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Green River, Wyoming

The Green River Formation from Wyoming is one of the most famous fossil strata in the world. Known for the thousands of fossil fish specimens collected there over the decades and for the well preserved and defined specimens of not only freshwater fish, but also insects, mammals, and plants. These specimens come from the Green River Formation exposures near Kemmerer, Wyoming and date to the Eocene Period (50-45 million years ago). The fish and other animals preserved in the layers all tell the story of the great Fossil Lake, that stretched from southern Wyoming, into Utah and Colorado 50 million years ago.

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  1. 7x5 in Fossil Fish Preparation Dig Kit Grade A - Wyoming

    Regular Price: $45.00

    Special Price $40.00

    Fossil Fish Preparation Kit Green River Formation Kemmerer, Wyoming Eocene Period - 50 Million years old Species: Knightia or Diplomystus Slab : 7 x 5 inch (each slab varies slightly, fish are about the same size) Each Kit Includes : • One Complete & Natural Fossil Fish • Pick for removing fossil shale • Magnifying Glass to study your specimen • Small Brush • Gum Eraser • Identification Guide and Information • Plus 1 Crystal Surprise! Learn More
  2. GIANT 7.25 in Diplomystus Green River Fossil Fish - Wyoming
    $155.00

    Diplomystus dentatus (Cope, 1877)

    Green River Formation - 50 Million years old
    Kemmerer, Wyoming, USA

    Diplomystus : 7.25 in.
    Matrix : 12 x 10.1 in.
    (1 inch = 2.54 cm)

    A huge and very well preserved Diplomystus fossil fish from the famous 18 Inch Layer of the Green River Formation.

    This specimen was collected by us in the Fall of 2016 and prepared in March 2019.

    Learn More
  3. GIANT 5.9 in Knightia alta Fossil Fish Green River - Wyoming
    $115.00

    Knightia alta (Leidy, 1873)
    Green River Formation - 50 Million years old Kemmerer, Wyoming, USA
    Knightia : 5.9 in. Plate : 11.7 x 9.1 in. (1 inch = 2.54 cm)
    A well preserved Knightia (Herring/Sardine) with a nice rich burgundy and black color complete with scales showing amazing detail that contrast nicely against the matrix. This fish is from the famous 18 Inch Layer of the Green River Formation!
    This specimen was collected by me in the late fall of 2016 and prepared March 2019.

    Learn More
  4. 3.96 in Diplomystus Green River Fossil Fish - Wyoming
    $55.00

    Diplomystus dentatus (Cope, 1877)

    Green River Formation - 50 Million years old
    Kemmerer, Wyoming, USA

    Diplomystus : 3.96 in.
    Matrix : 10.25 x 8.1 in.
    (1 inch = 2.54 cm)

    A nice a well preserved Diplomystus fossil fish from the famous 18 Inch Layer of the Green River Formation.

    This specimen was collected by us in the Fall of 2016 and prepared in March 2019.

    Learn More
  5. 4.3 in Knightia alta Fossil Fish Green River - Wyoming
    $75.00

    Knightia alta (Leidy, 1873)
    Green River Formation - 50 Million years old Kemmerer, Wyoming, USA
    Knightia : 4.3 in. Plate : 10 x 8 in. (1 inch = 2.54 cm)
    A well preserved Knightia (Herring/Sardine) with a nice rich black color and scales with amazing detail that contrast nicely against the matrix. This fish is from the famous 18 Inch Layer of the Green River Formation!
    This specimen was collected by me in the late fall of 2016 and prepared March 2019.

    Learn More
  6. 4.18 in Knightia alta Fossil Fish Green River - Wyoming
    $0.00

    Knightia alta (Leidy, 1873)
    Green River Formation - 50 Million years old Kemmerer, Wyoming, USA
    Knightia : 4.18 in. Matrix : 10 x 8.25 in. (1 inch = 2.54 cm)
    A well preserved Knightia (Herring/Sardine) with a nice rich black color and scales with amazing detail that contrast nicely against the matrix. This fish is from the famous 18 Inch Layer of the Green River Formation!
    This specimen was collected by me in the late fall of 2016 and prepared March 2019.

    Learn More
  7. 2.58 in Diplomystus Green River Fossil Fish - Wyoming
    $55.00

    Diplomystus dentatus (Cope, 1877)

    Green River Formation - 50 Million years old
    Kemmerer, Wyoming, USA

    Diplomystus : 2.58 in.
    Matrix : 10.25 x 8.1 in.
    (1 inch = 2.54 cm)

    A nice a well preserved Diplomystus fossil fish from the famous 18 Inch Layer of the Green River Formation.

    This specimen was collected by us in the Fall of 2016 and prepared in March 2019.

    Learn More
  8. 3.6 in Knightia alta Fossil Fish Green River - Wyoming
    $45.00

    Knightia alta (Leidy, 1873)
    Green River Formation - 50 Million years old Kemmerer, Wyoming, USA
    Knightia : 3.67 in. Matrix : 10.1 x 8.1 in. (1 inch = 2.54 cm)
    A well preserved Knightia (Herring/Sardine) with a nice rich burgundy and black color and scales with amazing detail that contrast nicely against the matrix. This fish is from the famous 18 Inch Layer of the Green River Formation!
    This specimen was collected by me in the late fall of 2016 and prepared March 2019.

    Learn More
  9. 4.6 in Knightia alta Fossil Fish Green River - Wyoming
    $65.00

    Knightia alta (Leidy, 1873)
    Green River Formation - 50 Million years old Kemmerer, Wyoming, USA
    Knightia : 4.67 in. Matrix : 8 x 7.25 in. (1 inch = 2.54 cm)
    A well preserved Knightia (Herring/Sardine) with a nice rich black color and scales with amazing detail that contrast nicely against the matrix. This fish is from the famous 18 Inch Layer of the Green River Formation!
    This specimen was collected by me in the late fall of 2016 and prepared March 2019.

    Learn More
  10. 4.6 in Diplomystus Green River Fossil Fish - Wyoming
    $25.00

    Diplomystus dentatus (Cope, 1877)

    Green River Formation - 50 Million years old
    Kemmerer, Wyoming, USA

    Diplomystus : 4.6 in.
    Matrix : 7.8 x 6.25 in.
    (1 inch = 2.54 cm)

    A nice a well preserved Diplomystus fossil fish from the famous 18 Inch Layer of the Green River Formation.

    This specimen was collected by us in the Fall of 2016 and prepared in March 2019.

    Learn More

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