Why did dinosaurs live along time ago?

Answer 1

On the contrary, they lived, as a group, quite a long time. Typically, a species lasts about a million years; some dinosaurs remained little changed for as much as 30 million years, and as a clade, they endured over 130 million years.

Answer 2

Dinosaurs are belived to have gone extinct little over 65,000,000 years ago.

Answer 3

Dinosaurs lived in the time of Pangaea. Pangaea was the combination of all the continents which formed one super continent.