| Contents | Classes | Subclasses | Orders | Suborders | Families |
Family RHABDONELLIDAE Kofoid & Campbell, 1929
Lorica conical to chalice-shaped; opening rimmed; aboral horn in some species; wall with vertical ribs; all forms marine (mostly eupelagic); no fossil species.
| Epirhabdonella Kofoid & Campbell, 1939 (syn. Epirrhabdonella). Few species. |
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| Protorhabdonella Jörgensen, 1924 (syn. Protorrhabdonella). Several species. |
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| Rhabdonella Brandt, 1906. Many species. |
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| Rhabdonellopsis Kofoid & Campbell, 1929. Several species. |