Acanthicolepis asperrima (M. Sars, 1861) (redescription)
Aglaophamus malmgreni (Théel, 1879) (redescription)
Alentia gelatinosa (M. Sars, 1835) (redescription)
Alitta virens (M. Sars, 1835) (redescription)
Alkmaria romijni Horst, 1919 (source of synonymy)
Amaeana trilobata (Sars, 1863) (redescription)
Amage auricula Malmgren, 1866 (redescription)
Ampharete acutifrons (Grube, 1860) (redescription)
Ampharete borealis (M. Sars, 1856) (basis of record)
Ampharete crassiseta Annenkova, 1929 (redescription)
Ampharete falcata Eliason, 1955 (redescription)
Ampharete finmarchica (M. Sars, 1865) (redescription)
Ampharete lindstroemi Hessle, 1917 (redescription)
Ampharete octocirrata (Sars, 1835) (basis of record)
Ampharete petersenae Jirkov, 1997 (redescription)
Ampharete sibirica (Wirén, 1883) (basis of record)
Ampharete vega (Wirén, 1883) (redescription)
Amphicteis gunneri (M. Sars, 1835) (redescription)
Amphicteis ninonae Jirkov, 1985 (redescription)
Amphicteis sundevalli Malmgren, 1866 (redescription)
Amphitrite affinis Malmgren, 1866 represented as Neoamphitrite affinis (Malmgren, 1866) (redescription)
Amphitrite cirrata Müller, 1776 (redescription)
Amphitrite figulus (Dalyell, 1853) represented as Neoamphitrite figulus (Dalyell, 1853) (redescription)
Amphitrite grayi Malmgren, 1866 represented as Neoamphitrite grayi (Malmgren, 1866) (redescription)
Amphitrite groenlandica Malmgren, 1866 represented as Neoamphitrite groenlandica (Malmgren, 1866) (redescription)
Amphitritides gracilis (Grube, 1860) (redescription)
Amythasides macroglossus Eliason, 1955 (redescription)
Anobothrus gracilis (Malmgren, 1866) (redescription)
Anobothrus laubieri (Desbruyères, 1978) (basis of record)
Antinoella finmarchica (Malmgren, 1867) accepted as Antinoe finmarchica Malmgren, 1867 (status source)
Aonides oxycephala (Sars, 1862) (redescription)
Aonides paucibranchiata Southern, 1914 (redescription)
Aphrodita aculeata Linnaeus, 1758 (identification resource)
Apistobranchus tullbergi (Théel, 1879) (redescription)
Arcteobia anticostiensis (Mcintosh, 1874) (redescription)
Arcteobia spinelytris Uschakov in Annenkova, 1937 (redescription)
Arctonoe vittata (Grube, 1855) (redescription)
Arenicola marina (Linnaeus, 1758) (redescription)
Aricidea abranchiata Hartman, 1965 (redescription)
Aricidea albatrossae Pettibone, 1957 represented as Aricidea (Aricidea) albatrossae Pettibone, 1957 (redescription)
Aricidea catherinae Laubier, 1967 represented as Aricidea (Acmira) catherinae Laubier, 1967 (redescription)
Aricidea hartmanae (Strelzov, 1968) (redescription)
Aricidea nolani Webster & Benedict, 1887 (redescription)
Aricidea quadrilobata Webster & Benedict, 1887 represented as Aricidea (Strelzovia) quadrilobata Webster & Benedict, 1887 (redescription)
Artacama proboscidea Malmgren, 1866 (redescription)
Asychis biceps (M. Sars, 1861) accepted as Chirimia biceps biceps (Sars, 1861) (redescription)
Austrolaenilla mollis (Sars, 1872) (redescription)
Axiothella catenata (Malmgren, 1865) (redescription)
Baffinia hesslei (Annenkova-Chlopina, 1924) (additional source)
Bathycanadia diaphana Levenstein, 1981 (redescription)
Bathymiranda microcephala Levenstein, 1981 (redescription)
