Large, 4.4" Fossil Hackberry (Celtis) Leaf - Montana

This is a detailed fossil leaf of Celtis aspera, from the Fort Union Formation, Glendive Montana. It is from the Paleocene, or approximately 60 million years old. The dark orange preservation contrasts well against the shale, and all the veins of the leaves can be seen in good relief. The color change in the fossil is due to a change in the rock color. There may be some touchups to the surface of the leaves where some of it flaked onto the negative during collection. It comes with an acrylic display stand.