Eocene Green River Fly
Chilosia (?) sp. (Scudder)
Green River Formation
Parachute Creek Member
Middle Eocene
Uinta County, Utah
Green River Formation
Parachute Creek Member
Middle Eocene
Uinta County, Utah
This slab has a very well preserved fly. The head, thorax, and abdomen are excellent. Both wings are present and the venation is visible. Several legs can be seen.