- Knightea Fish
- Partial Palm Frond
- Eocene Age
- Green River Formation
- Specimen measures approx. 15.5″ wide x 16″ tall
The Green River Formation is an Eocene geologic formation that records the sedimentation in a group of inter mountain lakes in three basins along the present-day Green River in Colorado, Wyoming, and Utah. The sediments are deposited in very fine layers, a dark layer during the growing season and a light-hue inorganic layer in the dry season.