Acrocirrus Grube, 1873 (basis of record)
Aglaophamus malmgreni (Théel, 1879) (basis of record)
Amaeana Hartman, 1959 (additional source)
Amaeana trilobata (Sars, 1863) (additional source)
Amage Malmgren, 1866 (additional source)
Amage auricula Malmgren, 1866 (basis of record)
Amblyosyllis Grube, 1857 (basis of record)
Amblyosyllis finmarchica (Malmgren, 1867) (basis of record)
Ampharete Malmgren, 1866 (additional source)
Ampharete acutifrons (Grube, 1860) (additional source)
Ampharete baltica Eliason, 1955 (additional source)
Ampharete finmarchica (M. Sars, 1865) (basis of record)
Ampharete goesi Malmgren, 1866 (basis of record)
Ampharete lindstroemi Hessle, 1917 (basis of record)
Ampharete vega (Wirén, 1883) (basis of record)
Amphicteis Grube, 1850 (additional source)
Amphicteis gunneri (M. Sars, 1835) (additional source)
Amphicteis sundevalli Malmgren, 1866 (basis of record)
Amphitrite Müller, 1771 (additional source)
Amphitrite cirrata Müller, 1776 (basis of record)
Ancistrosyllis McIntosh, 1878 (additional source)
Ancistrosyllis groenlandica McIntosh, 1878 (basis of record)
Anobothrus Levinsen, 1884 (additional source)
Anobothrus gracilis (Malmgren, 1866) (additional source)
Aonides Claparède, 1864 (additional source)
Aphelochaeta Blake, 1991 (additional source)
Aphelochaeta filiformis (Keferstein, 1862) (basis of record)
Aphelochaeta marioni (Saint-Joseph, 1894) (basis of record)
Apistobranchus Levinsen, 1884 (additional source)
Apistobranchus tullbergi (Théel, 1879) (additional source)
Apoprionospio Foster, 1969 (additional source)
Arabella iricolor (Montagu, 1804) (basis of record)
Arenicola Lamarck, 1801 (additional source)
Arenicola cristata Stimpson, 1856 (basis of record)
Arenicola marina (Linnaeus, 1758) (basis of record)
Aricidea Webster, 1879 (additional source)
Aricidea quadrilobata Webster & Benedict, 1887 represented as Aricidea (Strelzovia) quadrilobata Webster & Benedict, 1887 (basis of record)
Aricidea suecica Eliason, 1920 represented as Aricidea (Strelzovia) suecica Eliason, 1920 (additional source)
Armandia Filippi, 1861 (additional source)
Artacama Malmgren, 1866 (basis of record)
Artacama proboscidea Malmgren, 1866 (basis of record)
Asabellides siberica [auct.] accepted as Asabellides sibirica (Wirén, 1883) accepted as Ampharete sibirica (Wirén, 1883) (basis of record)
Asclerocheilus Ashworth, 1901 (basis of record)
Asclerocheilus intermedius (Saint-Joseph, 1894) (basis of record)
Auchenoplax Ehlers, 1887 (additional source)
Auchenoplax crinita Ehlers, 1887 (basis of record)
Austrolaenilla mollis (Sars, 1872) (basis of record)
Autolytus Grube, 1850 accepted as Myrianida Milne Edwards, 1845 (additional source)
Autolytus alexandri Malmgren, 1867 accepted as Epigamia alexandri (Malmgren, 1867) (basis of record)
Autolytus prismaticus (O.F. Müller, 1776) accepted as Proceraea prismatica (O.F. Müller, 1776) (basis of record)
Autolytus verrilli Marenzeller, 1892 accepted as Epigamia alexandri (Malmgren, 1867) (basis of record)
Axionice Malmgren, 1866 (additional source)
Axionice flexuosa (Grube, 1860) (basis of record)
Axionice maculata (Dalyell, 1853) accepted as Pista maculata (Dalyell, 1853) (additional source)
Axiothella Verrill, 1900 (basis of record)
Axiothella catenata (Malmgren, 1865) (basis of record)
Bispira Krøyer, 1856 (additional source)
Bispira crassicornis (Sars, 1851) (basis of record)
Brada Stimpson, 1853 (additional source)
Brada inhabilis (Rathke, 1843) (basis of record)
Brada villosa (Rathke, 1843) accepted as Bradabyssa villosa (Rathke, 1843) (basis of record)
Branchiomma Kölliker, 1858 (additional source)
Branchiomma infarctum (Krøyer, 1856) (basis of record)
Brania Quatrefages, 1866 (additional source)
Bushiella Knight-Jones, 1973 (basis of record)
Bylgides elegans (Théel, 1879) (basis of record)
Bylgides groenlandicus (Malmgren, 1867) (basis of record)
Bylgides promamme (Malmgren, 1867) (basis of record)
Capitella Blainville, 1828 (additional source)
Capitella capitata (Fabricius, 1780) (basis of record)
Capitella giardi (Mesnil, 1897) (additional source)
Caulleriella Chamberlin, 1919 (additional source)
Ceratocephale Malmgren, 1867 (additional source)
Ceratocephale loveni Malmgren, 1867 (basis of record)
Ceratonereis Kinberg, 1865 (basis of record)
Chaetopterus Cuvier, 1830 (additional source)
Chaetopterus variopedatus (Renier, 1804) (basis of record)
Chaetozone Malmgren, 1867 (additional source)
Chaetozone setosa Malmgren, 1867 (additional source)
Chitinopoma Levinsen, 1884 (basis of record)
Chitinopoma serrula (Stimpson, 1853) (basis of record)
Chloeia Lamarck, 1818 (additional source)
Chloeia viridis Schmarda, 1861 (additional source)
Chone duneri Malmgren, 1867 (basis of record)
Chone infundibuliformis Krøyer, 1856 (basis of record)
Circeis Saint-Joseph, 1894 (additional source)
Circeis armoricana Saint-Joseph, 1894 (additional source)
Circeis spirillum (Linnaeus, 1758) (basis of record)
Cirratulus Lamarck, 1818 (additional source)
Cirratulus cirratus (O. F. Müller, 1776) (additional source)
Cirriformia Hartman, 1936 (additional source)
Cirrophorus Ehlers, 1908 (basis of record)
Cirrophorus branchiatus Ehlers, 1908 (basis of record)
Cirrophorus furcatus (Hartman, 1957) (basis of record)
Clavodorum Hartman & Fauchald, 1971 (additional source)
Clymenella Verrill, 1873 (basis of record)
Clymenella torquata (Leidy, 1855) (basis of record)
Clymenura Verrill, 1900 (basis of record)
Clymenura borealis (Arwidsson, 1906) (basis of record)
Clymenura polaris (Théel, 1879) (basis of record)

