An unidentified species of leaf fossil from the PETM nicknamed "Slim". It is related to poison ivy. The 55.8 million year old leaf fossil is from the collection of Scott Wing at The Smithsonian Institute in Washington, D.C.
Photo ID: 2011_10_HHE_104
Author: Ira Block
©2008 Ira Block all rights reserved
Published in: Science Archaeology, Nature, USA