Kier, P.M. 1966. Noncidaroid Paleozoic echinoids. In: R.C. Moore (ed.), Treatise on Invertebrate Paleontology, U. Echinodermata. 3 (2), pp. U298-U312. GSA & Univ. Kansas Press; Boulder, CO & Lawrence, KS.
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Kier, P. M.
1966
Noncidaroid Paleozoic echinoids
Treatise on Invertebrate Paleontology, U. Echinodermata