| Vejdovskya ussuriensis Nasonov, 1932 | | w | latest taxonomic authority | |
| Microstomum davenporti Graff, 1911 | | w | latest taxonomic authority | |
| Microstomum lucidum Fuhrmann, 1898 | [with synonyms] | w | latest taxonomic authority | |
| Microstomum mortenseni Riedel, 1932 | | w | latest taxonomic authority | |
| Microstomum ulum Marcus, 1950 | | w | latest taxonomic authority | |
| Pelmatoplana willeyi Busson, 1903 | | w | other taxonomic work | |
| Haplogonaria pellita (Marcus, 1951) | [with synonyms] | w | primary taxonomic authority (describer) | |
| Mecynostomum pellitum Marcus, 1951 | | w | primary taxonomic authority (describer) | 7-8, Figs. 1-5 |
| Cylindrostoma myfflum Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Pseudostomidae Thallagus Marcus, 1951 | [with synonyms] | w | primary taxonomic authority (describer) | 31-32, 113 |
| Thallagus divae Marcus, 1951 | | w | primary taxonomic authority (describer) | 32-33, 34 |
| Plagiostomum clusum Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Plagiostomum kurrum Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Plagiostomum sagax Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Plagiostomum thelotrichum Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Plagiostomidae Tuilica Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Tuilica evelinae Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Urastoma evelinae Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Neokirgellinae Daelja Marcus, 1951 | | w | primary taxonomic authority (describer) | 18-19 |
| Daelja secuta Marcus, 1951 | | w | primary taxonomic authority (describer) | 19-20, Figs. 31-34 |
| Neokirgellinae Kalyla Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Kalyla gabriellae Marcus, 1951 | | w | primary taxonomic authority (describer) | 16-18, Figs. 24-30 |
| Pogaina suslica (Marcus, 1951) | [with synonyms] | w | primary taxonomic authority (describer) | |
| Vejdovskya suslica Marcus, 1951 | | w | primary taxonomic authority (describer) | 13-16, Figs. 16-23 |
| Koinocystididae Rhinolasius Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Rhinolasius sartus Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Placorhynchidae Harsa Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Harsa obnixa Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Brinkmanniella augusti Marcus, 1951 | [with synonyms] | w | primary taxonomic authority (describer) | |
| Lenopharynx triops Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Microstomum breviceps Marcus, 1951 | | w | primary taxonomic authority (describer) | 9-11, Figs. 9-11 |
| Microstomum rhabdotum Marcus, 1951 | | w | primary taxonomic authority (describer) | 11-12, Figs. 12-15 |
| Archiloa thelura (Marcus, 1951) | | w | primary taxonomic authority (describer) | |
| Duplominona mica (Marcus, 1951) | [with synonyms] | w | primary taxonomic authority (describer) | |
| Minona divae Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Minona mica Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Monocelidinae Pistrix Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Pistrix thelura Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Choeradoplana bilix Marcus, 1951 | | w | primary taxonomic authority (describer) | 105-106; Figs. 276-280 |
| Geoplana divae Marcus, 1951 | | w | primary taxonomic authority (describer) | 80-82; Figs. 134, 205-209, 295-296 |
