	Authors	Year	Title
	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.
	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.