Gess, R.W. (2011)
High latitude Gondwanan famennian biodiversity patterns : evidence from the South African Witpoort Formation (Cape Supergroup, Witteberg Group). unpublished thesis, Faculty of Science, University of the Witwatersrand, Johannesburg 2011

Gess, R.W. & Coates, M.I. (2015)
High-latitude Chondrichthyans from the Late Devonian (Famennian) Witpoort formation of South Africa. Paläontologische Zeitschrift, 89(2), 147–169
DOI: 10.1007/s12542-014-0221-9

Figueroa, R.T. & da Costa Machado, D.M. (2018)
The Paleozoic ichthyofauna of the Amazonas and Parnaíba basins, Brazil. Journal of South American Earth Sciences, 82, 122–132
DOI: 10.1016/j.jsames.2018.01.001

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, 50(2), 271–284
DOI: 10.1017/pab.2024.1