The Fossil Record

Timescale by Ross Elgin (2004)
All dinosaurian groups except for birds (Aves) went extinct at the end of the Cretaceous period, 65 million years ago. Dinosaur fossils are found in Triassic, Jurassic, and Cretaceous sediments from around the world on all continents, including Antarctica. The dinosaurs were the main terrestrial fauna for over 150 million years, and were only replaced by mammals after huge natural disasters including an asteroid impact wiped them off the face of the Earth.

Author: Emma Schachner
Last updated: 13 November 2004
Return to Fossil groups home page

Websites produced by students on the MSc Palaeobiology programme in the Department of Earth Sciences at the University of Bristol for academic year 2003-4