Helderberg Limestone, found Central City area, Somerset County, PA; probably transported from Bedford County, PA
Devonian Age (~400 Million Years ago)
Pycnostylus Ecology: stationary intermediate-level epifaunal microcarnivore. The genus Pycnostylus differs from Amplexus only in the circumstance that it grows in colonies of compound and apparently fasciculated corallites.
Class: Anthozoa, Subclass: †Rugosa