Becker, M.A. & Chamberlain, J.A. & Terry, D.O. (2004)
Chondrichthyans from the Fairpoint Member of the Fox Hills Formation (Maastrichtian), Meade County, South Dakota.
Journal of Vertebrate Paleontology, 24(4), 780–793 DOI: 10.1671/0272-4634(2004)024[0780:CFTFMO]2.0.CO;2