Authors Year Title
Bisat 1924 The Carboniferous goniatites of the North of England and their zones.
Proceedings of the Yorkshire Geological Society, 20: 40-124, pl.1-10; Leeds.
Bisat & Hudson 1943 The lower Reticuloceras (R1) goniatite succession in the Namurian of the North of England.
Proceedings of the Yorkshire Geological Society, 24 (6): 383-440, fig.1, pl.23-30; Wakefield.
Brown 1841 Description of some New Species of Fossil Shells, found chiefly in the Vale of Todmorden, Yorkshire.
Transactions Manchester Geological Society 1: 211-232, pl.7, London.
Butcher & Hodson 1960 A Review of the Carboniferous Goniatite Zones in Devon and Cornwall.
Palaeontology, 3 (1): 75-81, pl.17-19; London.
Chalard 1960 Contribution à l'étude du Namurien du Bassin Houiller du Nord de la France. Texte et Planches photographiques.
Thèse, Université de Lille, 1-299, 12 pls.(A-L), Valenciennes.
Lemosquet, Conrad & Manger 1985 Ammononoids. [In: M.Diaz, R.H.Wagner, C.F. Winkler Prins & L.F.Granados, eds., The Carboniferous of the World, 2.]
International Union of Geological Sciences Publication, 20: 367-372, pls.7-10, Madrid.
Manger, Weyant & Pareyn 1985 Mid-Carboniferous ammonoid biostratigraphy, Bechar Region, Algeria.
Courier Forschungsinstitut Senckenberg, 74: 181-196, fig.1-2, pl.1-2; Frankfurt a.M.