Class Choanoflagellatea Cavalier-Smith, 1998
   Order Craspedida Cavalier-Smith, 1997 [monotypic]
     Family Salpingoecidae Kent, 1880
       01 Genus Astrosiga Kent, 1880
       02 Genus Aulomonas Lackey, 1942
       03 Genus Choanoeca Ellis, 1930
       04 Genus Cladospongia Iyengar & Ramathan, 1940
       05 Genus Codonocladium Stein, 1878
       06 Genus Codonosigopsis Senn, 1900
       07 Genus Codosiga James-Clark, 1866
       08 Genus Desmarella Kent, 1880-1882
       09 Genus Dicraspedella Ellis, 1933
       10 Genus Diploeca Ellis, 1930
       11 Genus Diplosiga Frenzel, 1891
       12 Genus Diplosigopsis Francé, 1897
       13 Genus Kentia Schiller, 1953
       14 Genus Kentrosiga Schiller, 1953 see Genus Desmarella Kent, 1880-1882
       15 Genus Lagenoeca Kent, 1881
       16 Genus Monosiga Kent, 1880-1882
       17 Genus Pachysoeca Ellis, 1930
       18 Genus Proterospongia Kent, 1882
       19 Genus Salpingoecaᵀ James-Clark, 1868
       20 Genus Salpingorhiza Klug, 1936
       21 Genus Sphaeroeca Lauterborn, 1894
       22 Genus Stelexomonas Lackey, 1942
       23 Genus Stylochromonas Lackey, 1940