Zelkova (Keaki Tree Leaf) & Unidentified Leaf - Green River Formation

These are Eocene aged fossil leaves from Zelkova nervosa, also known as a Keaki Tree, and and unidentified leaf. The Zelkova leaf is 1.5" tall and the other is 1.3" (including the stems) and on a piece of shale matrix. They are beautifully preserved with crisp edges. Fine details are faint but visible. There are also the remains of two other leaves of the reverse side that are unidentified.

Slight variations of the leaves have been designated under the names Planata nervosa and Myrica praedrymeja, but they now all fall under the species name Zelkova nervosa.

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.