Eocene Green River Cardiospermum P-PCM-16-002 Agatized represents an early lacustrine phase

represents an early lacustrine phase of Lake Uinta and consists of approximately 29 m of interbedded clay-rich oil shale

Eryma minuta

The most familiar fossils of the Solnhofen Plattenkalk include the early feathered theropod dinosaur Archaeopteryx preserved in such detail that they are among the most famous and most beautiful fossils in the world

This genus is often found preserved in a prone position and has a distinctive widely spread tail fan

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

Eocene Green River Cardiospermum P-PCM-16-002 Agatized represents an early lacustrine phaseCardiospermum coloradensis Green River Formation Parachute Creek Member Middle Eocene Uintah County, Utah This is a good example of the herbaceous vine. In general the impression from the upper Green River are highly variable in shape. They have rounded apices on the lobes and dissections of the leaflets. Fossil examples of Cardiospermum are much more coriaceous that that of living species as evidenced by the heavy deposit of carbon and marked relief