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

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

The oldest equatorial dinosaur in the world, and North America's oldest dinosaur, has been described in a new study. Dating ...

For years, scientists believed that dinosaurs first emerged in Gondwana—the southern portion of the ancient supercontinent ...

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

How and when did dinosaurs first emerge and spread across the planet more than 200 million years ago? That question has for ...

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

For decades, paleontologists have debated how and when dinosaurs emerged and spread across the planet more than 200 million ...

A multi-institution investigation in China has introduced the world to Archaeocursor asiaticus, and the research suggests an earlier dispersal event of ornithischians from Gondwana to Laurasia ...

Scientists suggest early Jurassic ornithischians migrated from Gondwana to East Asia, preceding armored dinosaurs.

This newly identified dinosaur species represents the oldest and most primitive type of ornithischian dinosaur found in Asia so far.