This is a well preserved 2.2" fossil leaf (Celtis) from the Green River Formation, Uintah County, Utah. The dark color of the fossil stands out nicely against the gray stone. There are at least two species of Celtis known from this formation and identifying species is very difficult. Celtis are of the Hackberry family.
While this formation is best known for well preserved fossil fish found in Wyoming, other sections of the formation contain a very diverse insect fauna.
Comes with an acrylic stand.