Omphalius (Anadema) H. Adams & A. Adams, 1854 (original combination) Anadema is a genus of sea snails, marine gastropod mollusks in the family Colloniidae.

[1] This name is evidently a junior homonym of Anadema Meuschen, 1787 (Echinodermata).

Species within the genus Anadema include:

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