This was many millions of years before the first modern humans, Homo sapiens, appeared. Scientists divide the Mesozoic Era into three periods: the Triassic, Jurassic and Cretaceous. During this era, ...

Dinosaurs long dominated Earth's land ecosystems with a multitude of forms including plant-eating giants like Argentinosaurus, meat-eating brutes like Tyrannosaurus and weirdos like Therizinosaurus, ...

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

the evolutionary relationships among these early forms and Earth’s geography during the Triassic Period. This locale spans the modern-day Sahara desert and Amazon rainforest regions, now ...

Paleontologists have known something strange happened between the end of the Triassic Period and the beginning of the Jurassic for the better part of a century. In the latest days of the Triassic ...

Many think dinosaurs first emerged on land well south of the equator that now forms part of Argentina and Zimbabwe, but they may have actually arisen in tougher conditions near the equator ...

the evolutionary relationships among these early forms and Earth’s geography during the Triassic Period. This locale spans the modern-day Sahara desert and Amazon rain forest regions ...

A study of fossilised faeces and vomit found in Poland last year revealed how early dinosaurs in the Triassic era, 252 to 201 million years ago, competed for food. By examining the fossils for ...

the evolutionary relationships among these early forms and Earth's geography during the Triassic Period. This locale spans the modern-day Sahara desert and Amazon rainforest regions, now separated ...