| Geoplana duca Marcus, 1951 | | w | primary taxonomic authority (describer) | 82-84; Figs. 135, 210-215 |
| Geoplana evelinae Marcus, 1951 | | w | primary taxonomic authority (describer) | 85-87; Figs. 136, 216-225, 298-305 |
| Cratera hina (Marcus, 1951) | [with synonyms] | w | primary taxonomic authority (describer) | 87-88; Figs. 137, 226-230, 306 |
| Geoplana leucophryna Marcus, 1951 | | w | primary taxonomic authority (describer) | 88-90; Figs. 138, 231-236, 297 |
| Geoplana pavani Marcus, 1951 | | w | primary taxonomic authority (describer) | 6, 68-69, 93, 95-97, 121, 178-179 |
| Geoplana phocaica Marcus, 1951 | | w | primary taxonomic authority (describer) | 6, 68-69, 93, 95-97, 121, 129, 178-179 |
| Geoplana quagga Marcus, 1951 | | w | primary taxonomic authority (describer) | 97-98; Figs. 142, 252-254 |
| Cratera taxiarcha (Marcus, 1951) | [with synonyms] | w | primary taxonomic authority (describer) | 101-102 ; Figs. 144, 259-264, 310 |
| Geoplana astraea Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Geoplana tapetilla Marcus, 1951 | | w | primary taxonomic authority (describer) | |
| Geoplana trina Marcus, 1951 | | w | primary taxonomic authority (describer) | 102-103; Figs. 145, 265-268 |
| Pasipha astraea (Marcus, 1951) | [with synonyms] | w | primary taxonomic authority (describer) | |
| Pasipha pasipha (Marcus, 1951) | [with synonyms] | w | primary taxonomic authority (describer) | |
| Pasipha tapetilla (Marcus, 1951) | [with synonyms] | w | primary taxonomic authority (describer) | |
| Pasipha trina (Marcus, 1951) | | w | primary taxonomic authority (describer) | |
| Mesoda thelura (Marcus, 1951) | [with synonyms] | w | primary taxonomic authority (describer) | |
| Mesoda gabriellae Marcus, 1949 | [with synonyms] | w | other research on this sp. | 52-54, 117 |
| Geoplana pasipha Marcus, 1951 | | w | primary taxonomic authority (describer) | 91-94; Figs. 139, 237-241 |
| Choeradoplana iheringi Graff, 1899 | | w | other taxonomic work | 103-105; Figs. 269-275 |
| Geobia subterranea Schultze & Müller, 1857 | [with synonyms] | w | other taxonomic work | 106-108; Figs. 281-285 |
| Geoplana pseudorhynchodemus Riester, 1938 | | w | other taxonomic work | 76-78; Figs. 132, 197-202 |
| Geoplana preta Riester, 1938 | | w | other taxonomic work | 74-76; Figs. 131, 194-196 |
| Geoplana goetschi Riester, 1938 | [with synonyms] | w | other taxonomic work | 72-74; Figs.130, 189-193, 293 |
| Geoplana carinata Riester, 1938 | | w | other taxonomic work | 70-72; Figs. 129, 183-188 |
| Geoplana rezendei Schirch, 1929 | | w | other taxonomic work | 69-; Figs. 128, 178-182, 292 |
| Geoplana multicolor Graff, 1899 | | w | other taxonomic work | 67-69; Figs. 127, 175-177, 290-291 |
| Geoplana metzi Graff, 1899 | | w | other taxonomic work | 65-67; Figs. 126, 172-174 |
| Geoplana ferussaci Graff, 1899 | | w | other taxonomic work | 64-65; Figs. 170-171 |
| Geoplana carrierei Graff, 1897 | | w | other taxonomic work | 62-64; Figs. 124, 163-169 |
| Geoplana braunsi Graff, 1899 | | w | other taxonomic work | 60-62; Figs. 123, 160-162, 289 |
| Geoplana bergi Graff, 1899 | | w | other taxonomic work | 58-60; Figs. 122, 155-159, 287-288 |
| Geoplana marginata Schultze & Müller, 1857 | | w | other taxonomic work | 56-58; Figs 121, 151-154, 286 |
| Geoplana vaginuloides (Darwin, 1844) | [with synonyms] | w | other taxonomic work | 54-56; Figs. 120, 146-150 |
