]
1. Morphological classification (ref. ID; 3570, 3571)
2. Phylogenetic classification (ref. ID; 3547)
[ref. ID; 3570, 3571 (Sebastian A. Gerlach and Franz Riemann 1973, 1974)] ]
Order Araeolaimida De Coninck & Stekhoven, 1933
Family Teratocephalidae Andrassy, 1958
Genus: Euteratocephalus, Teratocephalus
Family Plectidae Orley, 1880
Subfamily Plectinae Orley, 1880
Genus: Anaplectus, Oligoplectus, Pakira, Perioplectus, Plectus
Subfamily Wilsonematinae Chitwood, 1951
Genus: Ereptonema, Pycnolaimus, Tylocephalus, Wilsonema, Wilsotylus
Family Rhabdolaimidae Chitwood, 1951
Genus: Rhabdolaimus, Rogerus, Syringolaimus
Family Isolaimiidae Timm, 1969
Genus: Isolaimium
Family Aulolaimidae Jairajpuri & Hooper, 1968
Genus: Aulolaimus, Gymnolaimus, Pseudoaulolaimus
Family Haliplectidae Chitwood, 1951
Genus: Haliplectus, Setoplectus
Family Leptolaimidae Orley, 1880
Subfamily Peresianinae Vitiello & De Coninck, 1968
Genus: Manunema
Subfamily Leptolaiminae Orley, 1880
Genus: Alaimella, Anomonema, Anonchus, Anthonema, Antomicron, Aphanolaimus, Aplectus, Assia, Bathyonchus, Chronogaster, Cricolaimus, Cynura, Dagda, Deontolaimus, Diodontolaimus, Halaphanolaimus, Leptolaimoides, Leptolaimus, Necolaimus, Paraphanolaimus, Paraplectonema, Plectolaimus, Rhadinema, Stephanolaimus
Subfamily Procamacolaiminae De Coninck, 1965
Genus: Anguinoides, Procamacolaimus
Subfamily Camacolaiminae Micoletzky, 1924
Genus: Acontiolaimus, Camacolaimoides, Camacolaimus, Donsinemella, Ionema, Nemella, Neurella, Onchium
Subfamily Kreisonematinae Khera, 1969
Genus: Kreisonema, Paradoxolaimus
Family Bastianiidae De Coninck, 1935
Genus: Bastiania
Family Axonolaimidae Filipjev, 1918
Subfamily Cylindrolaiminae Micoletzky, 1922
Genus: Aegialoalaimus, Cylindrolaimus, Domorganus, Linolaimus, Parachromagasteriella, Polylaimium
Subfamily Diplopeltinae Filipjev, 1918
Genus: Alaimonema, Araeolaimoides, Araeolaimus, Chitwoodia, Diplopeltis, Metaraeolaimoides, Pararaeolaimus, Pseudaraeolaimus, Southerniella
Subfamily Axonolaiminae Filipjev, 1918
Genus: Apodontium, Ascolaimus, Axonolaimus, Margonema, Odontophora, Parascolaimus, Parodontophora, Pseudolella, Synodontium, Synodontoides
Subfamily Campylaiminae Chitwood, 1937
Genus: Campylaimus, Diplopeltoides, Diplopeltula, Paratarvaia, Striatodora, Tarvaia
Order Desmoscolecida Filipjev, 1929
Family Meyliidae De Coninck, 1965
Genus: Meylia
Family Desmoscolecidae Shipley, 1896
Subfamily Desmoscolecinae Shipley, 1896
Genus: Demanema, Desmoscolex, Paratricoma, Pareudesmoscolex, Protodesmoscolex, Prototricoma, Protricoma, Protricomoides, Quadricoma, Tricoma
Subfamily Greeffiellinae Filipjev, 1929
Genus: Calligyrus, Greeffiella, Hapalomus, Progreeffiella
Order Monhysterida Filipjev, 1929
Family Siphonolaimidae Filipjev, 1918
Genus: Cyartonema, Paraterschellingia, Siphonolaimus, Solenolaimus, Southernia
Family Linhomoeidae Filipjev, 1922
Subfamily Desmolaiminae G. Schneider, 1926
Genus: Anticyathus, Chloronemella, Coninckia, Cryptolaimus, Desmolaimus, Linhomoella, Megadesmolaimus, Metalinhomoeus, Nijhoffia, Paraegialoalaimus, Sarsonia, Terschellingia, Terschellingioides
Subfamily Eleutherolaiminae sub. nov.
