Authors Year Title
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.
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.
Crick 1911 Notes on Carboniferous Cephalopoda from the Neighbourhood of Exeter.
Quarterly Journal of the Geological Society of London, 1911: 399-414, pl.32; London.
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.
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.
Korn 1997 The Palaeozoic ammonoids of the South Portuguese Zone.
Memórias do Instituto geológico e Mineiro 33: 1-131, 69 text-figs., 16 pls., Lisboa.
Manger & Saunders 1980 Lower Pennsylvanian (Morrowan) ammonoids from the North American midcontinent.
Journal of Paleontology, 54, Suppl.(3): 1-56, fig.1-21, pl.1-6, tab.1-10; Tulsa, Okla.
Quinn 1966 Genus Reticuloceras in America.
Oklahoma Geological Notes, 26 (1): 13-20, fig.1-4; Norman.