How long have dinosaurs been extinct?

Answer 1

Megalodon have been found dating back to 25 million years ago, and as recent as only 2 million years ago. That extends from the late Paleogene period through the Neogene and into the early Quaternary. They survived for 23 million years.

Answer 2

The non avian dinosaurs died out at the end of the Mesozoic. That was 65.5 million years ago. However, birds, a group of dinosaurs, continue to exist to the present day.

Answer 3

Carcharodon megalodon lived from 18 million to 1.5 million years ago.

Answer 4

The Coelacanth (Latimeria chalumnae) was thought to be extinct for more than 60 million years until a live specimen was captured in 1938.

Answer 5

65.5