Fossil Fish from Wyoming

Fossilized fish from the Green River Formation, Wyoming, USA. Several bony fish skeletons on a shale slab, preserved in Eocene strata.

The Green River Formation is the world's most renowned fossil site for Eocene bony fish, with an age of approximately 50 million years. The fine-grained shale layers allowed for premium preservation, with complete skeletal structures including scale patterns and fin rays.

Several fish on one shale slab likely document a synchronous death event, such as oxygen deprivation or volcanic ashfall, where multiple individuals were deposited and preserved together.

The flat slab geometry is suitable for wall staging or hanging presentation in gallery dimensions. A museum-quality American collector's item with documented Eocene Green River provenance.