Green River Fish Fossils For Sale | Genuine Eocene Fossil Fish
Green River Fish Fossils For Sale offer collectors an amazing look at prehistoric freshwater life from approximately 50 million years ago. These remarkable fossils come from the famous Green River Formation, especially the fossil-rich lake deposits of southwestern Wyoming.
During the Eocene Epoch, ancient lakes supported many species of fish, turtles, crocodilians, insects, and plants. As a result, fine lake sediments preserved some fish with extraordinary detail. Today, collectors can enjoy fossils that reveal scales, fins, bones, and even delicate skeletal structures.
At Prehistoric Fossils, we offer genuine fossils backed by our 100% authenticity guarantee.
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Knightea Fish Green River Wyoming #43
$20.00 -
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Knightea Fish Green River Wyoming #44
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Knightea Fish Green River Wyoming #45
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Diplomystus Fish Green River Wyoming #11
$95.00 -

Diplomystus Fish Green River Wyoming #13
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Diplomystus Fish Green River Wyoming #14
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Diplomystus Fish Green River Wyoming #16
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Diplomystus Fish Green River Wyoming #17
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Diplomystus Fish Green River Wyoming #18
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Diplomystus Fish Green River Wyoming #19
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Diplomystus Fish Green River Wyoming #2
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Diplomystus Fish Green River Wyoming #20
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Diplomystus Fish Green River Wyoming #22
$115.00 -

Diplomystus Fish Green River Wyoming #23
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Diplomystus Fish Green River Wyoming #24
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Diplomystus Fish Green River Wyoming #25
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Diplomystus Fish Green River Wyoming #29
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Diplomystus Fish Green River Wyoming #3
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Diplomystus Fish Green River Wyoming #30
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Diplomystus Fish Green River Wyoming #5
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Diplomystus Fish Green River Wyoming #8
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Cockerellites liops Green River Fish #1
$295.00
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Green River Fish Fossils For Sale – Genuine Eocene Fish Fossils
Green River Fish Fossils For Sale offer collectors a remarkable look at prehistoric freshwater life. These genuine fossils come from the famous Green River Formation of Wyoming, Utah, and Colorado. About 52 million years ago, large freshwater lakes covered parts of this region during the Eocene Epoch. Today, their ancient sediments preserve some of the world’s finest fossil fish.
In addition, many specimens display detailed skeletons, scales, fins, and teeth. As a result, Green River fish fossils are popular with collectors, educators, and natural history enthusiasts.
Where Are Green River Fish Fossils Found?
The most famous fossil fish deposits occur near Kemmerer, Wyoming, especially in the ancient Fossil Lake basin. Fine lake sediments slowly covered dead fish and protected their remains. Furthermore, low-oxygen conditions near the lake bottom helped reduce decay and disturbance by scavengers.
Over millions of years, these sediments hardened into limestone and shale. Today, fossil preparators carefully expose the preserved fish using specialized tools. Consequently, many specimens reveal amazing anatomical details.
Popular Green River Fossil Fish Species
The Green River Formation contains many kinds of ancient fish. Some species are common, while others are much harder to find.
- Knightia: Small, schooling fish related to modern herrings. These are among the most common Green River fossils.
- Diplomystus: Predatory fish with distinctive upturned mouths, often preserved with smaller fish.
- Phareodus: Large predatory fish with strong jaws and sharp teeth.
- Mioplosus: Predatory fish with streamlined bodies and prominent teeth.
- Cockerellites: Deep-bodied fish with a shape similar to modern sunfish.
- Notogoneus: Long-bodied bottom-feeding fish found in ancient lake deposits.
Why Are Eocene Green River Fish Fossils Special?
Unlike many fossil deposits, the Green River Formation often preserves nearly complete fish skeletons. In some cases, scientists can even study stomach contents and evidence of ancient predation.
Moreover, these fossils reveal how prehistoric freshwater ecosystems functioned. Scientists use them to study fish evolution, ancient food webs, and environmental changes during the Eocene.
Collecting Genuine Green River Fish Fossils For Sale
Green River fish fossils range from small individual specimens to impressive display slabs. For example, a single Knightia makes an excellent educational fossil. Meanwhile, larger Phareodus specimens and multiple-fish plates can become striking natural history displays.
When selecting a fossil, consider its completeness, preparation quality, size, and any restoration. Additionally, accurate identification and geological information help establish its scientific and collectible value.
Buy Green River Fish Fossils With Confidence
At Prehistoric Fossils, we have served fossil collectors and natural history enthusiasts since 1997. We offer genuine prehistoric specimens for beginners, educators, and experienced collectors.
Furthermore, our fossils include an identification label and our 100% Guaranteed Genuine assurance. Whether you want a small fossil fish or a larger display specimen, explore our Green River Fish Fossils For Sale and discover an amazing piece of Earth’s ancient history.

