Oelofsen, B.W. (1986)
A fossil shark Neurocranium from the Permo- Carboniferous (lowermost Ecca Formation) of South Africa. In Uyeno, T. & Arai, R. & Taniuchi, T. & Matsuura, K. (Eds) Proceedings of the second international conference on Indo-Pacific fishes. Ichthyological Society of Japan, Tokyo: 107–124