| Adiaphanida Prolecithophora Karling, 1940 | | w | other taxonomic work | |
| Allostoma catinosa (Beklemischev, 1927) | [with synonyms] | w | other taxonomic work | 154-156 |
| Allostoma pallidum Beneden, 1861 | [with synonyms] | w | latest taxonomic authority | 153 |
| Archimonotresis limophila Meixner, 1938 | [with synonyms] | w | latest taxonomic authority | 151-152 |
| Prolecithoplana lutheri Karling, 1940 | | w | latest taxonomic authority | 151-152 |
| Pseudostomum klostermanni (Graff, 1874) | [with synonyms] | w | other taxonomic work | 152 |
| Pseudostomum quadrioculatum (Leuckart, 1847) | [with synonyms] | w | other taxonomic work | 152 |
| Multipeniata (Multipeniata) kho Nasonov, 1927 | | w | latest taxonomic authority | |
| Euneoophora Rhabdocoela Ehrenberg, 1831 | | w | other taxonomic work | |
| Jenseniidae Alexlutheria Karling, 1956 | | w | other taxonomic work | 658-659 |
| Jenseniidae Axiola Luther, 1955 | [with synonyms] | w | other taxonomic work | 662 |
| Axiola luetjohanni (Ax, 1952) | [with synonyms] | w | latest taxonomic authority | 662 |
| Axiola remanei (Ax, 1952) | [with synonyms] | w | latest taxonomic authority | 662-663 |
| Jenseniidae Beauchampiola Luther, 1957 | [with synonyms] | w | other taxonomic work | 654-655 |
| Dalyelliidae Beauchampiella Luther, 1955 | | w | latest taxonomic authority | 654 |
| Dalyelliidae Gieysztoria Ruebush & Hayes, 1939 | [with synonyms] | w | latest taxonomic authority | 631 |
| Gieysztoria bergi (Beklemischev, 1927) | [with synonyms] | w | latest taxonomic authority | 640 |
| Gieysztoria cuspidata (Schmidt, 1861) | [with synonyms] | w | other taxonomic work | 634-635 |
| Gieysztoria expeditoides Luther, 1955 | [with synonyms] | w | other taxonomic work | 636-638 |
| Gieysztoria knipovici (Beklemischev, 1953) | [with synonyms] | w | latest taxonomic authority | 639-640 |
| Gieysztoria macrovariata (Weise, 1942) | [with synonyms] | w | other taxonomic work | 635 |
| Gieysztoria subsalsa Luther, 1955 | | w | latest taxonomic authority | 639 |
| Gieysztoria triquetra (Fuhrmann, 1894) | [with synonyms] | w | latest taxonomic authority | 636 |
| Gieysztoria virgulifera (Plotnikow, 1906) | [with synonyms] | w | latest taxonomic authority | 634-635 |
| Jenseniidae Halammovortex Karling, 1943 | | w | other taxonomic work | 640-641 |
| Halammovortex macropharynx (Meixner, 1938) | [with synonyms] | w | latest taxonomic authority | 641-643 |
| Halammovortex nigrifrons (Karling, 1935) | [with synonyms] | w | latest taxonomic authority | 646-648 |
| Jenseniidae Jensenia Graff, 1882 | | w | other taxonomic work | 650 |
| Jensenia angulata (Jensen, 1879) | [with synonyms] | w | latest taxonomic authority | 651-652 |
| Dalyelliidae Microdalyellia Gieysztor, 1938 | | w | latest taxonomic authority | 631 |
| Microdalyellia armigera (Schmidt, 1862) | [with synonyms] | w | other taxonomic work | 632-633 |
| Microdalyellia brevimana (Beklemischev, 1921) | [with synonyms] | w | latest taxonomic authority | 633-634 |
| Microdalyellia fusca (Fuhrmann, 1894) | [with synonyms] | w | latest taxonomic authority | 633 |
| Bresslauilla relicta Reisinger, 1929 | | w | latest taxonomic authority | 555-556 |
| Pseudograffilla arenicola Meixner, 1938 | | w | other taxonomic work | 553-555 |
| Pseudograffilla hymanae Mack-Fira, 1974 | | w | other taxonomic work | |
| Haplovejdovskya subterranea Ax, 1954 | | w | latest taxonomic authority | 588-591 |
| Baicalellia brevitubus (Luther, 1918) | [with synonyms] | w | latest taxonomic authority | 593-595 |
| Baicalellia canadensis Ax & Armonies, 1987 | | w | latest taxonomic authority | 602-603 |
| Baicalellia posieti Nasonov, 1930 | | w | latest taxonomic authority | 592-593 |
| Baicalellia subsalina Ax, 1954 | | w | latest taxonomic authority | 595-596 |
| Neokirgellinae Balgetia Luther, 1962 | | w | latest taxonomic authority | 612 |
| Balgetia hyalina Karling, 1962 | [with synonyms] | w | latest taxonomic authority | 612-614 |
| Balgetia semicirculifera Karling, 1962 | [with synonyms] | w | latest taxonomic authority | 614-615 |
| Kirgisellinae Canetellia Ax, 1956 | | w | latest taxonomic authority | 603 |
| Baicalellia beauchampi (Ax, 1956) | [with synonyms] | w | other taxonomic work | 604-605 |
| Baicalellia pusilla (Luther, 1962) | [with synonyms] | w | other taxonomic work | 610-612 |
| Hangethellia calceifera Karling, 1940 | | w | latest taxonomic authority | 608 |
