geotimescale enhanced 2.2

The Geologic Time Scale shows the names of the eons, eras, periods, epochs, and ages along with their corresponding dates.

This enhanced version also includes illustrations and information for significant events that have occurred during Earth's long history. Illustrations by Dennis Tasa provide an artistic impression of how Earth may have appeared and how life may have evolved over time.

This app provides a quick reference for students, educators, professional geologists, or anyone interested in geology.

EASY TO USE: 
No internet connection required after download. Ideal for field use. Just touch the button in the toolbar to display the names and dates of the ages. Touch the info icons to see the illustrations. For each illustration, touch the "more info" button to read about life on Earth at that time.

Correlates with the Next Generation Science Standards for Earth Science:
ESS1.C: The History of Planet Earth
ESS2.E: Biogeology