European waters (ERMS scope) for Aglaophamus malmgreni (Théel, 1879) 
European waters (ERMS scope) for Amaeana trilobata (Sars, 1863) 
European waters (ERMS scope) for Amage auricula Malmgren, 1866 
European waters (ERMS scope) for Amblyosyllis finmarchica (Malmgren, 1867) 
European waters (ERMS scope) for Ampharete acutifrons (Grube, 1860) 
European waters (ERMS scope) for Ampharete baltica Eliason, 1955 
European waters (ERMS scope) for Ampharete finmarchica (M. Sars, 1865) 
European waters (ERMS scope) for Ampharete goesi Malmgren, 1866 
European waters (ERMS scope) for Ampharete lindstroemi Hessle, 1917 
European waters (ERMS scope) for Ampharete vega (Wirén, 1883) 
European waters (ERMS scope) for Amphicteis gunneri (M. Sars, 1835) 
European waters (ERMS scope) for Amphicteis sundevalli Malmgren, 1866 
European waters (ERMS scope) for Amphitrite cirrata Müller, 1776 
European waters (ERMS scope) for Ancistrosyllis groenlandica McIntosh, 1878 
European waters (ERMS scope) for Anobothrus gracilis (Malmgren, 1866) 
European waters (ERMS scope) for Aphelochaeta Blake, 1991 
European waters (ERMS scope) for Aphelochaeta filiformis (Keferstein, 1862) 
European waters (ERMS scope) for Aphelochaeta marioni (Saint-Joseph, 1894) 
European waters (ERMS scope) for Aphrodita aculeata Linnaeus, 1758  (doubtful)
European waters (ERMS scope) for Apistobranchus tullbergi (Théel, 1879) 
European waters (ERMS scope) for Arabella iricolor (Montagu, 1804) 
European waters (ERMS scope) for Arenicola cristata Stimpson, 1856 
European waters (ERMS scope) for Arenicola marina (Linnaeus, 1758) 
European waters (ERMS scope) for Aricidea quadrilobata Webster & Benedict, 1887 
European waters (ERMS scope) for Artacama proboscidea Malmgren, 1866 
European waters (ERMS scope) for Asabellides siberica [auct.] 
European waters (ERMS scope) for Asclerocheilus intermedius (Saint-Joseph, 1894) 
European waters (ERMS scope) for Auchenoplax crinita Ehlers, 1887 
European waters (ERMS scope) for Austrolaenilla mollis (Sars, 1872) 
European waters (ERMS scope) for Autolytus alexandri Malmgren, 1867 
European waters (ERMS scope) for Autolytus prismaticus (O.F. Müller, 1776) 
European waters (ERMS scope) for Autolytus verrilli Marenzeller, 1892 
European waters (ERMS scope) for Axionice flexuosa (Grube, 1860) 
European waters (ERMS scope) for Axionice maculata (Dalyell, 1853) 
European waters (ERMS scope) for Axiothella catenata (Malmgren, 1865) 
European waters (ERMS scope) for Bispira crassicornis (Sars, 1851) 
European waters (ERMS scope) for Brada inhabilis (Rathke, 1843) 
European waters (ERMS scope) for Brada villosa (Rathke, 1843) 
European waters (ERMS scope) for Branchiomma infarctum (Krøyer, 1856) 
European waters (ERMS scope) for Bylgides elegans (Théel, 1879) 
European waters (ERMS scope) for Bylgides groenlandicus (Malmgren, 1867) 
European waters (ERMS scope) for Bylgides promamme (Malmgren, 1867) 
European waters (ERMS scope) for Bylgides sarsi (Kinberg in Malmgren, 1866) 
European waters (ERMS scope) for Capitella capitata (Fabricius, 1780) 
European waters (ERMS scope) for Capitella giardi (Mesnil, 1897) 
European waters (ERMS scope) for Ceratocephale loveni Malmgren, 1867 
European waters (ERMS scope) for Chaetopterus variopedatus (Renier, 1804) 
European waters (ERMS scope) for Chaetozone setosa Malmgren, 1867 
European waters (ERMS scope) for Chitinopoma serrula (Stimpson, 1853) 
European waters (ERMS scope) for Chloeia viridis Schmarda, 1861 