| Kirgisella forcipata Beklemischev, 1927 | | w | latest taxonomic authority | 626-627 |
| Neokirgellinae Pogaina Marcus, 1954 | | w | latest taxonomic authority | 615 |
| Pogaina alaskana Ax & Armonies, 1990 | | w | latest taxonomic authority | 619-620 |
| Pogaina kinnei Ax, 1970 | | w | latest taxonomic authority | 616-617 |
| Pogaina oncostylis Ax & Armonies, 1987 | | w | latest taxonomic authority | 617-618 |
| Selimia vivida Ax, 1959 | | w | latest taxonomic authority | 623-626 |
| Annulovortex monodon Beklemischev, 1953 | | w | latest taxonomic authority | 628 |
| Provorticinae Provortex Graff, 1882 | [with synonyms] | w | latest taxonomic authority | 556-557 |
| Provortex affinis (Jensen, 1878) | [with synonyms] | w | latest taxonomic authority | 577 |
| Gieysztoria maritima Luther, 1955 | [with synonyms] | w | other taxonomic work | |
| Provortex balticus (Schultze, 1851) | [with synonyms] | w | latest taxonomic authority | 557-560 |
| Provortex karlingi Ax, 1951 | | w | latest taxonomic authority | 572-573 |
| Provortex pallidus Luther, 1948 | | w | latest taxonomic authority | 569-571 |
| Provortex psammophilus Meixner, 1938 | | w | latest taxonomic authority | 574-575 |
| Provortex tubiferus Luther, 1948 | | w | latest taxonomic authority | 575-576 |
| Vejdovskya halileimonia Ax, 1960 | | w | other taxonomic work | 586-587 |
| Vejdovskya helictos Ax, 1956 | | w | other taxonomic work | 587-588 |
| Vejdovskya ignava Ax, 1951 | | w | latest taxonomic authority | 584-585 |
| Vejdovskya mesostyla Ax, 1954 | | w | latest taxonomic authority | 582-584 |
| Vejdovskya mesostyla hemicycla Ax, 1960 | | w | latest taxonomic authority | 582-584 |
| Vejdovskya pellucida (Schultze, 1851) | [with synonyms] | w | latest taxonomic authority | 578-581 |
| Vejdovskya simrisiensis Karling, 1957 | | w | latest taxonomic authority | 585 |
| Rhabdocoela Kalyptorhynchia Graff, 1905 | | w | other taxonomic work | 435 |
| Cicerininae Cicerina Giard, 1904 | | w | latest taxonomic authority | 480 |
| Cicerina brevicirrus Meixner, 1928 | | w | latest taxonomic authority | 480-482 |
| Cicerina eucentrota Ax, 1959 | | w | latest taxonomic authority | 483-485 |
| Cicerina tetradactyla Giard, 1904 | | w | latest taxonomic authority | 482-483 |
| Eukalyptorhynchia Zonorhynchus Karling, 1952 | | w | other taxonomic work | 487 |
| Zonorhynchus tvaerminnensis (Karling, 1931) | [with synonyms] | w | other taxonomic work | 487-490 |
| Nannorhynchides nigrescens Evdonin, 1971 | | w | other taxonomic work | 441-443 |
| Cystiplana paradoxa Karling, 1964 | [with synonyms] | w | latest taxonomic authority | 478-480 |
| Eukalyptorhynchia Gnathorhynchidae Meixner, 1929 | | w | latest taxonomic authority | 506 |
| Gnathorhynchus conocaudatus Meixner, 1929 | | w | other taxonomic work | 516 |
| Gnathorhynchus krogeni Karling, 1947 | | w | other taxonomic work | |
| Neognathorhynchus lobatus (Ax, 1952) | [with synonyms] | w | other taxonomic work | 514-515 |
| Odontorhynchus lonchiferus Karling, 1947 | | w | other taxonomic work | 512-514 |
| Prognathorhynchus campylostylus Karling, 1947 | | w | latest taxonomic authority | 506-507 |
| Prognathorhynchus canaliculatus Karling, 1947 | | w | latest taxonomic authority | 508-509 |
| Prognathorhynchus dividibulbosus Ax & Armonies, 1990 | | w | latest taxonomic authority | 509-510 |
| Uncinorhynchus flavidus Karling, 1947 | [with synonyms] | w | latest taxonomic authority | 511-512 |
| Axiutelga aculeata (Ax, 1959) | [with synonyms] | w | latest taxonomic authority | 476-478 |
| Brunetia camarguensis (Brunet, 1965) | [with synonyms] | w | latest taxonomic authority | 458-459 |
| Itaipusa karlingi Mack-Fira, 1968 | | w | other taxonomic work | 460 |
| Reinhardorhynchus scoticus (Karling, 1954) | [with synonyms] | w | other taxonomic work | 460-462 |
| Itaipusa sophiae (Graff, 1905) | [with synonyms] | w | other taxonomic work | 462-463 |
| Itaipusina graefei Karling, 1980 | | w | latest taxonomic authority | 464 |
| Parautelga bilioi Karling, 1964 | [with synonyms] | w | latest taxonomic authority | 464-466 |
| Parautelga kielensis Ax, 1960 | | w | other taxonomic work | 464-466 |
| Pontaralia beklemichevi Mack-Fira, 1968 | | w | latest taxonomic authority | 466-468 |
| Pontaralia relicta (Beklemischev, 1927) | [with synonyms] | w | latest taxonomic authority | 468-469 |
