Rare fossils found along the Colorado River 'give us a fuller picture of what life was like during the Cambrian period,' says ...

What does it take for soft-bodied animals, built to rot not to rock, to persist for 500 million years in the Grand Canyon?

(CNN) — Paleontologists have discovered remarkable fossils in the Grand Canyon that reveal fresh details about the emergence of complex life half a billion years ago. The newfound remains of fauna ...

On a dry, chilly morning in the Southern Colorado grasslands, Bruce Schumacher led a group of AmeriCorps volunteers across the narrow, shallow Purgatoire River to an out-of-place bump in the landscape ...