Phylum Coelenterata Leuckart, 1847 see Infrakingdom Coelenterata Leuckart, 1847
   Class Anthozoa Ehrenberg, 1831
   Class Cubozoa Werner, 1975 - box jellies
   Class †Dipleurozoa Harrington & Moore, 1956
   Class †Hydroconozoa Kordeh, 1963
   Class Hydrozoa Owen, 1843
   Class †Protomedusae
   Class Scyphozoa Goette, 1887 - jellyfish