Calamites cisti
Stigmaria ficoides

This specimen shows a section of stigmaria ficoides. clearly imbedded in the midsection of calamites cisti . Since stigmaria is a fossil root, this suggests this calamite continued to grow, even as it was being buried alive, while various lycopods and perhaps other species took up root and residence in the accumulating sediments.


Rock Type: Sandstone; fine-grained
Formation: Kanawha
Interval: Coalburg seam
Age: Middle Pennsylvanian Period, approx. 307 million years.


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.