 Saccospyris antarctica
Haecker, 1908 |  Saccospyris preantarctica
Petrushevskaya, 1975 |
 Saturnalis circularis
Haeckel, 1887 |  Schizodiscus favus
(Ehrenberg, 1861) |
 Sethoconus tabulatus
(Ehrenberg, 1873) |  Sethophormis aurelia
Haeckel, 1887 |
 Sethophormis pentalactis
Haeckel, 1887 |  Siphocampe arachnea
(Ehrenberg, 1838) |
 Siphocampe corbula
(Harting, 1863) |  Siphocampe grantmackiei
O 'Connor, 1997 |
 Siphocampe lineata
(Ehrenberg, 1838) |  Siphocampe sp.
(Benson, 1966) |
 Siphonosphaera hyalina
Caulet, 1986 |  Siphonosphaera magnisphaera
Takahashi, 1991 |
 Siphonosphaera socialis
Haeckel, 1887 |  Siphonosphaera vesuvius
Lazarus, 1992 |
 Siphostichartus corona
(Haeckel, 1887) |  Solenosphaera omnitubus
Sanfilippo and Riedel, 1971 |
 Sphaeropyle langii
Dreyer, 1889 |  Sphaeropyle robusta
Kling, 1973 |
 Sphaerostylus cristatus
Blueford, 1982 |  Sphaerostylus nicholasi
Blueford, 1982 |
 Sphaerostylus rosetta
Blueford, 1982 |  Sphaerozoum crassus
Goll, 1980 |
 Sphaerozoum punctatum
Müller, 1858 |  Spirocyrtis gyroscalaris
Nigrini, 1977 |
 Spirocyrtis scalaris
Haeckel, 1887 |  Spirocyrtis subscalaris
Nigrini, 1977 |
 Spongaster tetras
Ehrenberg, 1860 |  Spongasteriscus cruciferus
Clark and Campbell, 1942 |
 Spongocore puella
Haeckel, 1887 |  Spongodiscus biconcavus
Haeckel, 1887 |
 Spongodiscus craticulatus
(Stöhr, 1880) |  Spongodiscus klingi
Caulet, 1986 |
 Spongodiscus resurgens
Ehrenberg, 1854 |  Spongodiscus setosus
(Dreyer, 1889) |
 Spongomelissa dilli
Chen, 1975 |  Spongoplegma variabile
Nakaseko, 1971 |
 Spongopyle osculosa
Dreyer, 1889 |  Spongosphaera streptacantha
Haeckel, 1861 |
 Spongotrochus (?) venustum
(Bailey, 1856) |  Spongotrochus glacialis
Popofsky, 1908 |
 Spongurus sp. cf. S. elliptica
Benson, 1966 |  Stichocorys armata
(Haeckel, 1887) |
 Stichocorys delmontensis
(Campbell and Clark, 1944) |  Stichocorys diploconus
(Haeckel, 1887) |
 Stichocorys johnsoni
Caulet, 1986 |  Stichocorys peregrina
(Riedel, 1953) |
 Stichocorys seriata
Jørgensen, 1905 |  Stichopilium bicorne
Haeckel, 1887 |
 Streblacantha circumtexta
Jørgensen, 1900 |  Stylacontarium bispiculum
Popofsky, 1912 |
 Stylatractus cronos
(Haeckel, 1887) |  Stylatractus neptunus
Haeckel, 1887 |
 Stylatractus pluto
(Haeckel, 1887) |  Stylatractus santaeannae
(Campbell and Clark, 1944) |
 Stylatractus universus
Hays, 1970 |  Stylochlamydium asteriscus
Haeckel, 1887 |
 Stylochlamydium venustum
(Bailey, 1856) |  Stylodictya aculeata
Jørgensen, 1905 |
 Stylodictya ocellata
Ehrenberg, 1873 |  Stylodictya tenuispina
Jørgensen, 1905 |
 Stylodictya validispina
Jørgensen, 1905 |  Stylosphaera coronata coronata
Ehrenberg, 1873 |
 Stylosphaera coronata laevis
Ehrenberg, 1873 |  Stylosphaera radiosa
Ehrenberg, 1854 |
 Stylotrochus (Stylotrochiscus) sol
Campbell and Clark , 1944 |  Styptosphaera spumacea
Haeckel, 1887 |
