	Authors	Year	Title
	Bisat	1932	On some lower Sabdenian goniatites. Transactions of the Leeds Geological Association, 5: 27-36, pl.1-2; Kendal.
	Hudson	1946	The Namurian goniatites Cravenoceratoides bisati Hudson and Ct. lirifer n.sp. Proceedings of the Yorkshire Geological Society, 25 (6): 375-386, pl.21,21A; Wakefield.