Educational Resources

History of the Earth Poster

International Stratigraphic Commission-CHRONOS poster with 2004 Geologic Time Scale and Tower of Time graphics [download 1.9 Mb]

Understanding Geologic Time

History and development of the Geologic Timescale Why is it needed? University of California, Berkeley Museum of Paleontology

GEOTIME a Smithsonian Institution's web resource on geologic time

Ancient Denvers from the Denver Museum of Nature and Science