Fossilized footprints and tracks dating back 50 million years ago discovered at the John Day Fossil Beds National Monument ...

The federal agency reported that “fossil track specialist” Conner Bennett led other scientists in utilizing 3D imaging ...

This time period took place 359 to 299 million years ago. 3 min read The Carboniferous period, part of the late Paleozoic era, takes its name from large underground coal deposits that date to it.

Fossilized footprints and tracks dating back 50 million years ... time period in North America," according to a news release. Cat-like predator (approximately 29 million years old): One set ...