The Echinoid Directory

Huttonechinus spatangiformis (Hutton, 1873); Cobden Limestone, early Oligocene, Greymouth, South Island, New Zealand. Oral plating diagram, from Foster, R. J. & Philip, G. M. 1978. Tertiary holasteroid echinoids from Australia and New Zealand. Palaeontology 21, 791-822 (text-fig. 2).