This Specimen has been sold.
Large 6 Inch Knightia Eocaena
This is a large Knightia eocaena from the famous Green River Formation, not to be confused with the more common and smaller Knightia alta. The 50 million year old fish is wonderfully detailed and the coffee colored preservation contrasts very well with the large rectangular slab of shale it is displayed on.
It comes 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. This layer is typically collected at night using low angle light to see the bump in the rock that the back bone create. They then cut these fish out and take them to a lab where the fish which maybe up to an inch under the surface of the rock are meticulously extracted under microscope with hand tools.
Like essentially ALL fish from the 18 inch layer, there is some minor restoration to repair small bits of scale that flaked off during prep and on some fin tips (which typically don't preserve well)
The 12x8 matrix can be cut down to a smaller size at the buyers request.
It comes 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. This layer is typically collected at night using low angle light to see the bump in the rock that the back bone create. They then cut these fish out and take them to a lab where the fish which maybe up to an inch under the surface of the rock are meticulously extracted under microscope with hand tools.
Like essentially ALL fish from the 18 inch layer, there is some minor restoration to repair small bits of scale that flaked off during prep and on some fin tips (which typically don't preserve well)
The 12x8 matrix can be cut down to a smaller size at the buyers request.
About Knightia
Knightia is an extinct genus of small, schooling, ray-finned fish related to modern herrings and sardines. Abundant in the warm freshwater lakes of the Eocene Green River Formation, they fed on insects, plankton, and tiny fish, while serving as prey for nearly every larger predator in the ecosystem. The most common species, Knightia eocena, reached about 15 cm in length and is celebrated today as the state fossil of Wyoming.
These streamlined fish are recognized by their heavy scales, small conical teeth, and rows of dorsal and ventral scutes along the body. Their fossils are among the most iconic from the Green River Formation—an exceptional 48-million-year-old lake deposit in Wyoming, Colorado, and Utah known for preserving a remarkably detailed snapshot of ancient life in a warm, lake-rich Eocene landscape.
Knightia is an extinct genus of small, schooling, ray-finned fish related to modern herrings and sardines. Abundant in the warm freshwater lakes of the Eocene Green River Formation, they fed on insects, plankton, and tiny fish, while serving as prey for nearly every larger predator in the ecosystem. The most common species, Knightia eocena, reached about 15 cm in length and is celebrated today as the state fossil of Wyoming.
These streamlined fish are recognized by their heavy scales, small conical teeth, and rows of dorsal and ventral scutes along the body. Their fossils are among the most iconic from the Green River Formation—an exceptional 48-million-year-old lake deposit in Wyoming, Colorado, and Utah known for preserving a remarkably detailed snapshot of ancient life in a warm, lake-rich Eocene landscape.
SPECIES
Knightia eocaena
LOCATION
Kemmerer, Wyoming
FORMATION
Green River Formation
SIZE
6" on 12x8 plate
CATEGORY
SUB CATEGORY
ITEM
#272
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