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.
Brown 1849 Illustrations of the Fossil Conchology of Great Britain and Ireland with descriptions and localities of all the species. Genus V. Goniatites.
28-31, pl.21, Smith, Elder and Co. London.
Demanet 1941 Faune et Stratigraphie de l'Étage Namurien de la Belgique.
Mémoires du Musée Royal d`Histoire Naturelle de Belgique, 97: 1-327, fig.1-49, pl.1-18; Bruxelles.
Foord & Crick 1897 Catalogue of the fossil Cephalopoda in the British Museum (Natural History). Part III, containing the Bactritidae and part  of the Suborder Ammonoidea).
pp.I-XXXIII, 1-303, 145 figs., London.
Frech 1897- Lethaea geognostica oder Beschreibung und Abbildung der für die Gebirgs-Formationen bezeichnendsten Versteinerungen. I. Theil. Lethaea palaeozoica. 2. Band.
35pls, 6maps, 551figs.; Stuttgart.
Hind 1905 Notes on the homotaxial equivalents of the beds which immediately succeed the Carboniferous Limestone in the west of Ireland.
Proceedings of the Royal Irish Academy, 25 (sect. B): 93-116, pl.5-6; Dublin.
Manger 1988 Phylogeny of the Carboniferous Ammonoid Family Dimorphoceratidae.
In: Wiedmann,J. & Kullmann,J. (Eds.), Cephalopods - Present and Past: 29-42, 6 text-figs., Stuttgart.
Schmidt 1929 Tierische Leitfossilien des Karbon.
Gürich,G.: Leitfossilien, 6. Lief.: 1-107, pl.1-23; Berlin (Borntraeger).