Capture a 50-million-year-old moment in time with this museum-quality slab from the legendary Green River Formation. Two beautifully preserved predatory fish—Mioplosus labracoides and Priscacara serrata—rest together in delicate contrast against the warm-buff limestone, telling the story of an ancient freshwater lake that once covered what is now Kemmerer, Wyoming.

Key Features

• Authentic Middle Eocene (Lutetian, ~48–41 Ma) fossil slab
  Formed during a period when subtropical climates nurtured exceptional biodiversity.

• Dual-Specimen Display
  · Mioplosus labracoides – sharp-toothed “perch-like” hunter
  · Priscacara serrata – deep-bodied schooling fish prized for its spiny dorsal fin
  Their co-occurrence makes this slab scientifically and aesthetically rare.

• Generous Size – 50 × 40 cm (19.7 × 15.7 in)
  Ideal for wall mounting or tabletop presentation; thin-cut to reduce weight while retaining strength.

• Natural Matrix, Minimal Preparation
  Original quarry face from the Fossil Butte Member (FMT) with light professional stabilisation—no overpainting or composite work.

• Certificate of Authenticity & Documentation
  Includes stratigraphic details, GPS-verified quarry coordinates, and preparation notes.

Why Collect Green River Fossils?

The Green River Formation is celebrated worldwide for producing the most complete vertebrate fossils on Earth. Its fine-grained limestone acts like photographic film, capturing even scales and fin rays in remarkable detail. Owning a slab like this offers:

• Scientific Value – perfect reference specimen for researchers, educators, and students.

• Decorative Impact – natural art that sparks conversation in home, office, or gallery.

• Investment Potential – scarcity of legally mined, undamaged pieces continues to rise.

Display & Care

Mount directly using a French cleat or display on an easel; avoid prolonged direct sunlight to preserve colour contrast. A gentle dusting with a soft brush is all the maintenance required.

Bring a window into the Eocene into your space—this Green River fossil slab marries natural artistry with deep time, making it a centrepiece collection item that will inspire wonder for generations.