| Geoplana notocelis Bresslau, 1930 | | w | other taxonomic work | 84-85, 91, 125 |
| Gusana platei (Graff, 1899) | [with synonyms] | w | other taxonomic work | |
| Issoca rezendei (Schirch, 1929) | [with synonyms] | w | other taxonomic work | |
| Issoca spatulata (Graff, 1899) | | w | other taxonomic work | |
| Notogynaphallia meixneri (Riester, 1938) | [with synonyms] | w | other taxonomic work | |
| Notogynaphallia modesta (Graff, 1899) | [with synonyms] | w | other taxonomic work | |
| Geoplana sexlineata Riester, 1938 | | w | other taxonomic work | |
| Geoplana sexstriata Graff, 1899 | | w | other taxonomic work | |
| Pasipha penhana (Riester, 1938) | [with synonyms] | w | other taxonomic work | |
| Pasipha plana (Schirch, 1929) | [with synonyms] | w | other taxonomic work | |
| Pasipha splendida (Graff, 1899) | [with synonyms] | w | other taxonomic work | |
| Geoplana velutina Riester, 1938 | | w | other taxonomic work | |
| Pseudogeoplana bohlsi (Graff, 1899) | [with synonyms] | w | other taxonomic work | |
| Pseudogeoplana meyerhansi (Fuhrmann, 1914) | [with synonyms] | w | other taxonomic work | |
| Pseudogeoplana nigrofusca (Darwin, 1844) | [with synonyms] | w | other research on this sp. | |
| Pseudogeoplana oerstedi (Graff, 1899) | [with synonyms] | w | other taxonomic work | |
| Pseudogeoplana perspicillata (Graff, 1899) | [with synonyms] | w | other taxonomic work | |
| Pseudogeoplana rostrata (Graff, 1899) | [with synonyms] | w | other taxonomic work | |
| Pseudogeoplana tristriata (Schultze & Müller, 1857) | | w | other taxonomic work | |
| Geoplana ventropunctata Dendy, 1892 | | w | other taxonomic work | |
| Obama divae (Marcus, 1951) | [with synonyms] | w | primary taxonomic authority (describer) | 80-82; Figs. 134, 205-209, 295-296 |
| Geoplana divae Marcus, 1951 | | w | latest taxonomic authority | 80-82; Figs. 134, 205-209, 295-296 |
| Obama evelinae (Marcus, 1951) | [with synonyms] | w | primary taxonomic authority (describer) | 85-87; Figs. 136, 216-225, 298-305 |
| Geoplana evelinae Marcus, 1951 | | w | latest taxonomic authority | 85-87; Figs. 136, 216-225, 298-305 |
| Paraba phocaica (Marcus, 1951) | [with synonyms] | w | primary taxonomic authority (describer) | 6, 68-69, 93, 95-97, 121, 129, 178-179 |
| Geoplana phocaica Marcus, 1951 | | w | latest taxonomic authority | 6, 68-69, 93, 95-97, 121, 129, 178-179 |
| Xerapoa trina Marcus, 1951 | [with synonyms] | w | primary taxonomic authority (describer) | 102-103; Figs. 145, 265-268 |
| Geoplana trina Marcus, 1951 | | w | latest taxonomic authority | 102-103; Figs. 145, 265-268 |
| Geoplana taxiarcha Marcus, 1951 | | w | primary taxonomic authority (describer) | 101-102 ; Figs. 144, 259-264, 310 |
| Geoplana taxiarcha Marcus, 1951 | | w | latest taxonomic authority | 101-102 ; Figs. 144, 259-264, 310 |
| Geoplana hina Marcus, 1951 | | w | primary taxonomic authority (describer) | 87-88; Figs. 137, 226-230, 306 |
| Geoplana hina Marcus, 1951 | | w | latest taxonomic authority | 87-88; Figs. 137, 226-230, 306 |
| Cylindrostomidae Thallagus Marcus, 1951 | | - | primary taxonomic authority (describer) | 31-32, 113 |
| Cylindrostomidae Thallagus Marcus, 1951 | | - | latest taxonomic authority | 31-32, 113 |
| Fecampiida Urastomatidae Marcus, 1951 | | - | primary taxonomic authority (describer) | 33 |
| Geoplana goetschi Marcus, 1951 | | - | primary taxonomic authority (describer) | 6. 68-69, 72, 74-75, 83, 121-123 129, 176 |