| Pontaralia spinosa (Beklemischev, 1927) | | w | latest taxonomic authority | 469 |
| Utelga heinckei (Attems, 1897) | [with synonyms] | w | other taxonomic work | 470 |
| Utelga pseudoheinckei Karling, 1980 | | w | other taxonomic work | |
| Utelga spinosa (Beklemischev, 1927) | [with synonyms] | w | latest taxonomic authority | 469 |
| Chlamydorhynchus evekuniensis Evdonin, 1977 | | w | latest taxonomic authority | 504-505 |
| Clyporhynchus monolentis Karling, 1947 | | w | other taxonomic work | 506 |
| Placorhynchus dimorphis Karling, 1947 | [with synonyms] | w | latest taxonomic authority | 495-496 |
| Placorhynchus echinulatus Karling, 1947 | | w | latest taxonomic authority | 501-502 |
| Placorhynchus octaculeatus Karling, 1931 | | w | other taxonomic work | 491-494 |
| Placorhynchus octaculeatus octaculeatus Karling, 1931 | | w | latest taxonomic authority | |
| Placorhynchus pacificus Karling, 1989 | | w | latest taxonomic authority | 502-503 |
| Placorhynchus paratetraculeatus Ax & Armonies, 1990 | | w | latest taxonomic authority | 502 |
| Placorhynchus tetraculeatus Armonies & Hellwig, 1987 | | w | latest taxonomic authority | 498-499 |
| Acrorhynchides robustus (Karling, 1931) | [with synonyms] | w | latest taxonomic authority | 436-437 |
| Djeziraia euxinica (Mack-Fira, 1971) | | w | latest taxonomic authority | 438-441 |
| Duplacrorhynchus major Schockaert & Karling, 1970 | | w | latest taxonomic authority | 437-438 |
| Phonorhynchoidinae Phonorhynchoides Beklemischev, 1927 | | w | other taxonomic work | 448 |
| Phonorhynchoides carinostylis Ax & Armonies, 1987 | | w | latest taxonomic authority | 452-453 |
| Phonorhynchoides flagellatus Beklemischev, 1927 | | w | latest taxonomic authority | 448-450 |
| Gemelliclininae Palladia Evdonin, 1977 | | w | other taxonomic work | |
| Palladia nigrescens (Evdonin, 1971) | [with synonyms] | w | latest taxonomic authority | 441-442 |
| Progyrator mamertinus (Graff, 1874) | [with synonyms] | w | latest taxonomic authority | 457 |
| Polycystis naegelii Kölliker, 1845 | [with synonyms] | w | latest taxonomic authority | 456-457 |
| Polycystidinae Phonorhynchus Graff, 1905 | | w | latest taxonomic authority | 443 |
| Phonorhynchus bitubatus Meixner, 1938 | | w | latest taxonomic authority | 445-447 |
| Phonorhynchus pernix Ax, 1959 | | w | latest taxonomic authority | 443-445 |
| Rogneda tripalmata (Beklemischev, 1927) | [with synonyms] | w | other taxonomic work | 457-458 |
| Kalyptorhynchia Schizorhynchia Meixner, 1928 | | w | latest taxonomic authority | 516-517 |
| Schizorhynchia Diascorhynchidae Meixner, 1928 | | w | other taxonomic work | 547 |
| Diascorhynchus caligatus Ax, 1959 | | w | latest taxonomic authority | 549-550 |
| Diascorhynchus lappvikensis Karling, 1963 | | w | other taxonomic work | 551 |
| Diascorhynchus serpens Karling, 1949 | | w | other taxonomic work | 547-549 |
| Baltoplana magna Karling, 1949 | [with synonyms] | w | other taxonomic work | 533-536 |
| Baltoplana valkanovi Ax, 1959 | | w | other taxonomic work | 536 |
| Cheliplanidae Cheliplana de Beauchamp, 1927 | [with synonyms] | w | other taxonomic work | 537 |
| Cheliplana euxeinos Ax, 1959 | | w | latest taxonomic authority | 544 |
| Cheliplana setosa Evdonin, 1971 | | w | latest taxonomic authority | 544-545 |
| Cheliplana stylifera Karling, 1949 | | w | other taxonomic work | 542-543 |
| Cheliplana vestibularis de Beauchamp, 1927 | | w | other taxonomic work | 540-542 |
| Cheliplanilla caudata Meixner, 1938 | | w | other taxonomic work | 546-547 |
| Carcharodorhynchus subterraneus Meixner, 1938 | [with synonyms] | w | latest taxonomic authority | 523-525 |
| Schizorhynchidae Proschizorhynchus Meixner, 1928 | [with synonyms] | w | other taxonomic work | 517 |
| Proschizorhynchus arenarius (de Beauchamp, 1927) | [with synonyms] | w | latest taxonomic authority | 520-521 |
| Proschizorhynchus gullmarensis Karling, 1950 | [with synonyms] | w | latest taxonomic authority | 517-520 |
| Proschizorhynchus tricingulatus Ax, 1959 | [with synonyms] | w | other taxonomic work | 520 |
| Schizorhynchus tataricus Graff, 1905 | | w | latest taxonomic authority | 521 |
| Schizorhynchidae Thylacorhynchus de Beauchamp, 1927 | | w | other taxonomic work | 526 |
| Thylacorhynchus arcassonensis de Beauchamp, 1927 | | w | latest taxonomic authority | 526-527 |
