Non-bird dinosaurs lived between about 245 and 66 million years ago, in a time known as the Mesozoic Era. This was many millions of years before the first modern humans, Homo sapiens, appeared.

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 ...

Archaeopteryx, long considered the earliest fossil bird, could be knocked off its perch by Baminornis zhenghensis, which ...

based on the locations of the currently oldest-known dinosaur fossils, the evolutionary relationships among these early forms and Earth's geography during the Triassic Period. This locale spans ...

The mystery behind the origins of the dinosaurs may have been given a new twist, with a modeling study suggesting they may have evolved in what is today equatorial Africa and South America. This would ...

how early dinosaurs evolved and what Earth looked like during the Triassic Period. Their answer for the birthplace are the Sahara desert and the Amazon rainforest regions - which are now separated ...

Some dinosaurs were getting bigger by the end of the Triassic. Climate changes during the period underwrote a vegetation boom that provided some previously omnivorous dinosaur lineages with enough ...

based on the locations of the currently oldest-known dinosaur fossils, the evolutionary relationships among these early forms and Earth's geography during the Triassic Period. This locale spans the ...