Fossil Cardiospermum (Balloon Vine) & Persea (Laurel) Leaves - Green River Formation

These are fossil leaves from Cardiospermum coloradensis (balloon vine) and Persea coriacea (a member of the laurel family). They are Eocene in age and come from the Green River Formation. The preservation is beautiful and fine details are faintly visible.

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.