0.5 Detailed Fossil March Fly Insect Green River FM Uintah County UT Eocene Age
Location: Uintah County, Utah
Weight: 0.5 Ounces
Dimensions: 1.8 Inches Long, 1.7 Inches Wide, 0.2 Inches Thick (Plate)
Insect Dimensions: 0.5 Inches Long, 0.4 Inches Wide
The item pictured is the one you will receive.
50 million years old, Eocene age
March Fly Insect
Fifty million years back, Fossil Lake dominated southwestern Wyoming—a sprawling 930-square-mile aquatic realm that fundamentally transformed our understanding of ancient life. Today, 500 square miles of sediment persist, with the innermost 230 square miles bursting with fossils and geological drama. The lake's extraordinary chemistry was a game-changer: it shut down decay and scavenging entirely, allowing paper-thin limestone layers to accumulate into a treasure trove. The result? The planet's densest concentration of exquisitely preserved fossil fish, bar none. But this specimen tells a far grander story. Fossil Lake captured an entire world in stone—a thriving aquatic realm teeming with cyanobacteria, plants, insects, crustaceans, amphibians, reptiles, and pioneering mammals alongside a lush subtropical landscape of early horses, snakes, lizards, bats, birds, and over 325 plant species. Since the 1870s, paleontologists have extracted countless perfectly preserved organisms from these laminated limestones. This is the Eocene epoch crystallized—an unparalleled window into Paleogene freshwater ecosystems that continues to rewrite evolutionary history.
