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Diplomystus is an extinct fish from Wyoming's Green River Formation of Eocene age. It possessed a herring-shaped body and upward-facing mouth, with prey consisting of smaller fish. Fossils are well-preserved, and some have prey in its jaws.


The fossil you receive will be a very close example to the one shown in the photo.

Latin Name: Diplomystus dentatus

Fossil Age: 55 million years old

Fossil Approx Size: 17.8 cm

Stand Height: 15.2 cm

Age: Eocene

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