Brilliantia Leliaert, E.Kelly & Jen.E.Smith, 2022 genus doubtful

Spongocladia Areschoug, 1854 genus accepted

Cladophoropsis Børgesen, 1905 genus accepted

Spongodendron Zanardini, 1878 genus synonym

Pterodictyon J.E.Gray, 1866 genus synonym

Phyllodictyon J.E.Gray, 1866 genus accepted

Struvea Sonder, 1845 genus accepted

Symbiomonas L.Guillou, M.J.Chrétiennot-Dinetr Staay & D.Vaulot, 1999 genus doubtful

Boodlea G.Murray & G.B.De Toni, 1889 genus accepted