Abarenicola Wells, 1959 (extant flag source)
Abarenicola Wells, 1959 (basis of record)
Amastigos Piltz, 1977 (basis of record)
Amastigos Piltz, 1977 (extant flag source)
Ammotrypanella McIntosh, 1878 (extant flag source)
Ammotrypanella McIntosh, 1878 (basis of record)
Antiobactrum Chamberlin, 1919 (basis of record)
Antiobactrum Chamberlin, 1919 (extant flag source)
Archarenicola (basis of record)
Arenicola Lamarck, 1801 (basis of record)
Arenicolides Mesnil, 1898 (basis of record)
Arenicolides Mesnil, 1898 (extant flag source)
Aricidea Webster, 1879 (extant flag source)
Aricidea Webster, 1879 (basis of record)
Armandia Filippi, 1861 (basis of record)
Armandia Filippi, 1861 (extant flag source)
Asclerocheilus Ashworth, 1901 (basis of record)
Asclerocheilus Ashworth, 1901 (extant flag source)
Asychis Kinberg, 1867 (extant flag source)
Asychis Kinberg, 1867 (basis of record)
Axiokebutia (extant flag source)
Axiokebutia (basis of record)
Axiothella Verrill, 1900 (extant flag source)
Axiothella Verrill, 1900 (basis of record)
Baldia Garwood & Bamber, 1988 (basis of record)
Baldia Garwood & Bamber, 1988 (extant flag source)
Boguea Hartman, 1945 (basis of record)
Boguea Hartman, 1945 (extant flag source)
Branchiomaldane Langerhans, 1881 (extant flag source)
Branchiomaldane Langerhans, 1881 (basis of record)
Capitella Blainville, 1828 (basis of record)
Capitella Blainville, 1828 (extant flag source)
Capitellides Mesnil, 1897 accepted as Capitella Blainville, 1828 (basis of record)
Capitomastus Eisig, 1887 accepted as Capitella Blainville, 1828 (basis of record)
Chirimia Light, 1991 (basis of record)
Chirimia Light, 1991 (extant flag source)
Cirrophorus Ehlers, 1908 (extant flag source)
Cirrophorus Ehlers, 1908 (basis of record)
Clymenella Verrill, 1873 (extant flag source)
Clymenella Verrill, 1873 (basis of record)
Clymenopsis Verrill, 1900 (extant flag source)
Clymenopsis Verrill, 1900 (basis of record)
Cossura Webster & Benedict, 1887 (basis of record)
Cossura Webster & Benedict, 1887 (extant flag source)
Cossurella Hartman, 1976 accepted as Cossura Webster & Benedict, 1887 (extant flag source)
Cossurella Hartman, 1976 accepted as Cossura Webster & Benedict, 1887 (basis of record)
Cryptosclerocheilus Blake, 1972 accepted as Polyphysia Quatrefages, 1866 (basis of record)
Cryptosclerocheilus Blake, 1972 accepted as Polyphysia Quatrefages, 1866 (extant flag source)
Dasybranchus Grube, 1850 (extant flag source)
Dasybranchus Grube, 1850 (basis of record)
Euclymene Verrill, 1900 (basis of record)
Euclymene Verrill, 1900 (extant flag source)
Euzonus Grube, 1866 accepted as Thoracophelia Ehlers, 1897 (extant flag source)
Euzonus Grube, 1866 accepted as Thoracophelia Ehlers, 1897 (basis of record)
Gravierella Fauvel, 1919 (basis of record)
Gravierella Fauvel, 1919 (extant flag source)
Haploscoloplos Monro, 1933 accepted as Scoloplos Blainville, 1828 (basis of record)
Haploscoloplos Monro, 1933 accepted as Scoloplos Blainville, 1828 (extant flag source)
Helminthoidea Maillard, 1887 † (extant flag source)
Helminthoidea Maillard, 1887 † (basis of record)
Hrabeiella Pizl & Chalupský, 1984 (basis of record)
Hrabeiella Pizl & Chalupský, 1984 (extant flag source)
Hyboscolex Schmarda, 1861 (basis of record)
Hyboscolex Schmarda, 1861 (extant flag source)
Kebuita Chamberlin, 1919 accepted as Asclerocheilus Ashworth, 1901 (basis of record)
Kebuita Chamberlin, 1919 accepted as Asclerocheilus Ashworth, 1901 (extant flag source)
Leitoscoloplos Day, 1977 (basis of record)
Leitoscoloplos Day, 1977 (extant flag source)
Levinsenia Mesnil, 1897 (extant flag source)
Levinsenia Mesnil, 1897 (basis of record)
Lobochesis Hutchings & Murray, 1984 accepted as Thoracophelia Ehlers, 1897 (basis of record)
Lobochesis Hutchings & Murray, 1984 accepted as Thoracophelia Ehlers, 1897 (extant flag source)
Macroclymene Verrill, 1900 (extant flag source)
Macroclymene Verrill, 1900 (basis of record)
Maldanella McIntosh, 1885 (basis of record)
Maldanella McIntosh, 1885 (extant flag source)
Mastobranchus Eisig, 1887 (extant flag source)
Mastobranchus Eisig, 1887 (basis of record)
Mediomastus Hartman, 1944 (basis of record)
Mediomastus Hartman, 1944 (extant flag source)
Metasychis Light, 1991 (extant flag source)
Metasychis Light, 1991 (basis of record)
Methanoaricia Blake, 2000 (extant flag source)
Methanoaricia Blake, 2000 (basis of record)
Micromaldane Monro, 1939 (extant flag source)
Micromaldane Monro, 1939 (basis of record)
Microrbinia Hartman, 1965 (basis of record)
Microrbinia Hartman, 1965 (extant flag source)
Mucibregma Fauchald & Hancock, 1981 (basis of record)
Mucibregma Fauchald & Hancock, 1981 (extant flag source)
Neolipobranchius Hartman & Fauchald, 1971 (basis of record)
Neolipobranchius Hartman & Fauchald, 1971 (extant flag source)
Notomastus M. Sars, 1851 (extant flag source)
Notomastus M. Sars, 1851 (basis of record)
Oligobregma Kudenov & Blake, 1978 (basis of record)
Oligobregma Kudenov & Blake, 1978 (extant flag source)
Oncoscolex Schmarda, 1861 accepted as Hyboscolex Schmarda, 1861 (basis of record)
Oncoscolex Schmarda, 1861 accepted as Hyboscolex Schmarda, 1861 (extant flag source)
Ophelia Savigny, 1822 (extant flag source)
Ophelia Savigny, 1822 (basis of record)