Close-up to show how pecopteris pinnules (leaflets) attach to stem by their entire base.

Rock Type: Gray shale
Formation: Allegheny
Interval: Middle Kittanning seam
Age: Middle Pennsylvanian Period, approx. 301 million years.

Location: Lincoln County, West Virginia; Copley Trace Surface Mine #2, located about 10 miles west of Atenville, West Virginia. Take Route 68 west for 3 miles, turn left on Route 68 / 1 (Francis Creek Road) and drive approximately 6 miles. Veer left up Kiah Creek, continue approx. 1.5 miles to Copley Trace. Take next right, proceed up ridge past Meeks Cemetary. Truck access only.