oct 20, 64997982 BC - The last species of Dinosaur that lived before their extinction existed at this time.
Description:
The last species of dinosaur discovered before their mass extinction was a Triceratops from 65,000,000 years ago.https://news.yale.edu/2011/07/12/last-dinosaur-mass-extinction-discovered
Added to timeline:
Date:
oct 20, 64997982 BC
Now
~ 5883516 years ago