May, W.J. (2015)
Chondrichthyans of the Excello Shale (Middle Pennsylvanian) of Rogers County, Oklahoma. Transactions of the Kansas Academy of Science, 118(1–2), 68–74
DOI: 10.1660/062.118.0108

Aber, S.W. & Peterson, N. & May, W.J. & Johnston, P. & Aber, J.S. (2014)
First report of vertebrate fossils in the Snyderville Shale (Oread Formation; Upper Pennsylvanian), Greenwood County, Kansas. Transactions of the Kansas Academy of Science, 117(3–4), 193–202
DOI: 10.1660/062.117.0304

May, W.J. (2013)
First Report of Coelacanth and Hybodont Remains from the Lower Permian Wellington Formation of Oklahoma. Transactions of the Kansas Academy of Science, 115(3–4), 134–138
DOI: 10.1660/062.115.0306

May, W.J. & Hall, J.D. (2002)
Geology and Vertebrate Fauna of a New Site in the Wellington Formation (Lower Permian) of Northern Oklahoma. Oklahoma Geology Notes, 62(2), 63–66