Eocene Green River Seed P-PCM-16-077

Cedrelospermum nervosum Seed
Green River Formation 
Parachute Creek Member
Middle Eocene
Uintah County, Utah 

Here is a perfectly preserved seed of the elm relative Cedrelospermum.  This specimen has excellent detail.
Cedrelospermum leaves are distichously arranged, slender, pinnate-veined and range from serrate with simple teeth to entire-marginded.  Many of these leaves were previously misidentified as Zelkova. The fruits show a striated endocarp with a relatively broad wing with distinct venation. C. nervosum is abundant in the Parachute Creek Member.