1. Genus Desmarella W.S.Kent, 1878
   1. Species Desmarella brachycalyx Skuja, 1939
   2. Species Desmarella irregularis Stokes, 1886
   3. Species Desmarella moniliformis W.S.Kent, 1878
   4. Species Desmarella phalanx (Stein) W.S.Kent, 1878
2. Genus Kentrosiga J.Schiller, 1953
   1. Species Kentrosiga cylindrica J.Schiller, 1953
   2. Species Kentrosiga echina S.M.Tong
   3. Species Kentrosiga setifera J.Schiller, 1953
   4. Species Kentrosiga skujae J.Schiller, 1953
   5. Species Kentrosiga thienemanii Schiller, 1953
   6. Species Kentrosiga thienemannii J.Schiller, 1953
3. Genus Monosiga Kent, 1878
   1. Species Monosiga angustata W.S.Kent, 1878
   2. Species Monosiga baltica Willén
   3. Species Monosiga brevicollis Ruinen, 1938
   4. Species Monosiga brevipes Saville-Kent
   5. Species Monosiga consociata W.S.Kent, 1878
   6. Species Monosiga lagenula Throndsen, 1969
   7. Species Monosiga longipes A.Stokes, 1883
   8. Species Monosiga marina Grøntved, 1952
   9. Species Monosiga natans J.Schiller, 1926
   10. Species Monosiga ovata Kent, 1881
   11. Species Monosiga robusta A.Stokes, 1883
   12. Species Monosiga sinuosa Möbius
   13. Species Monosiga skvortzovii D.Bicudo, 1984
   14. Species Monosiga varians Skuja, 1948
       1. Variety Monosiga varians var. vagans Skuja, 1948 (uncertain)
   15. Species Monosiga vitosinensis Valkanov, 1926
   16. Species Monosiga woodiae A.Stokes, 1883
   17. Species Monosiga gracilis Kent, 1880 accepted as Codosiga gracilis (Kent, 1880) De Saedeleer, 1927 (Synonym)
   18. Species Monosiga lemmermannii Skvortsov & Noda, 1972 accepted as Monosiga ovata Kent, 1881 (synonym)
   19. Species Monosiga globosa W.S.Kent, 1881 (uncertain, uncertain taxonomic status subjected to verification)
   20. Species Monosiga micropelagica Throndsen (uncertain)
4. Genus Proterospongia Kent, 1882
   1. Species Proterospongia dybsoeënsis (Grøntved) A.R.Loeblich III, 1967
   2. Species Proterospongia nana (Braarud, 1935) Throndsen, 1974
5. Genus Sphaeroeca Lauterborn, 1894
   1. Species Sphaeroeca laxa S.A.Guarrera, 1985
   2. Species Sphaeroeca salina Bourrelly, 1957
   3. Species Sphaeroeca volvox Lauterborn, 1894
   4. Species Sphaeroeca pedicellata (Oxley) Lemmermann (uncertain, uncertain taxonomic status subjected to verification)
6. Genus Stylochromonas Lackey, 1940
   1. Species Stylochromonas minuta Lackey
7. Genus Diplosigopsis Francé, 1897 (uncertain > nomen dubium)
   1. Species Diplosigopsis siderotheca Skuja, 1948
   2. Species Diplosigopsis entzii Francé, 1897 (uncertain, uncertain taxonomic status subjected to verification)

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