| Pseudostylochus aino Kato, 1937 | | - | primary taxonomic authority (describer) | 129-130, Figs. 7,8; Pl. 8, 7 |
| Notoplana septentrionalis Kato, 1937 | | - | primary taxonomic authority (describer) | 127-129, Figs. 5,6; Pl. 8, 4-6 |
| Cryptophallinae Mirostylochus Kato, 1937 | | w | primary taxonomic authority (describer) | |
| Mirostylochus akkeshiensis Kato, 1937 | [with synonyms] | w | primary taxonomic authority (describer) | 124-127, Figs. 1-4; Pl. 8, 1-3 |
| Stylochidae Mirostylochus Kato, 1937 | | w | primary taxonomic authority (describer) | |
| Notoplana septentrionalis Kato, 1937 | | w | primary taxonomic authority (describer) | |
| Notocomplana septentrionalis (Kato, 1937) | [with synonyms] | w | primary taxonomic authority (describer) | |
| Pseudostylochidae Microstylochus Kato, 1937 | | w | primary taxonomic authority (describer) | |
| Microstylochus akkeshiensis Kato, 1937 | | w | primary taxonomic authority (describer) | |
| Ommatoplana akkeshiensis (Kato, 1937) | | w | primary taxonomic authority (describer) | 124 |
| Pseudostylochus aino Kato, 1937 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Mirostylochus akkeshiensis Kato, 1937 | | - | primary taxonomic authority (describer) | 124-127, Figs. 1-4; Pl. 8, 1-3 |
| Mirostylochus akkeshiensis Kato, 1937 | | - | latest taxonomic authority | 124-127, Figs. 1-4; Pl. 8, 1-3 |
