1. Genus Amphirhopalum Haeckel, 1881 emend. Nigrini, 1967
   1. Species Amphirhopalum straussii (Haeckel) Johnson & Nigrini, 1980
   2. Species Amphirhopalum ypsilon Haeckel, 1887
2. Genus Dictyocoryne Ehrenberg, 1860
   1. Species Dictyocoryne euclidis
   2. Species Dictyocoryne profunda Ehrenberg, 1872
   3. Species Dictyocoryne truncatum (Ehrenberg) Nigrini & Moore, 1979
3. Genus Euchitonia Ehrenberg, 1860 emend. Nigrini, 1967
   1. Species Euchitonia elegans (Ehrenberg) Haeckel, 1887 accepted as Euchitonia elegans/furcata group (Ehrenberg, 1860) Boltovskoy, 1998
   2. Species Euchitonia furcata Ehrenberg, 1872 accepted as Euchitonia elegans/furcata group (Ehrenberg, 1860) Boltovskoy, 1998
   3. Species Euchitonia triangulum Seguenza, 1880 accepted as Dictyocoryne truncatum (Ehrenberg) Nigrini & Moore, 1979
   4. Species Euchitonia arcata (uncertain > nomen dubium)
   5. Species Euchitonia elegans/furcata group (Ehrenberg, 1860) Boltovskoy, 1998 (uncertain)
4. Genus Hymeniastrum Ehrenberg, 1847
   1. Species Hymeniastrum euclidis Haeckel, 1887 accepted as Dictyocoryne euclidis
5. Subfamily Myelastridae
   1. Genus Myelastrum
      1. Species Myelastrum quadrifolium Takahashi, 1991
      2. Species Myelastrum trinibrachium Takahashi, 1991
6. Subfamily Porodiscidae
7. Genus Porodiscus Haeckel, 1881 emend. Kozlova, 1972
8. Genus Spongaster Ehrenberg, 1860
   1. Species Spongaster pentas Riedel & Sanfilippo, 1970
   2. Species Spongaster tetras Ehrenberg, 1860
9. Genus Spongodiscus Ehrenberg, 1854
   1. Species Spongodiscus biconcavus Haeckel, 1887
   2. Species Spongodiscus resurgens Ehrenberg, 1854
   3. Species Spongodiscus setosus (Dreyer) Petrushevskaya, 1967
10. Genus Spongopyle Dreyer, 1889
    1. Species Spongopyle osculosa Dreyer, 1889
    2. Species Spongopyle setosa Dreyer, 1889 accepted as Spongodiscus setosus (Dreyer) Petrushevskaya, 1967
11. Genus Spongostaurus Haeckel, 1881
12. Genus Spongotrochus Haeckel, 1860
    1. Species Spongotrochus glacialis Popofsky, 1908
    2. Species Spongotrochus venustum (Bailey, 1856) accepted as Stylochlamydium venustum (Bailey) Haeckel, 1887
13. Subfamily Sponguridae Haeckel, 1862 emend. Petrushevskaya, 1983
    1. Genus Ommatogramma Ehrenberg, 1860
       1. Species Ommatogramma dumitricai Petrushevskaya, 1975 accepted as Spongurus cylindricus Haeckel, 1860
    2. Genus Spongocore Haeckel, 1888
       1. Species Spongocore cylindrica (Haeckel, 1862) accepted as Spongurus cylindricus Haeckel, 1860
       2. Species Spongocore diplocylindrica Haeckel, 1887 accepted as Spongurus cylindricus Haeckel, 1860
       3. Species Spongocore puella Haeckel, 1887 accepted as Spongurus cylindricus Haeckel, 1860
    3. Genus Spongurus Haeckel, 1860
       1. Species Spongurus cylindricus Haeckel, 1860
       2. Species Spongurus elliptica (Ehrenberg, 1872)
       3. Species Spongurus pylomaticus Riedel, 1958
14. Genus Stylochlamydium Haeckel, 1887
    1. Species Stylochlamydium asteriscus Haeckel, 1887
    2. Species Stylochlamydium venustum (Bailey) Haeckel, 1887
15. Genus Stylodictya Ehrenberg, 1847 emend. Kozlova, 1972
    1. Species Stylodictya aculeata Joergensen, 1905
    2. Species Stylodictya multispina Haeckel, 1860
    3. Species Stylodictya tenuispina Joergensen, 1905
    4. Species Stylodictya validispina Joergensen, 1905
16. Genus Stylospongia
    1. Species Stylospongia huxleyi Haeckel, 1862

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