| Thylacorhynchus conglobatus Meixner, 1928 | | w | latest taxonomic authority | 532-533 |
| Thylacorhynchus filostylis Karling, 1956 | | w | latest taxonomic authority | 529-530 |
| Thylacorhynchus pyriferus Karling, 1950 | | w | latest taxonomic authority | 530-532 |
| Rhabdocoela Typhloplanoida Bresslau, 1928-33 | | w | other taxonomic work | 300 |
| Thalassotyphloplanida Byrsophlebidae Graff, 1905 | | w | other taxonomic work | 301 |
| Byrsophlebs dubia (Ax, 1956) | [with synonyms] | w | other taxonomic work | 301-303 |
| Byrsophlebs simplex (Ax, 1959) | [with synonyms] | w | other taxonomic work | 303 |
| Brinkmanniella macrostomoides Luther, 1948 | | w | other taxonomic work | 305=306 |
| Adenorhynchidae Coronhelmis Luther, 1948 | | w | other taxonomic work | 309 |
| Coronhelmis conspicuus Ax, 1994 | | w | other taxonomic work | 315-317 |
| Coronhelmis exiguus Ax, 1994 | | w | other taxonomic work | 323-324 |
| Coronhelmis inornatus Ehlers, 1974 | | w | other taxonomic work | 326 |
| Coronhelmis lutheri Ax, 1951 | | w | other taxonomic work | 310-313 |
| Coronhelmis multispinosus Luther, 1948 | | w | other taxonomic work | 321-323 |
| Coronhelmis noerrevangi Ax, 1994 | | w | other taxonomic work | 319-321 |
| Coronhelmis tripartitus Ehlers, 1974 | | w | other taxonomic work | 325 |
| Coronhelmis urna Ax, 1954 | | w | other taxonomic work | 317-319 |
| Tvaerminnea karlingi Luther, 1943 | | w | latest taxonomic authority | 307-309 |
| Westbladiella obliquepharynx Luther, 1943 | [with synonyms] | w | other taxonomic work | 306-307 |
| Promesostominae Promesostoma Graff, 1882 | [with synonyms] | w | other taxonomic work | 326-327 |
| Promesostoma balticum Luther, 1918 | | w | latest taxonomic authority | 346-348 |
| Promesostoma bilineatum Pereyaslawzewa, 1892 | | w | other taxonomic work | 333-335 |
| Promesostoma bilobatum Ax & Armonies, 1987 | | w | other taxonomic work | |
| Promesostoma caligulatum Ax, 1952 | [with synonyms] | w | latest taxonomic authority | 330-331 |
| Promesostoma cochleare Karling, 1935 | | w | latest taxonomic authority | 344-346 |
| Promesostoma ensifer (Uljanin, 1870) | | w | latest taxonomic authority | 336-337 |
| Promesostoma gallicum Ax, 1956 | | w | latest taxonomic authority | 341-342 |
| Promesostoma marmoratum (Schultze, 1851) | [with synonyms] | w | other taxonomic work | 327-329 |
| Promesostoma minutum Ax, 1956 | | w | latest taxonomic authority | 331-333 |
| Promesostoma nynaesiense Karling, 1957 | | w | other taxonomic work | 335 |
| Promesostoma rostratum Ax, 1951 | | w | latest taxonomic authority | 337-340 |
| Promesostoma teshirogii Ax, 1992 | | w | latest taxonomic authority | 342-344 |
| Anthopharynx sacculipenis Ehlers, 1972 | | w | other research on this sp. | |
| Anthopharynx vaginatus Karling, 1940 | | w | latest taxonomic authority | 433-435 |
| Paramesostoma neapolitanum (Graff, 1882) | [with synonyms] | w | latest taxonomic authority | 402-403 |
| Trigonostomidae Beklemischeviella Luther, 1943 | | w | other taxonomic work | 348 |
| Beklemischeviella angustior Luther, 1943 | | w | latest taxonomic authority | 351-353 |
| Beklemischeviella brevistyla Beklemischev, 1953 | | w | latest taxonomic authority | 351 |
| Beklemischeviella contorta (Beklemischev, 1927) | [with synonyms] | w | other taxonomic work | 348-351 |
| Lutheriella diplostyla den Hartog, 1966 | | w | latest taxonomic authority | 370-372 |
| Messoplana falcata (Ax, 1953) | | w | other taxonomic work | 396-398 |
| Messoplana falcata falcata (Ax, 1953) | | w | latest taxonomic authority | 396-398 |
| Messoplana falcata valida Ax, 1974 | | w | latest taxonomic authority | 396-398 |
| Trigonostomidae Proxenetes Jensen, 1878 | [with synonyms] | w | latest taxonomic authority | 372-373 |
| Proxenetes angustus Ax, 1951 | | w | latest taxonomic authority | 380-382 |
| Proxenetes britannicus den Hartog, 1966 | [with synonyms] | w | latest taxonomic authority | 389-390 |
| Proxenetes cimbricus Ax, 1971 | [with synonyms] | w | latest taxonomic authority | 391-393 |
| Proxenetes cisorius den Hartog, 1966 | [with synonyms] | w | latest taxonomic authority | 387-388 |
| Proxenetes deltoides den Hartog, 1965 | [with synonyms] | w | latest taxonomic authority | 377-379 |
| Proxenetes flabellifer Jensen, 1878 | [with synonyms] | w | latest taxonomic authority | 375-379 |
| Proxenetes flexus Ax, 1971 | [with synonyms] | w | latest taxonomic authority | 395-396 |
