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| Kingdom Animalia |
| |
Aspidosiphoniformes E. Cutler and Gibbs, 1985 -- valid |
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Golfingiiformes E. Cutler and Gibbs, 1985 -- valid |
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Phascoliidae E. Cutler and Gibbs, 1985 -- valid -- phascolionids |
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Phascolionidae E. Cutler and Gibbs, 1985 -- invalid -- phascolionids |
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Phascolosomatidea E. Cutler and Gibbs, 1985 -- valid |
| |
Phascolosomatiformes E. Cutler and Gibbs, 1985 -- valid |
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Sipunculidea E. Cutler and Gibbs, 1985 -- valid |
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Sipunculiformes E. Cutler and Gibbs, 1985 -- valid |
| |
Themistidae E. Cutler and Gibbs, 1985 -- valid -- themistids |
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