Ten Small Knightia Fossil Fish - Wyoming

These are nine nicely prepared and 2 partial Knightia eocaena fossil fish. They come from the Eocene aged Green River Formation of Wyoming. There is one partial fish on the front as well as one one partial fish on the back.

50 million years ago, in the Eocene these fish thrived in Fossil Lake fed by Uinta and Rocky Mtn. 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 in 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.