A small, toothy dinosaur known as Eoraptor, long considered to be the earliest member of the predatory branch of the dinosaur tree, is revealed to have traits that instead place it at the base of ...

Tracking the origin of the dinosaurs has been one of the most difficult tasks paleontologists have faced, but since the 1990s, multiple discoveries in South America have provided scientists with a ...

The oldest dinosaurs yet discovered date back nearly 230m years to the Late Triassic epoch. Fossils of Herrerasaurus and Eoraptor were discovered in Argentina; both were bipedal carnivores ...

The dinosaur family tree just added a new relative: a small, nipping, meat-eating creature dating back to dinosaurs’ earliest days. Unearthed in 230-million-year-old rocks in Argentina, in life this ...

Two nasty looking little critters that roamed a remote valley of Argentina 230 million years ago point to a key divergence of early dinosaur evolution, when some predatory dinosaurs turned away from ...

We are at a critical time and supporting climate journalism is more important than ever. Science News and our parent organization, the Society for Science, need your help to strengthen environmental ...

What the name means "early plunderer" or "dawn plunderer" Named by Sereno, Forster, Rogers and Monetta (1993) Where found Argentina Length up to 1m Height 1m Weight 10kg How it moved on two legs Teeth ...

The long-necked sauropod dinosaurs were among the most massive creatures to have ever evolved (their immensity only surpassed by the blue whale), but like all dinosaurs their early relatives were ...