Rock Type: Shale
Formation: Kanawha
Interval: Coalburg seam
Age: Middle Pennsylvanian Period, approx. 307 million years.


Calamostachys represents the reproductive organ or cone of the Calamite tree. This is an unusually large specimen, measuring about 3 inches high.

Like cones of modern trees, the cones of the Calamite tree swelled and opened up as they matured, as this specimen illustrates.



Location: Nicholas County, West Virginia; Ramp Run Surface Mine #1, located about 12 miles north of Summersville, West Virginia. Turn west off route 19 north of Summersville onto Spruce Run Road. Follow it about 7 miles. It is now mostly reclaimed, but there is still some good collecting along the exposed rock rip-rap outslope of the sediment ditch along Buffalo Creek.