The Athol , Bolton , Bookwood , Brecknock , Carpenter , Culleoka , Dormont , Door, Duffield , Frondorf , Hayter , Lamotte , Legore , Loudonville , Manassas , Mechanicsburg , Morrison , Myersville , Neshaminy , Penn , Ryder , Washington , Wheeling , and Williamsburg series are in the same family. Athol, Manassas, and Penn soils have hues redder than 7.5YR in the Bt2 horizon. Bolton soils have rock fragments dominated by chert. Bookwood soils are derived from shale over limestone. Brecknock soils have chroma of 2 or 3 in the B horizon.
Dormont soils have low chroma mottles in the subsoil and substratum.
Door soils have mollic epipedons. Mechanicsburg soils have lithologic discontinuities between 20 and 40 inches. Carpenter, Duffield, Hayter, Lamotte, Morrison, Neshaminy, Washington, Wheeling, and Williamsburg have sola more than 40 inches thick. Legore soils have rock fragments dominated by diabase or diorite and have saprolite within a depth of 40 inches. Myersville soils have rock fragments dominated by greenstone schist.