Harrell Shale
The Devonian Harrell Formation is a mapped bedrock unit in Pennsylvania, Maryland, West Virginia, and Virginia.
Description
The Harrell Formation was first described by Charles Butts in 1918. Hasson and Dennison state "The Harrell Shale consists of very dark gray, thinly laminated, platy- to sheety-weathering shale underlain in certain areas by the grayish black shale of the Burket Member."Fossils
Hasson and Dennison reported the following fossils from several outcrops of the Harrell:- Bivalvia: Buchiola livonae, B. retrostriata, Paracardium doris, Pterochaenia fragilis, Lunlulicardium
- Cephalopoda: Bactrites aciculum, Probeloceras lutheri
- Cricoconarida : ''Styliolina fissurella''
Notable Exposures