Eocene Green River Winged Fruit P-GRP2-16-016 Eocene and it consists mainly of

and it consists mainly of filled natural fractures

crane fly (Tipula)

Recent sources include both Azolla and Salvinia in Salviniaceae

The Green River Formation is the remnant of a large lake whose mud would eventually be transformed into soft calcite-bearing shale

This specimen is from the 18-inch layer

Eocene Green River Winged Fruit P-GRP2-16-016 Eocene and it consists mainly of(?)Lagokarpos lacustris Green River Formation Middle Eocene Lincoln County, Wyoming This is a good example of a winged fruit of unknown family and order relationship. The venation in the winged portion is not preserved but it has a detailed globose fruit body. These are found in the 18 inch layer but are not common.