Genus: Allgenia, Aponcholaimus, Bathylaimella, Eleutherolaimus, Eumorpholaimus, Filipjeviella, Halicylindrolaimus, Metalaimus, Pandolaimus
Subfamily Linhomoeinae Filipjev, 1922
Genus: Anticyclus, Didelta, Disconema, Halinema, Linhomoeus, Monhysteroides, Paralinhomoeus, Perilinhomoeus, Prolinhomoeus, Sphaerocephalum, Tubolaimoides
Family Monhysteridae De Man, 1876
Subfamily Monhysterinae De Man, 1876
Genus: Amphimonhystera, Amphimonhystrella, Austronema, Branchinema, Cobbia, Cylindrotheristus, Dactylaimus, Diplolaimella, Diplolaimelloides, Echinotheristus, Elzalia, Filipjeva, Gammarinema, Gonionchus, Hofmaenneria, Litotes, Longilaimus, Megalamphis, Mesotheristus, Metadesmolaimus, Monhystera, Monhystrella, Monhystrium, Odontobius, Paramonohystera, Promonhystera, Pseudosteineria, Pseudotheristus, Pulchranemella, Sitadevinema, Sphaerotheristus, Spiramphinema, Spirotheristus, Steineria, Theristus, Trichotheristus, Tripylium, Tubolaimus, Zygonemella
Subfamily Xyalinae
Genus: Cenolaimus, Omicronema, Xenolaimus, Xyala
Subfamily Rhynchonematinae De Coninck, 1965
Genus: Rhynchonema
Family Scaptrellidae De Coninck, 1965
Genus: Scaptrella
Family Sphaerolaimidae Filipjev, 1918
Genus: Buccolaimus, Doliolaimus, Sphaerolaimus
Order Desmodorida De Coninck, 1965
Family Aponchiidae Gerlach, 1963
Genus: Aponchium, Synonema
Family Desmodoridae Filipjev, 1922
Subfamily Microlaiminae Micoletzky, 1922
Genus: Cinctonema, Crassolaimus, Ixonema, Microlaimus, Molgolaimus, Ohridius, Paramicrolaimus, Prodesmodora, Ungulilaimella
Subfamily Spiriniinae Gerlach & Murphy, 1965
Genus: Chromaspirina, Metachromadora, Onyx, Parathalassoalaimus, Polysigma, Pseudometachromadora, Sigmophoranema, Spirinia
Subfamily Pseudonchinae subfam. nov.
Genus: Pseudonchus
Subfamily Stilbonematinae Chitwood, 1936
Genus: Eubostrichus, Laxonema, Laxus, Leptonemella, Robbea, Squanema, Stilbonema
Subfamily Desmodorinae Filipjev, 1922
Genus: Acanthopharyngoides, Acanthopharynx, Amphispira, Desmodora, Metadesmodora, Paradesmodora, Xenonema
Family Xennellidae De Coninck, 1965
Genus: Xennella
Family Ceramonematidae
Subfamily Dasynemellinae De Coninck, 1965
Genus: Dasynemella, Dasynemoides, Pristionema
Subfamily Ceramonematinae Cobb, 1933
Genus: Ceramonema
Subfamily Metadasynemellinae De Coninck, 1965
Genus: Metadasynemella
Subfamily Pselionematinae De Coninck, 1965
Genus: Pselionema, Pterygonema
Family Monoposthiidae Filipjev, 1934
Genus: Monoposthia, Monoposthioides, Nudora, Rhinema
Family Richtersiidae Kreis, 1929
Genus: Pteronium, Richtersia
Family Draconematidae Filipjev, 1918
Genus: Draconema, Drepanonema, Notochaetosoma, Prochaetosoma
Family Epsilonematidae Steiner, 1927
Genus: Archepsilonema, Bathyepsilonema, Epsilonella, Epsilonema, Epsilonematina, Epsilonoides, Metepsilonema
Order Chromadorida Filipjev, 1929
Family Comesomatidae Filipjev, 1918
Subfamily Acantholaiminae subfam. nov.
Genus: Acantholaimus, Tridentellia
Subfamily Dorylaimopsinae De Coninck, 1965
Genus: Dorylaimopsis
Subfamily Comesomatinae Filipjev, 1918
Genus: Comesoma, Metacomesoma, Paracomesoma
Subfamily Sabatieriinae Filipjev, 1934
Genus: Actarjania, Cervonema, Dolichosomatum, Grahamius, Hopperia, Laimella, Mesonchium, Metasabatiera, Notosabatieria, Paramesonchium, Pierrickia, Sabatieria, Ungulilaimus, Vasostoma
Family Chromadoridae Filipjev, 1917
Subfamily Spilipherinae Filipjev, 1918
Genus: Ethmolaimus, Spiliphera, Trichromadorita
Subfamily Chromadorinae Filipjev, 1917
Genus: Atrochromadora, Chromadora, Chromadorella, Chromadorina, Fusonema, Prochromadora, Prochromadorella, Punctodora, Timmia
Subfamily Euchromadorinae subfam. nov.
