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

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

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

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 ...

But this is where Ahvaytum may rewrite the origin story because it originates from the North American landmass, which once formed part of Laurasia. At roughly 230 million years old, it is comparable ...

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

This discovery challenges the long-held belief that dinosaurs originated exclusively in the southern supercontinent, Gondwana.

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

The fossil was unearthed in the Los Blanquitos Formation near Amblayo, in the north of Argentina. It dates to between 75 and ...

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

The researchers noted that Ahvaytum lived during a period known as the Carnian pluvial episode, characterized by significant ...