Diplomystus Fossil Fish Plate – Green River Formation, Kemmerer, Wyoming

This exquisite fossil plate features Diplomystus dentatus, a prehistoric fish that swam in the lakes of what is now southwestern Wyoming around 50 million years ago. Preserved in the fine-grained limestone of the Green River Formation, the specimen displays remarkable detail, from delicate fin rays to the distinctive upturned mouth. The contrast between the fossil and the pale matrix highlights the natural artistry of deep time, offering both scientific value and visual beauty.

Green River fish fossils are among the most celebrated in the world, prized by both collectors and museums for their completeness and preservation. This Diplomystus plate serves as a tangible connection to the Eocene epoch, when lush subtropical ecosystems flourished in North America. Whether showcased in a fossil collection, displayed as natural art, or appreciated as a conversation piece, this specimen captures the story of evolution and the extraordinary preservation conditions of the Green River Formation.

Approx. specimen size: 200mm x 130mm x 10mm