	Authors	Year	Title
	Boardman, Work & Mapes	1994	Biostratigraphy of Middle and Late Pennsylvanian (Desmoinesian-Virgilian) ammonoids. [Boardman,D.R., D.M.Work, Mapes,R.H. & Barrick,J.E.]. Kansas Geological Survey Bulletin 232, 121 p., 26 figs., 1 tabl., 5 pls., Lawrence, KS.
	Boardman, Work & Mapes	1994	Revision of the family Shumarditidae Plummer & Scott, 1937. Kansas Geological Survey Bulletin, 232: 48-56, figs.23-26.
	Boardman & Work	2004	Stratigraphic distribution of the ammonoids Shumardites and Vidrioceras and implications for the definition of the global Gzhelian Stage, Upper Pennsylvanian Series, Upper Pennsylvanian Series. Newsletter on Carboniferous Stratigraphy, 22: 23-27, 2 fig.
	Mapes & Boardman	1988	The Upper Paleozoic (Pennsylvanian-Permian) ammonoid Emilites. Journal of Paleontology, 62 (1): 69-75, fig.1-6, 1tab.; Lawrence, Kansas.
	Mapes & Boardman	1992	Late Pennsylvanian cephalopods from the Kinney Quarry, Manzanita Mountains, New Mexico. New Mexico Bureau of Mines and Mineral Resources Bulletin 138: 113-118, 3 figs.
	Mapes, Sims & Boardman	1996	Predation on the Pennsylvanian ammonoid Gonioloboceras and its implications for allochthonous vs. autochthonous accumulations of goniatites and other ammonoids. Journal of Paleontology 69: 441-446, 4 figs., Lawrence, KS.
	Pabian, Boardman & Mapes	1983	Late Pennsylvanian (Missourian, Virgilian) ammonoids from Southeastern Nebraska. Proceedings of the Nebraska Academy of Science, 93th Annual Meeting, 1983: 48.
	Work & Boardman	2003	Mapesites, a new Upper Pennsylvanian (lower Virgilian) ammonoid from Kansas. Journal of Paleontology, 77: 1195-1197, 2 fig., Lawrence, KS.
	Work, Boardman & Mapes	2007	The Upper Pennsylvanian (Missourian) Ammonoid Pennoceras from the North Midcontinent. Journal of Paleontology, 81: 591-596, 6 fig.