Authors	Year	Title
Collinson	1955	Mississippian prolecanitid goniatites from Illinois and adjacent areas. Journal of Paleontology, 29 (3): 433-438, fig.1,2, pl.45; Tulsa, Oklahoma.
Liang & Liu	1987	New material of Carboniferous ammonoids from Xizang and Xinjiang. Acta Paleontologica Sinica, 26 (6): 735-745, fig.1-11, pl.1-3; Beijing.
Smyth	1951	A Viséan cephalopod fauna in the Rush Slates of Co. Dublin. Proceedings of the Royal Irish Academy, 53, B: 289-309, 1fig., pl.11; Dublin.