In this animal the spire is dwarfed by the spines around the heavily armoured opercular opening, and a flange of new shell in fact covers most of the earlier whorls.
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(c) Ian Alexander 1996-2005
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| In this animal the spire is dwarfed by the spines around the heavily armoured opercular opening, and a flange of new shell in fact covers most of the earlier whorls. |