65 million years
65 million years
65 million years
a long time ago :]
The beginning of Earth's current era is marked by a mass extinction.
The current era is the Cenozoic. It began 65.5 million years ago. The previous era was the Mesozoic.
It is about 251 million years ago
it would be around 650 millions of years ago
it would be around 650 millions of years ago
it would be around 650 millions of years ago
over 100 years ago
The Mesozoic era began roughly 250 million years ago, and ended 65 million years ago. (This Era ended because of the K.T. extinction)
Quaternary and it started 16 million years ago