Mosquito- Culex damnatorum Scudder
Eocene
Green River Fm.- Parachute Creek Mbr.
Douglas Pass
Colorado, USA.

The Green River Formation is renowned for its exceptional preservation of insects, fish, plants, and other organisms from the warm freshwater environments that existed in western North America during the Eocene. Fossil mosquitoes are uncommon, making specimens such as this an important record of ancient insect life.
Fine 5mm mosquito