European waters (ERMS scope) for Chone duneri Malmgren, 1867 
European waters (ERMS scope) for Chone infundibuliformis Krøyer, 1856 
European waters (ERMS scope) for Circeis spirillum (Linnaeus, 1758) 
European waters (ERMS scope) for Cirratulus cirratus (O. F. Müller, 1776) 
European waters (ERMS scope) for Cirrophorus branchiatus Ehlers, 1908 
European waters (ERMS scope) for Cirrophorus furcatus (Hartman, 1957) 
European waters (ERMS scope) for Clymenella torquata (Leidy, 1855) 
European waters (ERMS scope) for Clymenura borealis (Arwidsson, 1906) 
European waters (ERMS scope) for Clymenura polaris (Théel, 1879) 
European waters (ERMS scope) for Cossura longocirrata Webster & Benedict, 1887 
European waters (ERMS scope) for Cossura soyeri Laubier, 1964 
European waters (ERMS scope) for Dasybranchus caducus (Grube, 1846) 
European waters (ERMS scope) for Dinophilus gyrociliatus O. Schmidt, 1857 
European waters (ERMS scope) for Diplocirrus glaucus (Malmgren, 1867) 
European waters (ERMS scope) for Diplocirrus hirsutus (Hansen, 1878) 
European waters (ERMS scope) for Diplocirrus longisetosus (Marenzeller, 1890) 
European waters (ERMS scope) for Dipolydora caulleryi (Mesnil, 1897) 
European waters (ERMS scope) for Dipolydora coeca (Örsted, 1843) 
European waters (ERMS scope) for Dipolydora quadrilobata (Jacobi, 1883) 
European waters (ERMS scope) for Dipolydora socialis (Schmarda, 1861) 
European waters (ERMS scope) for Dispio uncinata Hartman, 1951 
European waters (ERMS scope) for Ditrupa arietina (O. F. Müller, 1776) 
European waters (ERMS scope) for Dodecaceria concharum Örsted, 1843 
European waters (ERMS scope) for Dodecaceria fimbriata (Verrill, 1879) 
European waters (ERMS scope) for Dysponetus pygmaeus Levinsen, 1879 
European waters (ERMS scope) for Ehlersia ferrugina Langerhans, 1881 
European waters (ERMS scope) for Enipo torelli (Malmgren, 1865) 
European waters (ERMS scope) for Ephesiella abyssorum (Hansen, 1878) 
European waters (ERMS scope) for Ephesiella peripatus [Auctt. not Johnston, 1845] 
European waters (ERMS scope) for Eteone (Mysta) barbata (Malmgren, 1865) 
European waters (ERMS scope) for Eteone flava (Fabricius, 1780) 
European waters (ERMS scope) for Eteone foliosa Quatrefages, 1866 
European waters (ERMS scope) for Eteone longa (Fabricius, 1780) 
European waters (ERMS scope) for Eteone spetsbergensis Malmgren, 1865 
European waters (ERMS scope) for Euchone analis (Krøyer, 1856) 
European waters (ERMS scope) for Euchone elegans Verrill, 1873 
European waters (ERMS scope) for Euchone papillosa (Sars, 1851) 
European waters (ERMS scope) for Euchone rubrocincta (Sars, 1862) 
European waters (ERMS scope) for Euclymene collaris (Claparède, 1869) 
European waters (ERMS scope) for Euclymene oerstedii (Claparède, 1863) 
European waters (ERMS scope) for Eucranta villosa Malmgren, 1865 
European waters (ERMS scope) for Eulalia bilineata (Johnston, 1840) 
European waters (ERMS scope) for Eulalia viridis (Linnaeus, 1767) 
European waters (ERMS scope) for Eumida sanguinea (Örsted, 1843) 
European waters (ERMS scope) for Eunice norvegica (Linnaeus, 1767) 
European waters (ERMS scope) for Eunice pennata (Müller, 1776) 
European waters (ERMS scope) for Eunice vittata (Delle Chiaje, 1828) 
European waters (ERMS scope) for Eunoe nodosa (M. Sars, 1861) 
European waters (ERMS scope) for Eunoe oerstedi Malmgren, 1865 
European waters (ERMS scope) for Euphrosine borealis Örsted, 1843 

