This information was published in 1966 in An Encyclopaedia of New Zealand, edited by A. H. McLintock. It has not been corrected and will not be updated.
Up-to-date information can be found elsewhere in Te Ara.
Figs. 9–10. Radiolaria (minute Protozoa containing an outer skeleton of silica in the form of a lattice of great variety and geometrical perfection). Fig. 9, spherical radiolarian abundant in Eocene rocks in New Zealand. Fig. 10, radiolarian from the basa