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

A herd of primitive carnivorous dinosaurs (Coelophysis, foreground) is enveloped by a sandstorm, while a large carnivorous crocodile-like archosaur (Postosuchus) and several early sauropodomorph ...

Despite the widespread devastation, life recovered during the Triassic period as new species arose and diversified quickly. This also marked the first time the earliest dinosaurs appeared.

The Triassic period stands out in Earth’s history as the time when dinosaurs first evolved. It was followed by the Jurassic and Cretaceous periods – at the end of the latter, the dinosaurs ...

The Triassic is a tale of two histories. One is its natural history, begun after the Great Permian Dying, 252m years ago, when, as happens from time to time, plate tectonics brought Earth’s continents ...

These lived during the Triassic period and are typically not considered true dinosaurs. Instead, they’re usually viewed as ...

The associated changes in the climate and vegetation affected how dinosaurs evolved. All continents during the Triassic Period were part of a single land mass called Pangaea. This meant that ...

By about 200 million years ago, however, dinosaurs had essentially taken over the planet, while most other reptiles disappeared during the end-Triassic extinction at around that time. What led to ...

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 ...

Grasshoppers appeared. But perhaps the biggest changes came with the evolution of dinosaurs and the first mammals in the late Triassic, starting around 230 million years ago. The Triassic closed ...