Fossil Rhus (Sumac) Leaf - Green River Formation

This is an Eocene aged fossil leaf from Rhus myricoides, a sumac. The leaf is 2.8" tall (including the stem) and on a piece of shale matrix. It is beautifully preserved with crisp edges and a nice dark color. Fine details are faint, but can be seen.

It comes the Green River Formation and the area in Uintah County, Utah. This is the same formation that is famous for producing well preserved fish fossils, but a different member and location.