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Cidaroida (Order) ..†Archaeocidaris (Genus) ..†Miocidaris (Genus) ..Psychocidaridae (Family) ..Cidaridae (Family) ....Cidaris (Genus) ....Ctenocidaris (Genus) ....Poriocidaris (Genus) ....Stereocidaris (Genus) ....Stylocidaris (Genus)

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Last updated: 21 Sep 2025