Fossil seed – Carpolithus sp.
Early Eocene
Green River Fm.- Parachute Creek Mbr.
Douglas Pass, CO USA.

5mm fruit on 33mm slab.

Carpolithus is a form genus of a seed or fruit not known to be associated with a particular plant.

It’s a basic name for a nondescript fossil.  It’s derived from Greek, simply meaning, “stone fruit.”