Diplomystus Dentatus fish from the Paleogene, Eocene, 53.500,000 to 48.500,000 years.
An ancestor of the herring family, a very finely boned fish which is extremely difficult to prepare from the Lagerstätte varve layer of the Eocene limestones of the Green River formation 18-inch layer.
These predator fish came from the prehistoric fossil lakes. The lower Eocene deposits of Green River formation was thought to be a large freshwater lake. The calcite would be absorbed by the remains of the fish, transforming their bones into a hard mineralized deposit in the slightly softer and lighter colored limestone shales.
Mounted in a handmade brass frame that can be fixed in three different ways.