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2. Aitkenhead N. Chisholm J. I. Stevenson I. P. 1985. Geology of the country around Buxton. British Geological Survey Memoir, England and Wales, Sheet 111.
3. Bisat W. S. 1928. The Carboniferous goniatite zones of England and their continental equivalents. Pp. 117–133 in Compte Rendu du Congrès International de Stratigraphie et de Géologie du Carbonifère, Heerlen 1927.
4. Some British Carboniferous species of the brachiopod genus Leptagonia McCoy;Brand;Geological Survey of Great Britain Bulletin,1972
5. The anatomy of a deep water mud-mound complex to the southwest of the Dinantian platform in Derbyshire, UK