Genus: Actinonema, Adeuchromadora, Austranema, Dasylaimus, Dicriconema, Euchromadora, Graphonema, Odontocricus, Parapinnanema, Protochromadora, Rhips, Steineridora
Subfamily Hypodontolaiminae De Coninck, 1965
Genus: Chromadorissa, Chromadorita, Deltanema, Denticulella, Dichromadora, Hypodontolaimus, Innocuonema, Megodontolaimus, Neochromadora, Nygmatonchus, Panduripharynx, Ptycholaimellus, Spilophorella, Trochamus
Family Cyatholaimidae Filipjev, 1918
Subfamily Neotonchinae Wieser & Hopper, 1966
Genus: Gomphionema, Neotonchus
Subfamily Achromadorinae subfam. nov.
Genus: Achromadora
Subfamily Pomponematinae subfam. nov.
Genus: Craspodema, Dispira, Minolaimus, Nannolaimoides, Nannolaimus, Parapomponema, Pomponema, Propomponema
Subfamily Paracanthonchinae De Coninck, 1965
Genus: Acanthonchus, Biarmifer, Boreomicrolaimoides, Dentatonema, Paracanthonchus, Paracyatholaimoides, Paracyatholaimus
Subfamily Xenocyatholaiminae subfam. nov.
Genus: Xenocyatholaimus
Subfamily Cyatholaiminae Filipjev, 1918
Genus: Cyatholaimus, Dispirella, Heterocyatholaimus, Longicyatholaimus, Marilynia, Metacyatholaimus, Micracanthonchus, Paralongicyatholaimus, Phyllolaimus, Praeacanthonchus, Xyzzors
Family Choniolaimidae Stekhoven & Adam, 1931
Genus: Choanolaimus, Choniolaimus, Cobbionema, Gammanema, Halichoanolaimus, Latronema, Nunema
Family Selachinematidae
Genus: Cheironchus, Demonema, Kosswigonema, Synonchiella, Synonchium, Trogolaimus
Order Enoplida Filipjev, 1929
Family Tripylidae De Man, 1876
Subfamily Tripylinae De Man, 1876
Genus: Abunema, Andrassya, Paratripyla, Tripyla, Trischistoma
Subfamily Tobrilinae De Coninck, 1965
Genus: Paratrilobus, Tobrilia, Tobriloides, Tobrilus
Subfamily Monochromadorinae Andrassy, 1958
Genus: Monochromadora, Sinanema, Udonchus
Family Prismatolaimidae Micoletzky, 1922
Subfamily Onchulinae Andrassy, 1963
Genus: Cyathonchus, Kinonchulus, Limonchulus, Onchulus, Paronchulus, Pseudonchulus, Stenonchulus
Subfamily Prismatolaiminae Micoletzky, 1922
Genus: Prismatolaimus De Man, 1880
Subfamily Odontolaiminae subfam. nov.
Genus: Odontolaimus
Family Ironidae De Man, 1876
Genus: Conilia, Dolicholaimus, Ironella, Ironus, Parironus, Pheronous, Thalassironus, Trissonchulus
Family Cryptonchidae Chitwood 1937
Genus: Cryptonchulus, Cryptonchus
Family Tripyloididae Filipjev, 1918
Genus: Arenasoma, Bathylaimus, Diplobathylaimus, Ingenia, Paratripyloides, Tripyloides
Family Trefusiidae Gerlach, 1966
Subfamily Trefusiinae Gerlach, 1966
Genus: Alaimonemella, Cytolaimium, Rhabdocoma, Trefusia
Subfamily Halanonchinae Wieser & Hopper, 1967
Genus: Halanonchus
Family Alaimidae Micoletzky, 1922
Genus: Adorus, Alaimus, Amphidelus
Family Oxystominidae Chitwood, 1935
Subfamily Oxystomininae Chitwood, 1935
Genus: Angustinema, Litinium, Nemacoma, Nemanema, Oxystomina, Porocoma, Thalassoalaimus, Wieseria
Subfamily Halalaiminae De Coninck, 1965
Genus: Halalaimus
Subfamily Paroxystomininae De Coninck, 1965
Genus: Maldivea, Paroxystomina
Family Lauratonematidae Gerlach, 1953
Genus: Lauratonema, Lauratonemoides
Family Leptosomatidae Filipjev, 1916
Subfamily Leptosomatinae Filipjev, 1916
Genus: Barbonema, Leptosomatides, Leptosomatina, Leptosomatum, Leptosomella, Parabarbonema, Paraleptosomatides, Platycoma, Platycomopsis, Syringonomus, Tubolaimella
Subfamily Cylicolaiminae Platonova, 1970
Genus: Cylicolaimus, Metacylicolaimus, Paracylicolaimus, Ritenbenkia
Subfamily Synonchinae Platonova, 1970
Genus: Corythostoma, Eusynonchus, Macronchus, Paratuerkiana, Synonchoides, Synonchus, Tuerkiana
Subfamily Thoracostomatinae De Coninck, 1965
Genus: Deontostoma, Pseudocella, Thoracostoma
Family Triodontolaimidae De Coninck, 1965
Genus: Triodontolaimus
Family Anticomidae Filipjev, 1918
Genus: Anticoma, Anticomopsis, Antopus, Paranticoma
Family Phanodermatidae Filipjev, 1927
Genus: Crenopharynx, Dayellus, Klugea, Micoletzkyia, Paraphanoderma, Phanoderma, Phanodermella, Phanodermopsis
Family Enoplidae Dujardin, 1845
Subfamily Thoracostomopsinae Filipjev, 1927
Genus: Thoracostomopsis
Subfamily Chaetonematinae subfam. nov.
