Berosus tenuis Scudder
Small square of green siltstone. On one surface are two very well preserved beetles. One has both wing cases open and shows detail such as the eyes and the segmented body. Really nice example.
Eocene, Green River Formation, Parachute Creek Member.
Rio Blanco County, Colorado, USA.
Matrix : 2.6 x 2.5 x 0.6cm.
