The Articulate Brachiopods from the Wenlock Series of the Welsh Borderland and South Wales

Part 2 of the monograph on the articulate brachiopods from the Wenlock Series (Silurian) of the Welsh Borderland and South Wales completes the description of the members of the superfamily Orthacea, together with those of the Enteletacea and Triplesiacea. 28 species and subspecies, of which 10 are new, are assigned to 17 genera, one of which, Ambonorthella, is new; their geographical and stratigraphical distributions are outlined.