Sulak, K.J. & Macwhirter, P.D. & Luke, K.E. & Norem, A.D. & Miller, J.M. & Cooper, J.A. & Harris, L.E. (2009)
Identification guide to skates (Family Rajidae) of the Canadian Atlantic and adjacent regions. Canadian Technical Report of Fisheries and Aquatic Sciences, 2850, 1–34

McEachran, J.D. & Sulak, K.J. (1994)
Heterogeneity in morphological evolution in skates (Chondrichthyes: Rajoidei) [Abstract]. American Elasmobranch Society 10th Annual Meeting, 2.–8. June 1994, University of Southern California, Los Angeles