Authors: Purdy, RW Schneider, VP Applegate, SP McLellan, JH Meyer, RL Slaughter, BH

Citation: Rw. Purdy et al., The neogene sharks, rays, and bony fishes from Lee Creek Mine,, Aurora, North Carolina, SM C PALEOB, 90, 2001, pp. 71-202

Authors: Sour-Tovar, F Quiroz-Barroso, SA Applegate, SP

Citation: F. Sour-tovar et al., Presence of Helicoprion (Chondrichthyes, Elasmobranchii) in the Permian Patlanoaya Formation, Puebla, Mexico, J PALEONTOL, 74(2), 2000, pp. 363-366