Author	Davey, R.J.
Year	1969c
Journal	Palaeontologia Africana vol.12 pp.25-51 pl.4
Title	The evolution of certain Upper Cretaceous hystrichospheres from South Africa

Abstract Davey, R.J., 1969; The evolution of certain Upper Cretaceous hystrichospheres from South Africa. Palaeontologia Africana vol.12 pp.25-51 pl.4