What was the last dinosaur extinct?
Triceratops. As of September 2019, it's the confirmed fossil closest to the K-T boundary, the geological layer that marks the transition from the Cretaceous period to the Tertiary period at the time of the mass extinction that took place 65 million years ago.
Join Alexa Answers
Help make Alexa smarter and share your knowledge with the worldLEARN MORE