[Class] Polycystinea Ehrenberg, 1838 - polycystines see Superclass Polycystinia Ehrenberg, 1838
   Order Nassellaria Ehrenberg, 1875 see Class Nassellaria Ehrenberg, 1847
     Family Plagiacanthidae Hertwig, 1879
       Genus Lithomelissa Ehrenberg, 1847
         01 †Lithomelissa challengerae Chen, 1975
         02 †Lithomelissa cheni Caulet, 1991
         03 †Lithomelissa dupliphysa Caulet, 1991
         04 †Lithomelissa ehrenbergii Bütschli, 1881
         05 †Lithomelissa gelasinus O'Connor, 1997
         06 †Lithomelissa haeckeli Bütschli, 1881
         07 Lithomelissa hystrix Jørgensen, 1900
         08 Lithomelissa laticeps Jørgensen, 1905
         09 †Lithomelissa maureenae O'Connor, 1997
         10 †Lithomelissa mitra Bütschli, 1881
         11 Lithomelissa pentacantha (Popofsky, 1913)
         12 †Lithomelissa robusta Campbell & Clark, 1944
         13 Lithomelissa setosa Jørgensen, 1905
         14 †Lithomelissa sphaerocephalis Chen, 1975
         15 Lithomelissa thoracites Haeckel, 1860
         16 †Lithomelissa tricornis Chen, 1975
         17 †Lithomelissa ultima Caulet, 1979
         18 †Lithomelissa? aitai Hollis, 1997