After Parker, 1982

<==o Rhombozoa Krohn, 1839 [Planuloidea, Moruloidea; Mesozoa van Beneden, 1877 (in partim)] sensu Conway-Morris, 1993 (harvasoluiset 1)
   |--o Dicemida
   |  `-- Dicyemidae
   `--o Heterocyemida
      `--o Conocyemidae [Heterocyemidae]
         |-- Conocyema polymorpha
         `-- Microcyema gracilis

Reference(s):