SKU:S969
Rare Eocene Marsh Fly Fossil from Wyoming
Rare Eocene Marsh Fly Fossil from Wyoming
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More than 51 million years ago, this Marsh Fly (Plecia pealei) flew above the quiet freshwater lakes of the Eocene Epoch. When it eventually settled into the still waters below, it was gently covered by fine sediment, beginning an extraordinary journey that would preserve it through deep time and into the present day.
Specimen Details
✓ Species: Plecia pealei (Marsh Fly)
✓ Age: Eocene (~51 million years old)
✓ Formation: Green River Formation
✓ Location: Kemmerer, Wyoming, USA
✓ Specimen Size: Approximately 58 × 54 × 6 mm
✓ Fly Size: Approximately 15 × 8 mm
✓ Weight: 26 g
✓ Authenticity: 100% Authentic natural fossil
✓ Display: Excellent collector, educational, or gift specimen
This authentic fossil was collected from the legendary Green River Formation, one of the world's finest fossil localities. During the Eocene, this region was covered by a series of calm lakes where layer upon layer of ultra-fine sediment accumulated on the lake floor. These sediments rapidly buried plants, fish, insects, and other organisms, protecting them from decay before gradually hardening into limestone over millions of years.
Today, the Green River Formation provides one of the most complete records of an ancient freshwater ecosystem anywhere in the world. Its remarkable preservation has made it internationally famous among scientists and fossil collectors alike. While fossil fish are the formation's best-known treasures, insect fossils such as Plecia pealei are less frequently discovered and offer a fascinating glimpse into the diverse insect life that thrived in these subtropical landscapes.
This Marsh Fly is more than a fossil—it is a genuine survivor from a world long gone. Whether displayed in a collection, used as an educational specimen, or given as a memorable gift, it is a timeless reminder of Earth's incredible natural history.
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Before You Add to Cart ✨
Before You Add to Cart ✨
Online Only: This exact piece is available online only. Similar pieces may be available in store so please check with us before you visit Forever Gems in Franschhoek. Want to view it in-store? Just ask — we’ll arrange it.
Photos: We shoot for accuracy, but colors may vary slightly by screen or lighting.
Size & Weight: Full details are in the description. Please check before buying.
What You See Is What You Get: The item pictured is the exact piece you’ll receive.
Authenticity Guaranteed 🛡️
Authenticity Guaranteed 🛡️
Every specimen at Forever Gems is personally hand-selected and verified. We source exclusively from trusted IMCA-registered dealers, artisanal miners, and long-standing partners we meet with annually at the Tucson Gem and Mineral Show.
Any replica or reproduction fossils are always clearly labeled and sold separately.
Lifetime Authenticity Guarantee
We stand behind the authenticity of every fossil we sell. If a fossil purchased from Forever Gems can be scientifically proven not to be authentic, it may be returned at any time for a full refund, provided supporting proof is supplied. This lifetime authenticity guarantee is in addition to our standard 30-day return policy.
Rather than paper certificates, we rely on over 13 years of experience, expert knowledge, and trusted supplier relationships to ensure authenticity and quality.
Shipping & Collection 🚚
Shipping & Collection 🚚
We ship nationwide with The Courier Guy and RAM Hand-to-Hand Couriers primarily and worldwide with FedEx. Tracking provided on all orders.
Local pickup: Wellington by appointment, Franschhoek Store Fri–Sun, or Franschhoek Village Market Saturdays (weather permitting).
Own courier: We’ll notify you when ready for collection from Wellington, SA.
International: Shipping options show at checkout. Duties/taxes, if any, are paid by the buyer.
All specimens are securely packaged to arrive safely. Questions? Contact us
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