This is a well preserved 2.4" fossil leaf (Fraxinus) from the Green River Formation, Uintah County, Utah. The dark color of the fossil stands out nicely against the gray stone. Fraxinus is an ash tree. This specimen also contains a Mimosites leaf, a dragonfly (Odonata) and a second fly (Diptera).
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.