| Proxenetes karlingi Luther, 1943 | [with synonyms] | w | latest taxonomic authority | 383-385 |
| Proxenetes minimus den Hartog, 1966 | [with synonyms] | w | latest taxonomic authority | 390-391 |
| Proxenetes pratensis Ax, 1960 | [with synonyms] | w | latest taxonomic authority | 385-387 |
| Proxenetes puccinellicola Ax, 1960 | [with synonyms] | w | latest taxonomic authority | 393-395 |
| Proxenetes simplex Luther, 1948 | [with synonyms] | w | latest taxonomic authority | 380-382 |
| Trigonostomidae Ptychopera den Hartog, 1964 | | w | latest taxonomic authority | 353 |
| Ptychopera alaskana Ax & Armonies, 1990 | | w | latest taxonomic authority | 369-370 |
| Ptychopera avicularis Karling, 1974 | | w | latest taxonomic authority | 367-369 |
| Ptychopera ehlersi Ax, 1971 | | w | latest taxonomic authority | 363-364 |
| Ptychopera hartogi Ax, 1971 | | w | latest taxonomic authority | 365-366 |
| Ptychopera plebeia (Beklemischev, 1927) | [with synonyms] | w | latest taxonomic authority | 354-356 |
| Ptychopera spinifera den Hartog, 1966 | | w | latest taxonomic authority | 358-361 |
| Ptychopera subterranea Ax, 1971 | | w | latest taxonomic authority | 361-363 |
| Ptychopera westbladi (Luther, 1943) Den Hartog, 1964 | [with synonyms] | w | other taxonomic work | 353-354 |
| Trigonostomidae Trigonostomum Schmidt, 1852 | [with synonyms] | w | other taxonomic work | 399 |
| Trigonostomum mirabile (Pereyaslawzewa, 1892) | [with synonyms] | w | other taxonomic work | 401 |
| Trigonostomum venenosum (Uljanin, 1870) | [with synonyms] | w | latest taxonomic authority | 401 |
| Limnotyphloplanida Typhloplanidae Graff, 1905 | | w | latest taxonomic authority | 403-404 |
| Mesostoma lingua (Abildgaard, 1789) | [with synonyms] | w | other taxonomic work | 405-406 |
| Opistomum immigrans Ax, 1956 | | w | latest taxonomic authority | 412-413 |
| Phaenocora subsalina Luther, 1921 | | w | latest taxonomic authority | 411 |
| Hoplopera littoralis Karling, 1957 | | w | latest taxonomic authority | 413-414 |
| Hoplopera pusilla Ehlers, 1974 | | w | latest taxonomic authority | 414-415 |
| Olisthanellinella rotundula Reisinger, 1924 | | w | latest taxonomic authority | 409 |
| Castrada (Castrada) hofmanni Braun, 1885 | | w | latest taxonomic authority | 407-408 |
| Castrada (Castrada) intermedia (Volz, 1898) | [with synonyms] | w | latest taxonomic authority | 408 |
| Castrada (Castrada) lanceola (Braun, 1885) | [with synonyms] | w | latest taxonomic authority | 406-407 |
| Castrada (Castrada) subsalsa Luther, 1946 | | w | latest taxonomic authority | 408-409 |
| Typhloplaninae Haloplanella Luther, 1946 | | w | latest taxonomic authority | 424 |
| Haloplanella curvistyla Luther, 1946 | | w | latest taxonomic authority | 427-428 |
| Haloplanella minuta Luther, 1946 | | w | latest taxonomic authority | 428-429 |
| Haloplanella obtusituba Luther, 1946 | | w | latest taxonomic authority | 425-426 |
| Strongylostoma elongatum spinosum Luther, 1950 | | w | latest taxonomic authority | 410-411 |
| Stygoplanellina halophila Ax, 1954 | | w | latest taxonomic authority | 420-421 |
| Thalassoplanella collaris Luther, 1946 | | w | latest taxonomic authority | 416-418 |
| Thalassoplanina geniculata (Beklemischev, 1927) | [with synonyms] | w | latest taxonomic authority | 418-420 |
| Typhloplana viridata (Abildgaard, 1789) | [with synonyms] | w | latest taxonomic authority | 404-405 |
| Cylindromacrostomum notandum (Ax, 1951) | [with synonyms] | w | other research on this sp. | 147 |
| Paromalostomum dubium (de Beauchamp, 1927) | [with synonyms] | w | latest taxonomic authority | 144-145 |
| Paromalostomum mediterraneum Ax, 1955 | | w | latest taxonomic authority | 146-148 |
| Karlingiinae Paramyozonaria Rieger, 1971 | | w | other taxonomic work | 142 |
| Paramyozonaria simplex Rieger & Tyler, 1974 | | w | latest taxonomic authority | 148-149 |
| Macrostomum bicurvistyla Armonies & Hellwig, 1987 | | w | latest taxonomic authority | 116-118 |
| Macrostomum brevituba Armonies & Hellwig, 1987 | | w | latest taxonomic authority | 105-106 |
| Macrostomum burti Ax & Armonies, 1987 | | w | latest taxonomic authority | 115-116 |
| Macrostomum curvituba Luther, 1947 | | w | latest taxonomic authority | 91-94 |
| Macrostomum distinguendum Papi, 1951 | [with synonyms] | w | latest taxonomic authority | 86-88 |
