Author: Bockelie, J.F., 1984.:
Title: The Diploporita of the Oslo region, Norway.
Description: Palaeontology, 27(1): pp. 1-68, many photos on 8 pls. incl. several stereo pairs, many drawings in 34 figs., refs. Plain new wrs. - Echinodermata: Cystoidea.

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