Eocene Green River Spider IF-M-PCM-16-083 Jurassic grainstone)

grainstone)

The second oil-shale interval is located in the upper 10 m of the Parachute Creek Member

and albite are also common

This is a good example of the herbaceous vine Cardiospermum

They include:  Chilosia sp

Eocene Green River Spider IF-M-PCM-16-083 Jurassic grainstone)Unidentified Spider aff. Miagrammopes Green River Formation Parachute Creek Member Middle Eocene Uintah County, Utah This is a very excellent fossil spider from the Parachute Creek beds in Utah. All eight legs are present. Leg spread is about 1 cm. Fossil spiders are very rare but this is a very fine specimen. A recent paper by Paul Selden (Arthropoda Selecta V23 2 pp 207 219) adds significant knowledge to fossil spiders from this formation. The upper