Class Anthozoa Ehrenberg, 1831
   Subclass Octocorallia Haeckel, 1866 - octocorals see Subclass Alcyonaria
     Order Alcyonacea Lamouroux, 1816 - soft corals
       Family Isididae Lamouroux, 1812
         Subfamily Keratoisidinae Gray, 1870
           1 Genus Acanella Gray, 1870
           2 Genus Australisis Bayer & Stefani, 1987
           3 Genus Caribisis Bayer & Stefani, 1987
           4 Genus Isidella Gray, 1857
           5 Genus Keratoisis Wright, 1869
           6 Genus Lepidisis Verrill, 1883
           7 Genus Orstomisis Bayer, 1990
           8 Genus Sclerisis Studer, 1878
           9 Genus Tenuisis Bayer & Stefani, 1987