Bathypolaria carinata Levenstein, 1981 (redescription)
Bispira crassicornis (Sars, 1851) (redescription)
Bispira fabricii (Krøyer, 1856) (redescription)
Bispira volutacornis (Montagu, 1804) (redescription)
Brada granulosa Hansen, 1880 (redescription)
Brada incrustata Støp-Bowitz, 1948 (redescription)
Brada inhabilis (Rathke, 1843) (redescription)
Brada nuda Annenkova-Chlopina, 1922 accepted as Bradabyssa nuda (Annenkova-Chlopina, 1922) (redescription)
Brada ochotensis Annenkova-Chlopina, 1922 (redescription)
Brada rugosa (Hansen, 1880) accepted as Bradabyssa rugosa (Hansen, 1880) (redescription)
Brada sachalina Annenkova-Chlopina, 1922 accepted as Bradabyssa sachalina (Annenkova-Chlopina, 1922) (redescription)
Brada strelzovi Jirkov & Filippova in Jirkov, 2001 accepted as Bradabyssa strelzovi (Jirkov & Filippova in Jirkov, 2001) (original description)
Brada tzetlini Jirkov & Filippova in Jirkov, 2001 (original description)
Brada villosa (Rathke, 1843) accepted as Bradabyssa villosa (Rathke, 1843) (redescription)
Branchiomaldane labradorensis Fournier & Barrie, 1987 (redescription)
Bushiella (Bushiella) verruca (Fabricius in Mörch, 1863) (redescription)
Bushiella (Jugaria) granulata (Linnaeus, 1767) accepted as Janua heterostropha (Montagu, 1803) (redescription)
Bushiella (Jugaria) kofiadii Rzhavsky, 1988 (redescription)
Bushiella (Jugaria) quadrangularis (Stimpson, 1853) (redescription)
Bushiella (Jugaria) similis (Bush, 1905) (redescription)
Bylgides annenkovae Pettibone, 1993 (redescription)
Bylgides elegans (Théel, 1879) (redescription)
Bylgides groenlandicus (Malmgren, 1867) (redescription)
Bylgides promamme (Malmgren, 1867) (redescription)
Ceratocephale loveni Malmgren, 1867 (redescription)
Chaetoparia nilssoni Malmgren, 1867 (redescription)
Chauvinelia arctica Averincev, 1980 (additional source)
Chitinopoma serrula (Stimpson, 1853) (redescription)
Circeis spirillum (Linnaeus, 1758) (redescription)
Cirrophorus branchiatus Ehlers, 1908 (redescription)
Cirrophorus lyra (Southern, 1914) represented as Paradoneis lyra (Southern, 1914) (redescription)
Clymenura borealis (Arwidsson, 1906) (redescription)
Clymenura polaris (Théel, 1879) (redescription)
Diplocirrus glaucus (Malmgren, 1867) (redescription)
Diplocirrus hirsutus (Hansen, 1878) accepted as Saphobranchia hirsuta (Hansen, 1878) (redescription)
Diplocirrus longisetosus (Marenzeller, 1890) accepted as Saphobranchia longisetosa (Marenzeller, 1890) (redescription)
Ditrupa arietina (O. F. Müller, 1776) (redescription)
Drilonereis filum (Claparède, 1868) (redescription)
Dysponetus pygmaeus Levinsen, 1879 (redescription)
Eclysippe Eliason, 1955 (source of synonymy)
Enipo chuckchi Uschakov, 1982 (redescription)
Enipo gracilis Verrill, 1874 (redescription)
Enipo tamarae (Annenkova, 1952) (redescription)
Enipo tarasovi (Annenkova, 1937) (redescription)
Enipo torelli (Malmgren, 1865) (redescription)
Eteone barbata (Malmgren, 1865) accepted as Mysta barbata Malmgren, 1865 (redescription)
Eteone flava (Fabricius, 1780) (redescription)
Eteone foliosa Quatrefages, 1866 accepted as Hypereteone foliosa (Quatrefages, 1865) (redescription)
Eteone suecica Bergström, 1914 (redescription)