When Lepidodendron branch scars are arranged in a spiral they are given the name Halonia.

Rock Type: Sandstone
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. Follow it about 7 miles. Turn right at the Terry Eagle Coal Company entrance sign.