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 ...

Everyone knows about the mass extinction that ended the Age of Dinosaurs. About 66 million years ago, a seven-mile-wide asteroid slammed into our planet and began a mass extinction that wiped out all ...

Jurassic and Cretaceous. During this era, the land gradually split from one huge supercontinent into smaller ones. The associated changes in the climate and vegetation affected how dinosaurs evolved.

Stegosaurus, Allosaurus and Diplodocus are among the Jurassic Period’s most famous faces. But how dinosaurs went from a small and unimportant group of reptiles to ruling our planet for millions of ...

Warm, moist, tropical breezes. This was the Jurassic, which took place 199 to 145 million years ago. At the start of the period, the breakup of the supercontinent Pangaea continued and accelerated.

The Triassic period was a unique episode in Earth’s ... These evolved land reptiles thrived during the periods after the Triassic – Jurassic and Cretaceous – and ruled Earth’s landscape ...

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

3 min read The start of the Triassic period (and the Mesozoic era ... Dinosaurs, however, survived and went on to dominate the Jurassic.