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

In a study published in the Zoological Journal of the Linnean Society, researchers described a previously unknown, chicken-sized dinosaur species named Ahvaytum bahndooiveche. The description of ...

Disney’s “Dinosaur” features Gallimimus briefly as a part of the herd seeking the nesting grounds through the desert. One of the “chicken mimics” succumbs to exhaustion and is scavenged ...

bahndooiveche and positively identified it as a dinosaur. "It was basically the size of a chicken but with a really long tail," said Lovelace in a press release. "We think of dinosaurs as these giant ...

Some researchers examined prehistoric fossils and some tweaked the question a little bit, but everyone came upon the same ...

The first dinosaurs may have evolved near the equator, and not in the southwest of the supercontinent Gondwana, as ...

and North America's oldest dinosaur, has been described in a new study. Dating back 230 million years, the chicken-sized dinosaur has big implications for our understanding of how dinosaurs spread ...

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

The remains of the earliest dinosaurs may lie undiscovered in the Amazon and other equatorial regions of South America and Africa, suggests a new study led by UCL (University College London) ...

The mystery behind the origins of the dinosaurs may have been given a new twist, with a modeling study suggesting they may have evolved in what is today equatorial Africa and South America. This would ...

By contrast, the earliest dinosaurs were much smaller than their descendants -- more the size of a chicken or dog than a Diplodocus. They walked on two legs (were bipedal) and most are thought to have ...

The researchers also found evidence that silesaurids, long thought to be cousins of dinosaurs, might actually be ancestors of ...