Johnson-Ransom, E.D. & Popov, E.V. & Deméré, T.A. & Shimada, K. (2018)
The Late Cretaceous Chimaeroid Fish, Ischyodus bifurcatus Case (Chondrichthyes: Holocephali), from California, USA, and Its Paleobiogeographical Significance.
Paleontological Research, 22(4), 364–372 DOI: 10.2517/2018PR004