Genus: Chaetonema, Donsinema
Subfamily Trileptiinae subfam. nov.
Genus: Fenestrolaimus, Trichenoplus, Trileptium
Subfamily Oxyonchinae De Coninck, 1965
Genus: Hyptiolaimus, Oxyonchus, Parasaveljevia, Saveljevia
Subfamily Enoplolaiminae De Coninck, 1965
Genus: Africanthion, Enoplolaimus, Mesacanthion, Paramesacanthion
Subfamily Enoploidinae De Coninck, 1965
Genus: Cryptenoplus, Enoploides, Epacanthion, Filipjevia, Mesacanthoides, Metenoploides, Parenoplus
Subfamily Enoplinae Dujardin, 1845
Genus: Enoplus, Lineolia, Ruamowhitia
Family Rhabdodemaniidae Filipjev, 1934
Genus: Conistomella, Rhabdodemania
Family Anoplostomatidae fam. nov.
Genus: Anoplostoma
Family Oncholaimidae Filipjev, 1916
Subfamily Pelagonematinae De Coninck, 1965
Genus: Anoncholaimus, Asymmetrella, Bradybucca, Curvolaimus, Fimbrilla, Pelagonema, Phaenoncholaimus, Pseudopelagonema, Vasculonema
Subfamily Krampiinae De Coninck, 1965
Genus: Krampia
Subfamily Oncholaimellinae De Coninck, 1965
Genus: Meroviscosia, Mononcholaimus, Oncholaimelloides, Oncholaimellus, Oncholaimoides, Viscosia
Subfamily Adoncholaiminae subfam. nov.
Genus: Adoncholaimus, Kreisoncholaimus, Metoncholaimoides, Meyersia
Subfamily Oncholaiminae Filipjev, 1916
Genus: Cacolaimus, Metaparoncholaimus, Metoncholaimus, Oncholaimus, Prooncholaimus, Pseudoncholaimus, Wiesoncholaimus
Subfamily Pontonematinae subfam. nov.
Genus: Convexolaimus, Filoncholaimus, Pontonema
Subfamily Octonchinae De Coninck, 1965
Genus: Octonchus
Subfamily Dioncholaiminae De Coninck, 1965
Genus: Dioncholaimus
Family Enchelidiidae Filipjev, 1918
Subfamily Thoonchinae subfam. nov.
Genus: Ditlevsenella, Thoonchus
Subfamily Eurystomininae Chitwood, 1935
Genus: Bolbellia, Eurystomina, Ledovitia, Lyranema, Megeurystomina, Pareurystomina
Subfamily Enchelidiinae Filipjev, 1918
Genus: Calyptronema, Enchelidiella, Enchelidium, Illium, Polygastrophora, Symplocostoma, Symplocostomella
Family Rhaptothyreidae Hope & Murphy, 1969
Genus: Rhaptothyreus
Incertae sedis
Genus: Acmaeolaimus, Amblyura, Colpurella, Diplohystera, Doryonchus, Frostina, Iotalaimus, Litonema, Longitubopharynx, Macfadyenia, Nema, Notocamacolaimus, Notosouthernia, Nuadella, Pelagonemella, Phanoglene, Potamonema, Pseudodilaimus, Pseudorhabdolaimus, Rhabdotoderma, Rhinonema
[Another taxon]
Family Heteroderidae (Filipjev & Schuurmans Stekhoven, 1941) Skarbilovich, 1947 (see: ref. ID; 5922)
Subfamily Heteroderinae Skarbiolovich, 1947
Genus: Heterodera
Superfamily Mononchoidea (Chitwood, 1937) Clark, 1961 (see: ref. ID; 5938)
Family Mononchidae Chitwood, 1937
Genus: Mononchus
Family Arctidorylaimidae (see: ref. ID; 5942)
Genus: Arctidorylaimus
]
Class Secernentea