Garman, S. (1913)
The Plagiostomia (Sharks, Skates and Rays). Memoirs of the Museum of Comparative Zoology at Harvard College, 36, 1–528
Breder, C.M. (1928)
Elasmobranchii from Panama to Lower California. Bulletin of the Bingham Oceanographic Collection Yale University, 2(1): 1–13