nobody knows for sure, but they begans billions and billions of years ago
Some bipdeal dinosaurs from the Cretaceous with names beginning in "A" include: Achillobator Austroraptor Adasaurus Atrociraptor
dinosaurs
Dinosaurs first appeared during the Triassic period, approximately 230 million years ago. This era marked the beginning of the Mesozoic Era, often referred to as the "Age of Dinosaurs." The earliest known dinosaurs include species such as Eoraptor and Herrerasaurus.
Devils,Dinosaurs,Daisies
since the beginning of time. After the dinosaurs of course.
Dinosaurs first evolved 231.4 million years ago in Pangaea. This was during the beginning of the Mesozoic era, in the Triassic period.
dinosaurs lived for millions of years the tuara is the last living dinosaur
Dinosaurs went extinct.
Dinosaurs existed at the very beginning of earth that we know of. They are extinct, so they are not really alive to this day. But you can find sculptures of dinosaurs in the museum. Check for some around you and the people there will help you with any questions you have.
No. If you count birds as dinosaurs, they still exist. If you don't, dinosaurs became extinct at the end of the Cretaceous, not the beginning.
At the beginning of the Triassic period, there were no dinosaurs on Pangaea, the super continent. At the end of the period, it is not known exactly how many there were. There are about 700 named dinosaurs.
2012