Researchers discovered Ahvaytum bahndooiveche fossils in Wyoming, revealing dinosaurs in Laurasia earlier than believed.

A chicken-sized dino, the oldest known in North America, has thrown a wrench in the widely accepted timeline of early ...

the time saw the beginning of the end for some of Earth’s largest species and the breakup of the supercontinent Pangea. Evidence of this biologically rich era can be found across the planet ...