Dinosaurs Were Doomed Long Before The Asteroid Killed Them Off
An asteroid impingement may have signaled thedeath knellfor the non - avian dinosaur , but according to a young subject field published inProceedings of the National Academy of Sciences , they were already in a whorl of evolutionary descent long before the arrival of the 66 - million - year - old quad - borne Revelation of Saint John the Divine . Researchers from the Universities of Reading and Bristol used a cutting - boundary statistical model to show that dinosaurian metal money were already going extinct faster than new ones were emerging up to 50 million years before the asteroid arrived ....