	Authors	Year	Title
	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.
	Moore	1950	The Genus Sudeticeras and its Distribution in Lancashire and Yorkshire. Journal of the Manchester Geologists Association., 1950 (2): 31-50, pl.1-3; Manchester.
	Moore & Hodson	1958	Goniatites from the Upper Viséan shales of County Leitrim, Eire. Liverpool and Manchester geological Journal, 2 (1); 86-105, fig.1-21, pl.3-10; Liverpool.