Authors Year Title
Bisat 1930 On Cravenoceras leion, sp. nov., the basement goniatite of the Namurian, Upper Carboniferous.
Transactions of the Leeds Geological Association, 1923-1929 (20): 28-32, 1 text-fig., Kendal.
Bisat 1950 The junction faunas of the Viséan and Namurian.
Transactions of the Leeds Geologists Association., 6 (3): 10-26, fig.1, pl.1,2; Kendal.
Calver & Ramsbottom 1961 Stratigraphical Palaeontology. In: J.R. Earp et al.: Geology of the Country around Clitheroe an Nelson.
Memoir of the Geological Survey of Great Britain, Expl. one-inch Geol. Sheet 68, New Series: 174-207, pl.10,11; London.
Korn 1988d Die Goniatiten des Kulmplattenkalkes (Cephalopoda, Ammonoidea; Unterkarbon; Rheinisches Schiefergebirge).
Geologie und Paläontologie in Westfalen, 11: 1-293, fig.1-88, pl.1-60; Münster.
Moore 1939 The goniatite genus Dimorphoceras and its development in the British Carboniferous.
Proceedings of the Yorkshire Geological Society, 24 (2): 103-128, fig.1-21, pl.15;