Eocene Green River Winged Fruit P-GRP2-16-016 Eocene This specimen is from the

This specimen is from the 18-inch layer

between about 154 and 152 million years ago

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

Petrified trees are sometimes found in streams

Eocene Green River Winged Fruit P-GRP2-16-016 Eocene This specimen is from the(?)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.