Aglaophamus Kinberg, 1866 (additional source)
Amaeana Hartman, 1959 (additional source)
Amage Malmgren, 1866 (additional source)
Amage auricula Malmgren, 1866 (additional source)
Amblyosyllis Grube, 1857 (additional source)
Ampharete Malmgren, 1866 (additional source)
Ampharetidae Malmgren, 1866 (additional source)
Amphicteis Grube, 1850 (additional source)
Amphinomida (basis of record)
Amphinomidae Lamarck, 1818 (additional source)
Amphitrite Müller, 1771 (additional source)
Amphitritinae Malmgren, 1866 accepted as Terebellinae Johnston, 1846 (basis of record)
Anaitides Czerniavsky, 1882 accepted as Phyllodoce Lamarck, 1818 (basis of record)
Anobothrus Levinsen, 1884 (additional source)
Antinoella sarsi (Kinberg in Malmgren, 1866) accepted as Bylgides sarsi (Kinberg in Malmgren, 1866) (additional source)
Aonides Claparède, 1864 (additional source)
Aonides oxycephala (Sars, 1862) (additional source)
Aphrodita Linnaeus, 1758 (additional source)
Aphroditidae Malmgren, 1867 (additional source)
Aphroditiformia (additional source)
Apistobranchidae Mesnil & Caullery, 1898 (additional source)
Apistobranchus Levinsen, 1884 (additional source)
Apomatus Philippi, 1844 (additional source)
Arenicola Lamarck, 1801 (additional source)
Arenicolidae Johnston, 1835 (additional source)
Aricidea Webster, 1879 (additional source)
Artacama Malmgren, 1866 (additional source)
Artacama proboscidea Malmgren, 1866 (additional source)
Augeneria Monro, 1930 (additional source)
Autolytinae Langerhans, 1879 (additional source)
Autolytus Grube, 1850 accepted as Myrianida Milne Edwards, 1845 (additional source)
Axionice Malmgren, 1866 (additional source)
Axionice flexuosa (Grube, 1860) (additional source)
Axiothella Verrill, 1900 (additional source)
Axiothella catenata (Malmgren, 1865) (additional source)
Bispira Krøyer, 1856 (additional source)
Boccardia Carazzi, 1893 (additional source)
Boccardia polybranchia (Haswell, 1885) (additional source)
Brada Stimpson, 1853 (additional source)
Capitella Blainville, 1828 (additional source)
Capitellida (basis of record)
Capitellidae Grube, 1862 (taxonomy source)
Capitomastus Eisig, 1887 accepted as Capitella Blainville, 1828 (status source)
Capitomastus minimus (Langerhans, 1880) accepted as Capitella minima Langerhans, 1880 (basis of record)
Ceratocephale Malmgren, 1867 (additional source)
Ceratocephale loveni Malmgren, 1867 (additional source)
Chaetopteridae Audouin & Milne Edwards, 1833 (additional source)
Chaetopteriformia (basis of record)
Chaetozone Malmgren, 1867 (additional source)
Chaetozone setosa Malmgren, 1867 (additional source)
Chitinopoma Levinsen, 1884 (additional source)
Chone Krøyer, 1856 (additional source)
Chone infundibuliformis Krøyer, 1856 (additional source)
Chrysopetalacea (basis of record)
Chrysopetalidae Ehlers, 1864 (additional source)
Circeis Saint-Joseph, 1894 (additional source)
Cirratulidae Ryckholt, 1851 (additional source)
Cirratuliformia (basis of record)
Cirratulus Lamarck, 1818 (additional source)
Cirrophorus Ehlers, 1908 (additional source)
Cirrophorus branchiatus Ehlers, 1908 (additional source)
Clymenura Verrill, 1900 (additional source)
Cossura Webster & Benedict, 1887 (additional source)
Cossurida (basis of record)
Cossuridae Day, 1963 (additional source)
Dinophilidae Macalister, 1876 (additional source)
Dinophilus vorticoides Schmidt, 1848 (additional source)
Diplocirrus Haase, 1915 (additional source)
Dipolydora Verrill, 1881 (additional source)
Dodecaceria Örsted, 1843 (additional source)
Dodecaceria concharum Örsted, 1843 (additional source)
Dorvillea Parfitt, 1866 (additional source)
Dorvillea rubrovittata (Grube, 1855) (additional source)
Dorvilleidae Chamberlin, 1919 (additional source)
Dysponetus Levinsen, 1879 (additional source)
Dysponetus pygmaeus Levinsen, 1879 (additional source)
Eclysippe Eliason, 1955 (additional source)
Ehlersia Quatrefages, 1866 accepted as Syllis Lamarck, 1818 (additional source)
Enipo Malmgren, 1865 (additional source)
Ephesiella Chamberlin, 1919 (additional source)
Ephesiella abyssorum (Hansen, 1878) (additional source)
Euchone Malmgren, 1866 (additional source)
Euclymene Verrill, 1900 (additional source)
Euclymeninae Arwidsson, 1906 (additional source)
Eucranta Malmgren, 1865 (additional source)
Eulalia viridis (Linnaeus, 1767) (additional source)
Eunice Cuvier, 1817 (additional source)
Eunicea (additional source)
Eunicida (basis of record)
Eunicidae Berthold, 1827 (additional source)
Eunoe Malmgren, 1865 (additional source)
Eupolymnia Verrill, 1900 (additional source)
Eusyllinae Malaquin, 1893 (additional source)
Eusyllis Malmgren, 1867 (additional source)
Eusyllis blomstrandi Malmgren, 1867 (additional source)
Euzonus Grube, 1866 accepted as Thoracophelia Ehlers, 1897 (additional source)
Exogone Örsted, 1845 (additional source)
Exogone (Exogone) naidina Örsted, 1845 accepted as Exogone naidina Örsted, 1845 (additional source)
Exogoninae Langerhans, 1879 (basis of record)
Fabricia Blainville, 1828 (additional source)