| author | date | title | journal / publication | Oya Y, Kimura T, Kajihara H | 2019 | Description of a new species of Paraplehnia (Polycladida, Stylochoidea) from Japan, with inference on the phylogenetic position of Plehniidae. | Zookeys, 864: 1–13. [doi: doi: 10.3897/zookeys.864.33955 goto] |
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| Paraplehnia seisuiae Oya, Kimura & Kajihara, 2019 | w | primary taxonomic authority (describer) | ||
| Plehniidae Paraplehnia Hyman, 1953 | w | latest taxonomic authority | ||
| Plehniidae Diplehnia Faubel, 1983 | w | other taxonomic work | 10 (validity questioned) | |
| Stylochoidea Plehniidae Bock, 1913 [sensu Prudhoe, 1985] | [with synonyms] | w | latest taxonomic authority | 7, 9-10 |
| Paraplehnia japonica (Bock, 1923) | [with synonyms] | w | latest taxonomic authority | 8 |