Eocene Green River Tree Catkin P-PCM-16-065 Fossil seed or fruit But those between these two

But those between these two extremes benefited from ideal conditions

Upper Cretaceous (Campanian)

Green River Fm (Parachute Creek Mbr)

Tree Flower (Catkin) aff Platycara sp

and African tropics

Eocene Green River Tree Catkin P-PCM-16-065 Fossil seed or fruit But those between these twoTree Flower (Catkin) aff Platycara sp. Green River Formation Middle Eocene Lincoln County, Wyoming This is a very nice fossil tree flower and may be related to the Family Juglandaceae, a relative to the walnut. The specimen has good detail with a single attached catkin and clusters of sessile flowers. This specimen is from the 18 inch layer. Fossil examples of this group are represented today by some of our best known trees with many extant species.