 Classification

 for Zeppelina monostyla (Zeppelin, 1883)

family position uncertain [details]

 Editor's comment

 for Polaruschakov polaris (Uschakov, 1957)

Data-entry error corrected. Original publication date of the recombined name was incorrectly originally ... [details]

 Publication date

 for Notocirrus arcachonis Quatrefages, 1873

Prior to 2017 the publication date was recorded here as 1843. This was incorrect. Although Quatrefages published in ... [details]

 Spelling

 for Autolytus syllisetosus Langerhans, 1884

Genus name mispelled as 'Autolitus' in printed version [details]

 Spelling

 for Eunereis elitoralis (Eliason, 1962)

Eliason's original spelling of 'littoral' was a variant spelling of the word with only one 'l'. Bellan's (2001) ... [details]

 Spelling

 for Lumbrineriopsis magnidendata [lapsus for original Lumbrineris magnidentata]

Spelling error of no significance for the species name produced in a checklist (Bellan, 2001: 219), and it seems ... [details]

 Spelling

 for Typhloscolex phylloides [auct misspelling of phyllodes]

A checklist usage (Bellan 2001: 231) as "phylloides Reibich, 1895" which is a misspelling of both the species name ... [details]

 Taxonomy

 for Glyphohesione Friedrich, 1950

Listed in ERMS V1 also under family Hesionidae, with same species [details]

 Taxonomy

 for Notoproctus Arwidsson, 1906

Listed in ERMS V1 also under family Capitellidae (Polychaeta), with same species [details]

 Taxonomy

 for Notoproctus oculatus Arwidsson, 1906

?= Notoproctus oculatus Arwidsson, 1907, Maldanidae [details]