Trek through Time Plaque, Oligoene

Detailed Description
The Trek Through Time is a short walk through the woods at the USGS National Center in Reston VA. It covers the Phanerozioc - the last 541 million years of Earth history. This is the plaque for the Oligocene.
Details
Image Dimensions: 1722 x 1272
Date Taken:
Location Taken: Reston, VA, US
Credits
Diorama by J. Matternes, courtesy of the Smithsonian
Map from the Deep Time Maps collection, courtesy of Colorado Plateau Geosystems, Inc.