| Macrostomum ermini Ax, 1959 | | w | latest taxonomic authority | 106-107 |
| Macrostomum hamatum Luther, 1947 | | w | latest taxonomic authority | 119-122 |
| Macrostomum longistyliferum Ax, 1956 | | w | latest taxonomic authority | 111-112 |
| Macrostomum magnacurvituba Ax, 1994 | | w | latest taxonomic authority | 94-97 |
| Macrostomum minutum Luther, 1947 | [with synonyms] | w | latest taxonomic authority | 109-111 |
| Macrostomum mystrophorum Meixner, 1926 | | w | latest taxonomic authority | 113-114 |
| Macrostomum pusillum Ax, 1951 | [with synonyms] | w | latest taxonomic authority | 84-86 |
| Macrostomum rostratum Papi, 1951 | [with synonyms] | w | latest taxonomic authority | 88-89 |
| Macrostomum tenuicauda Luther, 1947 | | w | latest taxonomic authority | 108-109 |
| Euneoophora Proseriata Meixner, 1938 | | w | other taxonomic work | 165 |
| Coelogynoporidae Coelogynopora Steinböck, 1924 | | w | other taxonomic work | 223-224 |
| Coelogynopora axi Sopott, 1972 | | w | other taxonomic work | 237-238 |
| Coelogynopora biarmata Steinböck, 1924 | [with synonyms] | w | other taxonomic work | 224 |
| Coelogynopora bresslaui Steinböck, 1924 | | w | latest taxonomic authority | 244-245 |
| Coelogynopora falcaria Ax & Sopott-Ehlers, 1979 | | w | other taxonomic work | 240-242 |
| Coelogynopora gynocotyla Steinböck, 1924 | | w | other taxonomic work | 245-246 |
| Coelogynopora hangoensis Karling, 1953 | | w | other taxonomic work | 231-233 |
| Coelogynopora scalpri Ax & Sopott-Ehlers, 1979 | | w | other taxonomic work | 242-243 |
| Coelogynopora schulzii Meixner, 1938 | | w | other taxonomic work | 227-231 |
| Coelogynopora sequana Sopott-Ehlers, 1992 | [with synonyms] | w | other taxonomic work | 244 |
| Coelogynopora tenuiformis Karling, 1966 | | w | other taxonomic work | 248 |
| Invenusta paracnida (Karling, 1966) | | w | other taxonomic work | 249-250 |
| Archiloa petiti Ax, 1956 | | w | other taxonomic work | 209 |
| Archiloinae Archilina Ax, 1959 | | w | other taxonomic work | 199 |
| Archilina duplaculeata (Ax & Armonies, 1990) | [with synonyms] | w | other taxonomic work | 200-201 |
| Archilina endostyla Ax, 1959 | [with synonyms] | w | other taxonomic work | 199-200 |
| Archiloinae Archilopsis Meixner, 1938 | | w | other taxonomic work | 212-213 |
| Archilopsis arenaria Martens, Curini-Galletti & Pucinelli, 1989 | | w | other taxonomic work | 217 |
| Archilopsis unipunctata (Fabricius, 1826) | [with synonyms] | w | other taxonomic work | 213 |
| Tajikina tajikai (Ax & Armonies, 1990) | [with synonyms] | w | other taxonomic work | 205 |
| Cannoninae Pseudomonocelis Meixner, 1943 | | w | other taxonomic work | 171 |
| Pseudomonocelis agilis (Schultze, 1851) | [with synonyms] | w | other taxonomic work | 171-173 |
| Duplominona istanbulensis (Ax, 1959) | [with synonyms] | w | other taxonomic work | 184 |
| Minona baltica Karling & Kinnander, 1953 | | w | other taxonomic work | |
| Minona dolichovesicula Tajika, 1982 | [with synonyms] | w | other taxonomic work | 179 |
| Minona gigantea Ax & Armonies, 1990 | | w | latest taxonomic authority | 177 |
| Minona trigonopora Ax, 1956 | | w | latest taxonomic authority | 181-184 |
| Monocelidinae Monocelis Ehrenberg, 1831 | [with synonyms] | w | other taxonomic work | 168 |
| Monocelis fusca Örsted, 1843 | [with synonyms] | w | other taxonomic work | 170-171 |
| Monocelis lineata (Müller, 1773) | [with synonyms] | w | other taxonomic work | 169-170 |
| Paramonotus hamatus (Jensen, 1878) | [with synonyms] | w | latest taxonomic authority | 191 |
| Nematoplana coelogynoporoides Meixner, 1938 | | w | other taxonomic work | 285-286 |
| Lithophora Otoplanidae Hallez, 1892 | | w | latest taxonomic authority | 250-253 |
| Otoplanidae Archotoplaninae Ax, 1956 | | w | latest taxonomic authority | 253-254 |
| Archotoplaninae Archotoplana Ax, 1956 | | w | latest taxonomic authority | 253-254 |
| Archotoplana holotricha Ax, 1956 | | w | latest taxonomic authority | 254-255 |
| Archotoplana macrostylis Ax & Armonies, 1990 | | w | latest taxonomic authority | 256-257 |
| Bothriomolus balticus Meixner, 1938 | | w | other taxonomic work | 268-271 |
| Otoplaninae Itaspiella Ax, 1956 | | w | other taxonomic work | 262-264 |
| Itaspiella helgolandica (Meixner, 1938) | [with synonyms] | w | other taxonomic work | 262 |
| Notocaryoplanella glandulosa (Ax, 1951) | | w | other taxonomic work | 264-266 |
