	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.
	Work & Mason	2019	Mississippian (latest Tournaisian; middle Osagean) ammonoids from the Nancy Member of the Borden Formation, east-central Kentucky N. Jb. Geol. Paläont. Abh. 293/3 (2019), 325–342 Stuttgart