Ivanov, A.O. & Duffin, C.J. & Naugolnykh, S.V. (2017)
A new euselachian shark from the early Permian of the Middle Urals, Russia. Acta Palaeontologica Polonica, 62(2), 289–298
DOI: 10.4202/app.00347.2017

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