| Polyposthiidae Polyposthides Palombi, 1924 | | - | primary taxonomic authority (describer) | 34 |
| Polyposthides karimalensis Palombi, 1924 | | w | primary taxonomic authority (describer) | 34 |
| Metaposthia norfolkensis Palombi, 1923 | | - | primary taxonomic authority (describer) | 35 |
| Polyposthiidae Polyposthides Palombi, 1924 | | - | primary taxonomic authority (describer) | 34 |
| Polyposthides karimalensis Palombi, 1924 | | w | primary taxonomic authority (describer) | 34 |
| Euryleptides brasiliensis Palombi, 1923 | | - | primary taxonomic authority (describer) | 37 |
| Notoplana parvula Palombi, 1923 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Stylochoplana siamensis Palombi, 1923 | | w | primary taxonomic authority (describer) | |
| Koinostylochus siamensis (Palombi, 1923) | [with synonyms] | w | primary taxonomic authority (describer) | |
| Cryptocelides samoensis Palombi, 1923 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Polyposthiidae I Metaposthia Palombi, 1923 | | w | primary taxonomic authority (describer) | |
| Metaposthia norfolkensis Palombi, 1923 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Polyposthiidae I Polyposthides Palombi, 1923 | | w | primary taxonomic authority (describer) | |
| Polyposthides affinis Palombi, 1923 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Polyposthides karimatensis Palombi, 1923 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Euryleptididae Euryleptides Palombi, 1923 | | w | primary taxonomic authority (describer) | |
| Euryleptides brasiliensis Palombi, 1923 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Stylochoplana caraibica Palombi, 1923 | | w | other taxonomic work | |
| Polyposthides caraibica Palombi, 1923 | [with synonyms] | w | other taxonomic work | |