This listing features a Diplomystus fossil fish, a stunning and well-preserved specimen from the Green River Formation of Kemmerer, Wyoming, USA. This species thrived during the Eocene Period (~53–48 million years ago) and is an iconic fossil from one of the world’s most famous fossil sites.
✔ 100% genuine specimen – not enhanced or artificially treated
✔ Incredible detail showcasing delicate fin structure and bone preservation
✔ One of the most famous fossil fish species from the Eocene
✔ A perfect display piece for collectors, educators, and museums
All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity. The specimen shown in the photos is the exact fossil you will receive.
Diplomystus dentatus is an extinct freshwater fish related to modern herring and sardines. These fish thrived in the ancient Fossil Lake, a prehistoric body of water within what is now Wyoming, USA. Fossils from this region are renowned for their exceptional preservation, capturing intricate details of ancient fish species.
This fossil Diplomystus provides a fascinating look at early Eocene ecosystems, preserved in the Green River Formation, one of the world’s most significant fossil deposits. It is commonly found alongside other fossilized fish species, including Knightia and Mioplosus, making it an essential specimen for fossil enthusiasts and researchers.
This Diplomystus fossil is part of the Alice Purnell Collection, one of the largest and most respected fossil collections in the world. We specialise in high-quality, authentic fossils, ensuring this piece is ideal for museum displays, private collections, or educational study.
A stunning Eocene fish fossil—own a piece of prehistoric aquatic history today!