Dinosaurs ran out of evolutionary steam, say experts

DINOSAURS were running out of evolutionary steam during their last 50 million years on Earth, scientists have learned.

They were not part of the Cretaceous Terrestrial Revolution about 100 million years ago, which saw the rapid expansion of many land animals and plants.

While flowering plants, lizards, snakes, birds and mammals evolved swiftly, the dinosaurs plodded behind. A short time later, they were extinct.