5.1" Fossil Fish (Knightia Alta) With Pos/Neg - Wyoming

Fossil Fish (Knightia Alta) With Pos/Neg - Wyoming #144208

This 5.1" long Knightia alta comes from the Eocene aged Green River Formation of Wyoming. It is nicely detailed and prepared with bone structure, fins, and the overlapping scale structure visible. This specimen split out really nicely and comes with both the positive and negative impression.

It comes with an acrylic display stand.

50 million years ago, in the Eocene, these fish thrived in Fossil Lake, which was fed by the Uinta and Rocky Mountain highlands. The anoxic conditions at the bottom of Fossil Lake slowed bacterial decomposition, prevented scavengers from disturbing corpses and, most interestingly, suffocated creatures that ventured into the oxygen-starved aquatic layer. The result is a miraculous exhibition of Eocene biota: a subtropical aquatic community within sycamore forests, teeming with creatures such as freshwater stingrays, dog-sized horses, menacing alligators, early flying bats, and one of the first primates.

A view of one of the commercial quarries where fossils from the Green River Formation are collected.

Dig Your Own Fossils At Fossil Lake Safari