0.4 Detailed Fossil March Fly Insect Green River FM Uintah County UT Eocene Age
Location: Uintah County, Utah
Weight: 1.3 Ounces
Dimensions: 2.2 Inches Long, 1.9 Inches Wide, 0.4 Inches Thick (Plate)
Insect Dimensions: 0.4 Inches Long, 0.4 Inches Wide
The item pictured is the one you will receive.
50 million years old, Eocene age
March Fly Insect
About 50 million years ago, Fossil Lake existed in what is now southwest Wyoming. Of its estimated 930-square-mile area, roughly 500 square miles of sediment remain. The central 230 square miles of the ancient lake bed are rich in fossils and feature deltas, beaches, springs, and rocks from both deep and nearshore areas.
The lake’s unique chemistry prevented decay, allowing millimeter-thick laminated limestone layers to form, preserving the highest concentration of fossil fish in the world. Fossil Lake offers the best Paleogene record of a freshwater ecosystem, with fish, cyanobacteria, plants, insects, crustaceans, amphibians, alligators, turtles, birds, and mammals, including the oldest pantolestid, an otter-like animal.
The surrounding subtropical terrestrial ecosystem is also represented, with fossils of horses, snakes, lizards, bats, birds, arboreal insectivores, primitive carnivores, insects, and over 325 types of leaves, seeds, and flowers. Fossil Lake captures a remarkable snapshot of an ancient ecosystem.
