A newfound "chicken-size" dinosaur, recently unearthed in Wyoming, changes what paleontologists thought they knew about how dinosaurs spread across the globe.

With a recent radioisotopic analysis of the fossil specimens dating the remains to around 230 million years old, this tiny 'terrible lizard' named Ahvaytum bahndooiveche is now the oldest-known dinosaur from Laurasia, the Northern Hemisphere land mass of the late Paleozoic supercontinent Pangea.

Learn more about this newly named dinosaur and how it's discovery sheds light on dinosaur evolution.

In an extraordinary paleontological discovery, scientists have uncovered a remarkably well-preserved dinosaur face fossil that includes intact skin. This find provides an unprecedented look into the appearance and biology of these ancient creatures.

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

Dinosaurs inhabited the Northern Hemisphere millions of years earlier than scientists previously thought, according to the new research.

Dinosaurs, the colossal creatures that dominated the Earth millions of years ago, have long fascinated scientists and the public alike. Each new discovery not only ignites imaginations but also deepens our understanding of these prehistoric giants.

A newly discovered dinosaur, uncovered by UW-Madison paleontologists, is reshaping the understanding of prehistoric reptiles.