
Fossil preparation, at the Thomas Condon Paleontology Center, John Day Fossil Beds National Monument, Grant County, Oregon.

Fossil preparation, at the Thomas Condon Paleontology Center, John Day Fossil Beds National Monument, Grant County, Oregon.

Fossil preparation, at the Thomas Condon Paleontology Center, John Day Fossil Beds National Monument, Grant County, Oregon.

Lichen, stone.
At the Foree Unit of the John Day Fossil Beds National Monument, Grant County, Oregon.

Lichen, stone.
At the Foree Unit of the John Day Fossil Beds National Monument, Grant County, Oregon.

Painted Hills series, No. 9.
Painted Hills unit of the John Day Fossil Beds National Monument, Wheeler County, Oregon.

Painted Hills series, No. 9.
Painted Hills unit of the John Day Fossil Beds National Monument, Wheeler County, Oregon.

Painted Hills series, No. 8.
Painted Hills unit of the John Day Fossil Beds National Monument, Wheeler County, Oregon.

Painted Hills series, No. 8.
Painted Hills unit of the John Day Fossil Beds National Monument, Wheeler County, Oregon.

Painted Hills series, No. 7.
Painted Hills unit of the John Day Fossil Beds National Monument, Wheeler County, Oregon.

Painted Hills series, No. 7.
Painted Hills unit of the John Day Fossil Beds National Monument, Wheeler County, Oregon.