Geologic Time Scale Click to view more information Click to view more information Click to view more information Click to view more information Click to view more information Click to view more information Click to view more information Click to view more information Click to view more information Click to view more information Click to view more information Click to view more information Click to view the Geologic Time Scale Click to view the Geologic Time Scale with Ages Click to view more information about the App

Need a quick reference to the geologic time scale of Earth's history? Try out our Free geotimescale application on your iPhone™ or iPod touch®!

Find out, for example, when dinosaurs ruled the world or when reptiles first appeared. This is a complete reference for students, educators, professional geologists, or anyone interested in geology. There are two different views featured: Geologic Time Scale and Scale with Ages. The app is completely self-contained. No internet connection required. Ideal for field use.

The Geologic Time Scale view shows the names of eons, eras, periods, and epochs and their corresponding dates. An added feature of this view offers information icons at certain points on the scale. Tapping on each of these icons reveals additional information about which phenomenon occurred at that time such as the extinction of the dinosaurs at 65.5 Ma.

Free!
Available on the App Store