from “Wikispecies”

<==o Siphonophorida
   |-- Nematozonium [Nematozoniidae]
   |--o Siphonorhinidae
   |  |-- Illacme
   |  |-- Indiozonium
   |  |-- Kleruchus
   |  |-- Siphonorhinus
   |  `-- Teratognathus
   `--o Siphonophoridae
      |-- Annamnium
      |-- Bactrois
      |-- Balizonium
      |-- Bazillozonium
      |-- Californizonium
      |-- Chamberlinium
      |-- Columbianum
      |-- Columbiozonium
      |-- Cordillerium
      |-- Gonatotrichus
      |-- Guatemalium
      |-- Linozonium
      |-- Lomboknium
      |-- Okeanozonium
      |-- Pterozonium
      |-- Rhinosiphora
      |-- Siphonacme
      |-- Siphonocybe
      |-- Siphonophora
      |-- Siphonophorella
      `-- Yukatanium

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