How did dinosaurs go extinct? - Morgridge Institute for Research

When did dinosaurs go extinct? These are the biggest theories.

What killed the dinosaurs, and which one was the biggest?

Paleontologists Find Perfectly Preserved Dinosaur Fossils From the Day of the Asteroid Impact

New fossils from a small tyrannosaur fill a gap in the scientific record and help explain how Tyrannosaurus rex evolved to become a massive super-predator