|   | 
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 | 
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;	 
 | 
 
 | 
Moore | 
1946 | 
The Carboniferous goniatite genera Girtyoceras and Eumorphoceras.	 
Proceedings of the Yorkshire Geological Society, 25: 387-445, 31 figs., pl.22-27; Wakefield.	 
 | 
 
 | 
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.	 
 | 
 
 | 
Schindewolf | 
1939 | 
Über den Bau karbonischer Goniatiten.	 
Paläontologische Zeitschrift, 21, 1: 42-67, fig.1-15, pl.1; Berlin.	 
 |