John Allen Howe

“ The Wenlock limestone occurs either as a series of thin limestones with thin shales or as thick massive beds; it is sometimes hard and crystalline and sometimes soft, earthy or concretionary. It is typically developed in Wenlock Edge, where it forms a striking feature for some 20 m. ”

“ Brachiopods are abundant (Atrypa reticularis, Spirifer plicatilis, Rhynchonella cuneata, Orthis, Leptaena, Pentamerus) ; lamellibranchs include the genera Avicula, Cardiola, Grammysia, Murchisonia, Bellcrophon, Omphalotrochus are common gastropod genera. ”