are far less abundant than in the lower zone. However they are still abundant and of considerable variety. Phormatosporea commonest, followed by Fungi and Bryozoa. Thickness about 5 1/2 feet. Spirofer regaria in Turbo zone. Clearly differentiated in lithic nature from the coral beds in being a grey-white, granular, heavy - bodied limestone with silicious nodules groups. Of the latter one most persistent among the top is made up of separated valves of S. regaria. The common fossil throughout this zone is S. regaria followed by small and quite Helicophyllum. Corals almost absent when compared with the Lower coral bed below. (Associated) Also has Bryozoa.