| Otoplaninae Notocaryoplana Steinböck, 1935 | [with synonyms] | w | other taxonomic work | 264-266 |
| Notocaryoplana arctica Steinböck, 1935 | [with synonyms] | w | other taxonomic work | 264-266 |
| Orthoplana sewardensis Ax & Armonies, 1990 | | w | latest taxonomic authority | 261-262 |
| Otoplana bosporana Ax, 1959 | | w | latest taxonomic authority | 258-259 |
| Otoplanella schulzi (Ax, 1951) | [with synonyms] | w | other taxonomic work | 266-268 |
| Parotoplanella progermaria Ax, 1956 | | w | latest taxonomic authority | 275-276 |
| Parotoplaninae Philosyrtis Giard, 1904 | | w | latest taxonomic authority | 281-282 |
| Philosyrtis fennica Ax, 1954 | | w | latest taxonomic authority | 282-284 |
| Philosyrtis rotundicephala Sopott, 1972 | | w | other taxonomic work | 284-285 |
| Parotoplaninae Postbursoplana Ax, 1956 | | w | other taxonomic work | 271 |
| Postbursoplana fibulata Ax, 1956 | | w | latest taxonomic authority | 273 |
| Praebursoplana subsalina Ax, 1956 | | w | other taxonomic work | 274-275 |
| Parotoplaninae Pseudosyrtis Ax, 1956 | | w | latest taxonomic authority | 277-278 |
| Pseudosyrtis fluviatilis (Gieysztor, 1938) | [with synonyms] | w | latest taxonomic authority | 281 |
| Pseudosyrtis neiswestnovae Riemann, 1965 | | w | other taxonomic work | 280-281 |
| Pseudosyrtis subterranea (Ax, 1951) | [with synonyms] | w | latest taxonomic authority | 278-280 |
| Triporoplana synsiphonioides Ax, 1956 | | w | latest taxonomic authority | 277 |
| Otomesostoma auditivum (Forel & du Plessis, 1874) | [with synonyms] | w | other taxonomic work | 165 |
| Adiaphanida Tricladida Lang, 1884 | | w | other taxonomic work | 287-288 |
| Tricladida Maricola Hallez, 1892 | | w | other taxonomic work | 288-289 |
| Pentacoelum punctatum (Brandtner, 1935) | [with synonyms] | w | latest taxonomic authority | 293-294 |
| Paucumara trigonocephala (Ijima & Kaburaki, 1916) | [with synonyms] | w | other taxonomic work | 291 |
| Uteriporus vulgaris Bergendal, 1890 | [with synonyms] | w | other taxonomic work | 290-291 |
| Cercyra hastata Schmidt, 1861 | [with synonyms] | w | latest taxonomic authority | 289-290 |
| Sabussowia punctata Brandtner, 1935 | | w | latest taxonomic authority | 293-294 |
| Procerodes littoralis (Ström, 1768) | [with synonyms] | w | latest taxonomic authority | 294-295 |
| Procerodes lobatus (Schmidt, 1862) | [with synonyms] | w | other taxonomic work | 296 |
| Procerodes plebeia (Schmidt, 1861) | [with synonyms] | w | other taxonomic work | 295296 |
| Dugesia lugubris (Schmidt, 1861) | | w | other taxonomic work | 298 |
| Polycelis tenuis Ijima, 1884 | [with synonyms] | w | other taxonomic work | 298-299 |
| Brederveldia bidentata Van der Velde & Van de Winkel, 1975 | | w | latest taxonomic authority | 398-399 |
| Baicalellia anchoragensis Ax & Armonies, 1990 | | w | latest taxonomic authority | 599-600 |
| Baicalellia sewardensis Ax & Armonies, 1990 | | w | latest taxonomic authority | 601-602 |
| Maehrenthalia americana Ax & Armonies, 1990 | [with synonyms] | w | other taxonomic work | 303 |
| Archilopsis marifuga Martens, Curini-Galletti & Pucinelli, 1989 | | w | other taxonomic work | 219 |
| Macrostomum extraculum Ax & Armonies, 1990 | | w | latest taxonomic authority | 97-99 |
| Coelogynopora sewardensis Ax & Armonies, 1990 | | w | other taxonomic work | 233-235 |
| Alaskaplana velox Ax & Armonies, 1990 | | w | latest taxonomic authority | 259-261 |
| Postbursoplana pontica Ax, 1959 | | w | other taxonomic work | 272-273 |
| Phonorhynchoides haegheni Artois & Schockaert, 2001 | | w | other taxonomic work | 453-456 |
| Macrostomum longituba Papi, 1953 | | w | latest taxonomic authority | 112-113 |
| Vejdovskya parapellucida Ax, 1997 | | w | latest taxonomic authority | 581-582 |
| Japanoplana insolita Ax, 1994 | | w | latest taxonomic authority | 168-169, Fig. 66 |
| Coelogynopora visurgis Sopott-Ehlers, 1989 | | w | other taxonomic work | 246-247 |
| Baicalellia rectis Ax, 2008 | | w | primary taxonomic authority (describer) | 597-599 |
| Halammovortex promacropharynx Ax, 2008 | | w | primary taxonomic authority (describer) | 643-646 |
| Macrostomum uncinatum Ax, 2008 | | w | primary taxonomic authority (describer) | 80-81 |
| Provortex sp. Ax & Armonies, 1987 | | - | latest taxonomic authority | 560-568 |
| impeditus sp. A Ax, 1995 | | - | latest taxonomic authority | |
