Achlysiella Hunt, Bridge & Machon, 1989 (basis of record)
Achlysiella Hunt, Bridge & Machon, 1989 (extant flag source)
Acontylus Meagher, 1968 (basis of record)
Acontylus Meagher, 1968 (extant flag source)
Afenestrata Baldwin & Bell, 1985 (extant flag source)
Afenestrata Baldwin & Bell, 1985 (basis of record)
Aglenchus Andrássy, 1954 (basis of record)
Aglenchus Andrássy, 1954 (extant flag source)
Allantonema Leuckart, 1884 (basis of record)
Allantonema Leuckart, 1884 (extant flag source)
Allotylenchus Andrassy, 1984 (extant flag source)
Allotylenchus Andrassy, 1984 (basis of record)
Amplimerlinius Siddiqi, 1976 (extant flag source)
Amplimerlinius Siddiqi, 1976 (basis of record)
Anandranema Poinar, Ferro, Morales & Tesh, 1993 (extant flag source)
Anandranema Poinar, Ferro, Morales & Tesh, 1993 (basis of record)
Anguillonema Fuchs, 1938 (basis of record)
Anguillonema Fuchs, 1938 (extant flag source)
Anguina Scopoli, 1777 (basis of record)
Anguina Scopoli, 1777 (extant flag source)
Antarctenchus Spaull, 1972 (basis of record)
Antarctenchus Spaull, 1972 (extant flag source)
Antarctylus Sher, 1973 (basis of record)
Antarctylus Sher, 1973 (extant flag source)
Aorolaimus Sher, 1963 (basis of record)
Aorolaimus Sher, 1963 (extant flag source)
Aphasmatylenchus Sher, 1965 (basis of record)
Aphasmatylenchus Sher, 1965 (extant flag source)
Aphelenchulus Cobb, 1920 (basis of record)
Aphelenchulus Cobb, 1920 (extant flag source)
Apratylenchoides Sher, 1973 (basis of record)
Apratylenchoides Sher, 1973 (extant flag source)
Arboritynchus Reay, 1991 (extant flag source)
Arboritynchus Reay, 1991 (basis of record)
Atalodera Wouts & Sher, 1971 (basis of record)
Atalodera Wouts & Sher, 1971 (extant flag source)
Atetylenchus Khan, 1973 (extant flag source)
Atetylenchus Khan, 1973 (basis of record)
Atylenchus Cobb, 1913 (basis of record)
Atylenchus Cobb, 1913 (extant flag source)
Aulosphora Siddiqi, 1980 (basis of record)
Aulosphora Siddiqi, 1980 (extant flag source)
Bakernema Wu, 1964 (extant flag source)
Bakernema Wu, 1964 (basis of record)
Basiria Siddiqi, 1959 (basis of record)
Basiria Siddiqi, 1959 (extant flag source)
Bealius Massey & Hinds, 1970 accepted as Stictylus Thorne, 1941 (extant flag source)
Bealius Massey & Hinds, 1970 accepted as Stictylus Thorne, 1941 (basis of record)
Bellodera Wouts, 1985 (extant flag source)
Bellodera Wouts, 1985 (basis of record)
Belonolaimus Steiner, 1949 (basis of record)
Belonolaimus Steiner, 1949 (extant flag source)
Bilobodera Sharma & Siddiqi, 1992 (basis of record)
Bilobodera Sharma & Siddiqi, 1992 (extant flag source)
Bitylenchus Filipjev, 1934 (extant flag source)
Bitylenchus Filipjev, 1934 (basis of record)
Blandicephalanema Mehta & Raski, 1971 (basis of record)
Blandicephalanema Mehta & Raski, 1971 (extant flag source)
Boleodorus Thorne, 1941 (basis of record)
Boleodorus Thorne, 1941 (extant flag source)
Boomerangia Siddiqi, 1994 (basis of record)
Boomerangia Siddiqi, 1994 (extant flag source)
Bovienema Nickle, 1963 (extant flag source)
Bovienema Nickle, 1963 (basis of record)
Brachydorus de Guiran & Germani, 1968 (extant flag source)
Brachydorus de Guiran & Germani, 1968 (basis of record)
Bradynema Strassen, 1892 (basis of record)
Bradynema Strassen, 1892 (extant flag source)
Bursadera Ivanova & Krall, 1985 (extant flag source)
Bursadera Ivanova & Krall, 1985 (basis of record)
Cacopaurus Thorne, 1943 (basis of record)
Cacopaurus Thorne, 1943 (extant flag source)
Cactodera Krall & Krall, 1978 (basis of record)
Cactodera Krall & Krall, 1978 (extant flag source)
Caloosia Siddiqi & Goodey, 1963 (basis of record)
Caloosia Siddiqi & Goodey, 1963 (extant flag source)
Camelodera Krall, Shagalina & Ivanova, 1988 (basis of record)
Camelodera Krall, Shagalina & Ivanova, 1988 (extant flag source)
Campbellenchus Wouts, 1978 (extant flag source)
Campbellenchus Wouts, 1978 (basis of record)
Carphodorus Colbran, 1965 (basis of record)
Carphodorus Colbran, 1965 (extant flag source)
Cephalenchus Goodey, 1962 (basis of record)
Cephalenchus Goodey, 1962 (extant flag source)
Cervoannulatus Bajaj, 1998 (extant flag source)
Cervoannulatus Bajaj, 1998 (basis of record)
Chilenchus Siddiqi, 2000 (basis of record)
Chilenchus Siddiqi, 2000 (extant flag source)
Chitinotylenchus Micoletzky, 1922 (basis of record)
Chitinotylenchus Micoletzky, 1922 (extant flag source)
Colbranium Andrassy, 1979 (basis of record)
Colbranium Andrassy, 1979 (extant flag source)
Contortylenchus Rühm, 1956 (extant flag source)
Contortylenchus Rühm, 1956 (basis of record)
Coslenchus Siddiqi, 1978 (extant flag source)
Coslenchus Siddiqi, 1978 (basis of record)
Criconema Hofmänner & Menzel, 1914 (extant flag source)
Criconema Hofmänner & Menzel, 1914 (basis of record)
Criconemoides Taylor, 1936 (extant flag source)
Criconemoides Taylor, 1936 (basis of record)