Artisia horizontalis

This is a fossilized stem of the tree Cordaites, representing the pattern of the inner pith cavity.

Rock Type: Siltstone
Formation: Kanawha
Interval: Stockton seam

Age: Middle Pennsylvanian Period, approx. 306 million years.

Location: Nicholas County, West Virginia; W & G surface mine, formerly worked by Hobet Mining, about 10 miles north of Summersville on Old Route 19 .