics. "Imagine the climate of Bali, Indonesia, in places like Utah or Wyoming."

The shallow sea that covered much of western North America 95 million years ago was as warm as today’s tropics, according to a new study that used fossil oyster shells as paleothermometers. The stud… [+5918 chars]

full article...