Knightia eocaena Green River Fish Fossil
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Knightia eocaena Green River Fish Fossil
Size plate: 25.5 x 20 x 2 cm
Size fish : 11 cm
Knightia, (Knightia eocaena,) a prehistoric herring that left countless fossils in Wyoming, was named the state fossil. Prehistoric type of herring, closely related to today's Clupea herrings - lived 50 million years ago in a freshwater lake in what is now southwestern Wyoming. Their demise is a bit of a mystery; all we really know is that they died very suddenly, in large groups.
