Sarcotragus, Genus
Spanioplon, Genus
Sphaerotylus, Genus
Spinularia, Genus
Spirastrella, Genus
Spirastrellidae, Familia
Spirophorida, Ordo
Spongia, Genus
Spongiidae, Familia
Spongionella, Genus
Spongosorites, Genus
Stelletta, Genus
Stelligera, Genus
Stryphnus, Genus
Stylissa, Genus
Styloptilon, Genus
Suberites, Genus
Suberitidae, Familia
Sycandra, Genus
Sycettidae, Familia
Sycon, Genus