Solaster, Genus
Solasteridae, Familia
Spatangidae, Familia
Spatangoide, Ordo
Spatangoidea, Ordo
Spatangus, Genus
Spinulosa, Ordo
Spinulosida Perrier, 1884, Ordo
– synonym of Spinulosa, Ordo
Stichasteridae, Familia
Stichastrella, Genus
Strongylocentrotidae, Familia
Strongylocentrotus, Genus
Synaptidae, Familia