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6.9" Fossil Fish (Knightia) - Green River Formation - 18 Inch Layer
This is a 6.9" long fossil fish (Knightia) from the famous 18 Inch Layer of the Green River Formation near Kemmerer, Wyoming. There is also a 4.8" Knightia eocaena present. This specimen shows excellent preservation of bones and fin rays.
This specimen includes an acrylic stand.
This specimen includes an acrylic stand.
About The 18 Inch Layer Of Fossil Lake
Specimens like this come from the coveted 18 inch layer of the Green River Formation, which produces darker and more detailed fish than the majority on the market. The rock from this layer is much harder and more durable than other layers in the formation, likely due to its initial deposition conditions in deep water. Because of these conditions, fish found in the 18-inch layer can be extracted whole and in excellent condition. This layer is typically collected at night using low-angle light to see the bump in the rock that the fish's backbone creates. They then cut these fish out and take them to a lab where the fish, which may be up to an inch under the surface of the rock, are meticulously extracted under microscope with hand tools.
A view of the 18 inch layer of the Green River Formation at the Lindgren quarry near Kemmerer, Wyoming.
Specimens like this come from the coveted 18 inch layer of the Green River Formation, which produces darker and more detailed fish than the majority on the market. The rock from this layer is much harder and more durable than other layers in the formation, likely due to its initial deposition conditions in deep water. Because of these conditions, fish found in the 18-inch layer can be extracted whole and in excellent condition. This layer is typically collected at night using low-angle light to see the bump in the rock that the fish's backbone creates. They then cut these fish out and take them to a lab where the fish, which may be up to an inch under the surface of the rock, are meticulously extracted under microscope with hand tools.
A view of the 18 inch layer of the Green River Formation at the Lindgren quarry near Kemmerer, Wyoming.
SPECIES
Knightia eocaena
LOCATION
Warfield's Quarry, Kemmerer, WY
FORMATION
Green River Formation, 18 Inch Layer
SIZE
6.9" fish on 14.1 x 11.1" rock
CATEGORY
SUB CATEGORY
ITEM
#138610
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