	Authors	Year	Title
	Becker & Mapes	2010	Uppermost Devonian ammonoids from Oklahma and their palaeobiogeographic significance. Acta Geologica Polonica, 60 (2): 139-163, 11 fig.
	Over	1992	Conodonts and the Devonian-Carboniferous boundary in the upper Woodford Shale, Arbuckle Mountains, south-central Oklahoma. Journal of Paleontology, 66: 293-211, 7 text-figs., 9 tabls., Lawrence, KS.