Gill, T. (1863)
On the classification of the families and genera of the Squali of California.
Proceedings of the Academy of Natural Sciences of Philadelphia, 14, 483–501
Garman, S. (1913)
The Plagiostomia (Sharks, Skates and Rays).
Memoirs of the Museum of Comparative Zoology at Harvard College, 36, 1–528