Subfamily Stylocidarinae Mortensen 1928
PaleoDB taxon number: 391473
Parent taxon: Cidaridae according to S. Nisiyama 1966
Sister taxa: Centrocidaris, Cidarinae, Cidarini, Cidaris, Dorocidaris, Hesperocidaris, Prionocidaris, Rhabdocidarinae, Stereocidarinae, Triassicidaris
Subtaxa: Balanocidaris, Firmacidaris