	Authors	Year	Title
	Manger	1988	Phylogeny of the Carboniferous Ammonoid Family Dimorphoceratidae. In: Wiedmann,J. & Kullmann,J. (Eds.), Cephalopods - Present and Past: 29-42, 6 text-figs., Stuttgart.
	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;