After Parker, 1982

<==o Ctenostomata
   |--o Carnosa
   |  |--o Alcyonidioidea [Alcyonellea; Halcyonellea; Halcyonelloidea]
   |  |  |-- Benedeniporidae
   |  |  |-- Hislopiidae
   |  |  |-- Alcyonidiidae
   |  |  |-- Clavoporidae
   |  |  |-- Flustrellidridae
   |  |  `-- Pherusellidae
   |  `--o PALUDICELLOIDEA
   |     |-- Paludicellidae
   |     |-- Arachnidiidae
   |     |-- Nolellidae
   |     |-- Victorellidae
   |     |-- Immergentiidae
   |     `-- Monobryozoontidae
   `--o STOLONIFERA
      |--o WALKERIOIDEA
      |  |-- Walkeriidae
      |  |-- Mimosellidae
      |  |-- Triticellidae
      |  `-- Hypophorellidae
      |--o PENETRANTRIOIDEA
      |  `-- Penetrantriidae
      `--o VESICULARIOIDEA
         |-- Vesiculariidae
         |-- Buskiidae
         |-- Terebriporidae
         `-- Spathiporidae

Reference(s):