230 Million-Year-Old Fossil From Wyoming Challenges Dinosaur Origin Theories
A chicken-sized dino, the oldest known in North America, has thrown a wrench in the widely accepted timeline of early dinosaur history.
Sioux City Journal22d
Hunting the past: Sioux Cityans to exhibit rare 'Hell Creek' dinosaur fossils at public museum
The Hell Creek Formation, one of the most fossil-rich deposits in the world, extends over parts of Montana, North Dakota, South Dakota and Wyoming. "For free, this is the best dinosaur exhibit ...
The Grand Junction Daily Sentinel12d
Dinosaurs roamed North America millions of years earlier than thought
Fossils identified as a new species after being discovered in Wyoming are estimated to be around 230 million years old.