Pimiento, C. & González-Barba, G. & Ehret, D.J. & Hendy, A.J.W. & Macfadden, B.J. & Jaramillo, C. (2013)
Sharks and Rays (Chondrichthyes, Elasmobranchii) from the Late Miocene Gatun Formation of Panama.
Journal of Paleontology, 87(5), 755–774 DOI: 10.1666/12-117