Liu, Z.-H. (1994)
New material of helicoprionid shark from Lianyuan of Hunan.
Vertebrata Palasiatica, 32(2), 127–133
Schnetz, L. & Dunne, E.M. & Feichtinger, I. & Butler, R.J. & Coates, M.I. & Sansom, I.J. (2024)
Rise and diversification of chondrichthyans in the Paleozoic.
Paleobiology, in press DOI: 10.1017/pab.2024.1