The rise of dinosaurs is one of evolution's most intriguing success stories. Emerging in the mid-Triassic period, their journey to dominance spanned millions of years, marked by environmental ...

A remarkable finding has surfaced in the colorful, fossil-rich badlands of Arizona's Petrified Forest National Park: North America's oldest known pterosaur. The newly identified species - a flying ...

And as the Triassic gave way to the Jurassic around 200 million years ago, North America began to separate from Africa and Europe, forming the Atlantic Ocean – and isolating the dinosaurs.

Archosauromorphs walked — across a 10,000-mile hellscape — so dinosaurs could run. According to a new study published in Nature Ecology and Evolution, archosauromorphs, early ancestors of dinosaurs ...

A 225-million-year-old leg bone from Zambia is helping scientists rethink the size, diversity, and role of early dinosaurs.

The research addresses a significant gap in current knowledge: the first 30 million years of dinosaur evolution during the Late Triassic period.

A fossilized leg bone found in Africa is reshaping our ideas about the size of the first dinosaurs. The 225-million-year-old bone belonged to a mysterious reptile group called silesaurs, which lived ...

About 230 million years later, scientists have discovered Africa’s oldest dinosaur to date on the continent in Zimbabwe—and the nearly complete skeleton is now helping scientists better ...

From roughly 230-200 million years ago, during the Late Triassic and into the early Jurassic periods, dinosaurs emerged from just one of many reptilian species to become the dominant species on Earth.

Stock image of an artist's 3D rendering of three sauropod dinosaurs. A fossil site of “unique importance” has shed light on a lost prehistoric ecosystem, where early dinosaurs roamed more than ...

Scientists had expected such a dinosaur forerunner to be a smallish, two-legged predator resembling early dinosaurs such as Herrerasaurus, which lived about 231 million years ago in Argentina.