| Macrostomum clavituba Ax, 2008 | | w | primary taxonomic authority (describer) | 96-97 |
| Macrostomum gallicum Ax, 2008 | | w | primary taxonomic authority (describer) | 99-100 |
| Macrostomum guttulatum Ax, 2008 | | w | primary taxonomic authority (describer) | 100-102 |
| Macrostomum rectum Ax, 2008 | | w | primary taxonomic authority (describer) | 103-104 |
| Macrostomum flexum Ax, 2008 | | w | primary taxonomic authority (describer) | 104-105 |
| Macrostomum semicirculatum Ax, 2008 | | w | primary taxonomic authority (describer) | 114-115 |
| Macrostomum bellebaruchae Ax, 2008 | | w | primary taxonomic authority (describer) | 118-119 |
| Macrostomum acutum Ax, 2008 | | w | primary taxonomic authority (describer) | 122-123 |
| Macrostomum calcaris Ax, 2008 | | w | primary taxonomic authority (describer) | 123-125 |
| Macrostomum incurvatum Ax, 2008 | | w | primary taxonomic authority (describer) | 133-134 |
| Minona minuta Ax, 2008 | | w | primary taxonomic authority (describer) | 180-181 |
| Duplominona filiformis Ax, 2008 | | w | primary taxonomic authority (describer) | 186-189 |
| Duplominona japonica Ax, 2008 | | w | primary taxonomic authority (describer) | 189-191 |
| Archilina japonica Ax, 2008 | | w | primary taxonomic authority (describer) | 202-204 |
| Monocelopsis carolinensis Ax, 2008 | | w | primary taxonomic authority (describer) | 220-223 |
| Coelogynopora coronata Ax, 2008 | | w | primary taxonomic authority (describer) | 235-236 |
| Coelogynopora faeroernensis Ax, 2008 | | w | primary taxonomic authority (describer) | 238-240 |
| Coronhelmis subtilis Ax, 2008 | | w | primary taxonomic authority (describer) | 313-314 |
| Ptychopera japonica Ax, 2008 | | w | primary taxonomic authority (describer) | 356-358 |
| Stygoplanellina saksunensis Ax, 2008 | | w | primary taxonomic authority (describer) | 422-424 |
| Haloplanella carolinensis Ax, 2008 | | w | primary taxonomic authority (describer) | 429-432 |
| Phonorhynchus laevitubus Ax, 2008 | | w | primary taxonomic authority (describer) | 447-448 |
| Phonorhynchoides japonicus Ax, 2008 | | w | primary taxonomic authority (describer) | 450-451 |
| Utelga carolinensis Ax, 2008 | | w | primary taxonomic authority (describer) | 470-472 |
| Utelga monodon Ax, 2008 | | w | primary taxonomic authority (describer) | 472-476 |
| Zonorhynchus ruber Ax, 2008 | | w | primary taxonomic authority (describer) | 488-490 |
| Placorhynchus separatus Ax, 2008 | | w | primary taxonomic authority (describer) | 497-498 |
| Placorhynchus magnaspina Ax, 2008 | | w | primary taxonomic authority (describer) | 499-500 |
| Thylacorhynchus macrorhynchos Ax, 2008 | | w | primary taxonomic authority (describer) | 527-529 |
| Cheliplana deverticula Ax, 2008 | [with synonyms] | w | primary taxonomic authority (describer) | 537-540 |
| Provortex impeditus Ax, 2008 | [with synonyms] | w | primary taxonomic authority (describer) | 560-568 |
| Baicalellia nana (Ax, 2008) | [with synonyms] | w | primary taxonomic authority (describer) | 605-608 |
| Pogaina japonica Ax, 2008 | | w | primary taxonomic authority (describer) | 620-621 |
| Pogaina scypha Ax, 2008 | | w | primary taxonomic authority (describer) | 622-623 |
| Provorticidae Eldenia Ax, 2008 | | w | primary taxonomic authority (describer) | 628-630 |
| Halammovortex supranigrifrons Ax, 2008 | | w | primary taxonomic authority (describer) | 647-648 |
| Halammovortex pseudonigrifrons Ax, 2008 | | w | primary taxonomic authority (describer) | 649-650 |
| Beauchampiola canadiana Ax, 2008 | | w | primary taxonomic authority (describer) | 655-657 |
| Beauchampiola mackfirae Ax, 2008 | | w | primary taxonomic authority (describer) | 657-658 |
| Alexlutheria psammophila Ax, 2008 | | w | primary taxonomic authority (describer) | 659-661 |
| Macrostomum spec. 1 Ax, 2008 | | - | primary taxonomic authority (describer) | 135 |
| Macrostomum spec. 2 Ax, 2008 | | - | primary taxonomic authority (describer) | 136 |
| Eldenia reducta Ax, 2008 | | w | primary taxonomic authority (describer) | 628-630 |
| Vejdovskya mesostyla mesostyla Ax 1960 | | w | latest taxonomic authority | 582-584 |
| Phonorhynchopsis haegheni (Artois & Schockaert, 2001) | [with synonyms] | w | other taxonomic work | |
| Canetellia nana Ax, 2008 | | w | primary taxonomic authority (describer) | 605-608 |
| Canetellia nana Ax, 2008 | | w | latest taxonomic authority | 605-608 |