Bursera inaequalateralis Green River Formation Middle Eocene Lincoln County, Wyoming
This is beautiful example of Bursera. It has distinctive venation and a semi-serrate margin. The leaf is 14 cm long and very attractive. It is from the 18 inch layer. Bursera, named after the Danish botanist Joachim Burser (1583-1639), is a genus with about 100 described species [2] of flowering shrubs and trees varying in size up to 25 m (82 ft) high. They are native (often for many species endemic) to the Americas, from the southern United States south through to northern Argentina, in tropical and warm temperate forest habitats.
