Bidspirit auction | An Eocene Utah Green River

An Eocene Utah Green River Formation Fossil Fish Plate - An Eocene-epoch fossil fish mortality plate featuring several Knightia specimens in a limestone matrix. The specimen is a natural split-rock slab of cream-colored limestone with irregular, rough-hewn edges. It contains a group of small herring-like fish, preserved with a distinct reddish-brown mineral replacement that provides a sharp visual contrast against the light sedimentary rock. A small white adhesive paper label is affixed to the reverse side, printed with the text 'Fossils Fish. Knightia. Green River Formation UTAH USA'. No other signatures, maker marks, or inventory stamps are present on the stone surface. Width: Approximately 8 inches. 50 million years old