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. Scientists divide the Mesozoic Era into three periods: the Triassic, Jurassic and Cretaceous.
Similarly, it is asked, what was the very first dinosaur on earth?
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 (meat-eaters that walked on two legs), and small in comparison to the giant dinosaurs that would follow.
What is the earliest known dinosaurs?
A newly-described fossil found decades ago in Tanzania extends the dawn of the dinosaurs more than 10 million years further back in time. Named Nyasasaurus parringtoni, the roughly 243-million-year-old fossils represent either the oldest known dinosaur or the closest known relative to the earliest dinosaurs.
What is the oldest dinosaur fossil ever found?
Paleontologists have for about 150 years suggested dinosaurs existed in the Middle Triassic, as the oldest dinosaur fossils fit into the Late Triassic period.