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 1934b Anthracoceras from the E2 Zone of the Namurian.
Transactions of the Leeds Geologists Association, 5: 112-117, fig.1-3; Kendal.
Currie 1954 Scottish Carboniferous Goniatites.
Transactions of the Royal Society. Edinburgh, 62, part 2 (No.14): 527-602, fig.1-9, 1tab., pl.1-4; Edinburgh.
Dorlodot & Delépine 1930 Faune marine du Terrain Houiller de la Belgique. Répartition stratigraphique dans la Région de Charleroi et de la Basse-Sambre.
Mémoires  Inst. géologique Univ. Louvain, 6 (1): 1-112, fig.1-4, pl.1-10; Louvain.
Dorsman 1945 The marine fauna of the Carboniferous in the Netherlands.
Meded. Geol. Sticht., Ser.C-4-3 (3): 1-101, tab.1-10, pl.1-11; Maastricht.
Ruan & Zhou 1987 Carboniferous cephalopods in Ningxia Hui Autonomous Region. [In Chinese, with Engl. summary].
Namurian Strata and Fossils of Ningxia, China: 55-177, 78 text-figs., 15 pls., Nanjing.