Calliostoma spinulosum Tate, 1893 Laetifautor spinulosus, common name the spine top shell, is a species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.

[1] The height of the shell attains 7 mm.

This marine species occurs off Southern Australia and Western Australia.

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