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13" Fossil Fish (Phareodus) - Green River Formation, 18 Inch Layer
This is a darkly preserved, 13" long Phareodus from the famous 18 inch layer of the Green River Formation in Wyoming. It's nicely centered on an unbroken 16.6 x 9.9" slab of shale, and the preservation is dark and detailed. This specimen is backed with plywood and includes a strap hanger for easy hanging.
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
Phareodus testis
LOCATION
Kemmerer, Wyoming
FORMATION
Green River Formation, 18 Inch Layer
SIZE
13" fish on 16.6 x 9.9" shale
CATEGORY
SUB CATEGORY
ITEM
#114330
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