Abarenicola Wells, 1959 (basis of record)
Acrocirrus Grube, 1873 (basis of record)
Alciopina Claparède & Panceri, 1867 (additional source)
Alciopina parasitica Claparède & Panceri, 1867 (additional source)
Amaeana Hartman, 1959 (additional source)
Amaeana trilobata (Sars, 1863) (additional source)
Amblyosyllis Grube, 1857 (basis of record)
Ampharete Malmgren, 1866 (additional source)
Ampharete acutifrons (Grube, 1860) (additional source)
Ampharete finmarchica (M. Sars, 1865) (basis of record)
Amphicteis Grube, 1850 (additional source)
Amphicteis gunneri (M. Sars, 1835) (additional source)
Amphinome Bruguière, 1789 (additional source)
Amphinome rostrata (Pallas, 1766) (additional source)
Amphitrite Müller, 1771 (additional source)
Amphitrite cirrata Müller, 1776 (basis of record)
Ancistrosyllis McIntosh, 1878 (additional source)
Ancistrosyllis groenlandica McIntosh, 1878 (basis of record)
Aonides Claparède, 1864 (additional source)
Aonides oxycephala (Sars, 1862) (basis of record)
Aphelochaeta Blake, 1991 (additional source)
Aphelochaeta filiformis (Keferstein, 1862) (basis of record)
Aphelochaeta marioni (Saint-Joseph, 1894) (basis of record)
Apomatus Philippi, 1844 (basis of record)
Apoprionospio Foster, 1969 (additional source)
Apoprionospio pygmaea (Hartman, 1961) (basis of record)
Arabella iricolor (Montagu, 1804) (basis of record)
Arenicola Lamarck, 1801 (additional source)
Aricidea Webster, 1879 (additional source)
Aricidea claudiae Laubier, 1967 represented as Aricidea (Strelzovia) claudiae Laubier, 1967 (basis of record)
Aricidea quadrilobata Webster & Benedict, 1887 represented as Aricidea (Strelzovia) quadrilobata Webster & Benedict, 1887 (basis of record)
Armandia Filippi, 1861 (additional source)
Artacama Malmgren, 1866 (basis of record)
Artacama proboscidea Malmgren, 1866 (basis of record)
Auchenoplax Ehlers, 1887 (additional source)
Auchenoplax crinita Ehlers, 1887 (basis of record)
Autolytus Grube, 1850 accepted as Myrianida Milne Edwards, 1845 (additional source)
Autolytus pictus (Ehlers, 1864) accepted as Proceraea picta Ehlers, 1864 (basis of record)
Axiothella Verrill, 1900 (basis of record)
Bhawania Schmarda, 1861 (additional source)
Bhawania goodei Webster, 1884 (basis of record)
Boccardia Carazzi, 1893 (basis of record)
Boccardia polybranchia (Haswell, 1885) (basis of record)
Boccardiella Blake & Kudenov, 1978 (basis of record)
Brada Stimpson, 1853 (additional source)
Brada villosa (Rathke, 1843) accepted as Bradabyssa villosa (Rathke, 1843) (basis of record)
Branchiomma Kölliker, 1858 (additional source)
Branchiosyllis Ehlers, 1887 (basis of record)
Branchiosyllis exilis (Gravier, 1900) (additional source)
Brania Quatrefages, 1866 (additional source)
Capitella Blainville, 1828 (additional source)
Capitella capitata (Fabricius, 1780) (basis of record)
Caulleriella Chamberlin, 1919 (additional source)
Ceratonereis Kinberg, 1865 (basis of record)
Ceratonereis mirabilis Kinberg, 1865 (additional source)
Chaetopterus Cuvier, 1830 (additional source)
Chaetopterus variopedatus (Renier, 1804) (basis of record)
Chaetozone Malmgren, 1867 (additional source)
Chaetozone setosa Malmgren, 1867 (additional source)
Chloeia Lamarck, 1818 (additional source)
Chone filicaudata Southern, 1914 (basis of record)
Chone infundibuliformis Krøyer, 1856 (basis of record)
Chrysopetalum Ehlers, 1864 (basis of record)
Chrysopetalum debile (Grube, 1855) (basis of record)
Circeis Saint-Joseph, 1894 (additional source)
Circeis spirillum (Linnaeus, 1758) (basis of record)
Cirratulus Lamarck, 1818 (additional source)
Cirratulus chrysoderma Claparède, 1868 accepted as Protocirrineris chrysoderma (Claparède, 1868) (additional source)
Cirratulus cirratus (O. F. Müller, 1776) (additional source)
Cirriformia Hartman, 1936 (additional source)
Cirriformia semicincta (Ehlers, 1905) (basis of record)
Cirriformia tentaculata (Montagu, 1808) (basis of record)
Cirrophorus Ehlers, 1908 (basis of record)
Cirrophorus branchiatus Ehlers, 1908 (basis of record)
Cirrophorus furcatus (Hartman, 1957) (basis of record)
Clymenella Verrill, 1873 (basis of record)
Clymenella cincta (Saint-Joseph, 1894) (basis of record)
Clymenura Verrill, 1900 (basis of record)
Cossura Webster & Benedict, 1887 (additional source)
Cossura longocirrata Webster & Benedict, 1887 (basis of record)
Ctenodrilus Claparède, 1863 (basis of record)
Ctenodrilus serratus (Schmidt, 1857) (basis of record)
Dasybranchus Grube, 1850 (basis of record)
Dasybranchus caducus (Grube, 1846) (basis of record)
Demonax Kinberg, 1867 accepted as Parasabella Bush, 1905 (additional source)
Dinophilus Schmidt, 1848 (additional source)
Dinophilus gyrociliatus O. Schmidt, 1857 accepted as Dimorphilus gyrociliatus (O. Schmidt, 1857) (additional source)
Diopatra Audouin & Milne Edwards, 1833 (additional source)
Diplocirrus Haase, 1915 (additional source)
Dipolydora Verrill, 1881 (additional source)
Dipolydora armata (Langerhans, 1880) (basis of record)
Dipolydora flava (Claparède, 1870) (additional source)
Dipolydora giardi (Mesnil, 1893) (additional source)
Dipolydora socialis (Schmarda, 1861) (additional source)
Ditrupa Berkeley, 1835 (additional source)
Ditrupa arietina (O. F. Müller, 1776) (basis of record)
Dodecaceria Örsted, 1843 (additional source)
Dodecaceria concharum Örsted, 1843 (additional source)
Dorvillea Parfitt, 1866 (additional source)
Drilonereis Claparède, 1870 (additional source)