| Protanoplophrya Miyashita, 1929 (syn. Protoanoplophrya). Few species. |
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| Contents | Classes | Subclasses | Orders | Suborders | Families |
Family PROTANOPLOPHRYIDAE Miyashita, 1929
| Syn. | Protoanoplophryidae |
Body laterally compressed and highly Astomatida-like in appearance: often elongate (up to 1,500 ~m), with lengthy macronucleus, thickened pellicle, two rows of numerous contractile vacuoles, dense and uniform ciliation, and budding possible; buccal apparatus, reduced and inconspicuous, located short distance from apical pole; commensal in intestine of prosobranch snails.
| Protanoplophrya Miyashita, 1929 (syn. Protoanoplophrya). Few species. |
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