Abyssoninoe hibernica Parapar et al., 1994 – synonym of Abyssoninoe hibernica
Abyssoninoe scopa – synonym of Abyssoninoe hibernica
Abyssoninoe scopa Orensanz, 1990 – synonym of Abyssoninoe hibernica
Acanthicolepis asperrima McIntosh, 1900 – synonym of Acanthicolepis asperrima
Adyte pellucida Tebble & Chambers, 1982 – synonym of Adyte pellucida
Aglaophamus rubella – synonym of Aglaophamus rubella
Aglaophamus rubella Fauchald, 1963 – synonym of Aglaophamus rubella
Alciopa reynaudii Audouin & Milne-Edwards, 1833 – synonym of Alciopa reynaudii
Alentia gelatinosa Hartmann-Schröder, 1971 – synonym of Alentia gelatinosa
Alkmaria romijni Horst, 1919 – synonym of Alkmaria romijni
Amaea trilobata – synonym of Amaeana trilobata
Amaea trilobata Malmgren, 1865 – synonym of Amaeana trilobata
Amaeana trilobata Hartmann-Schröder, 1971 – synonym of Amaeana trilobata
Amage auricula Malmgren, 1866 – synonym of Amage auricula
Amblyosyllis formosa Hartmann-Schröder, 1971 – synonym of Amblyosyllis formosa
Ammochares assimilis – synonym of Owenia fusiformis
Ammochares assimilis Moebius – synonym of Owenia fusiformis
Ammotrypane abranchiata – synonym of Ophelina abranchiata
Ammotrypane abranchiata Eliason, 1962 – synonym of Ophelina abranchiata
Ammotrypane aulogaster – synonym of Ophelina acuminata
Ammotrypane aulogaster McIntosh, 1915 – synonym of Ophelina acuminata
Ammotrypane cylindricaudata – synonym of Ophelina cylindricaudata
Ammotrypane cylindricaudata Hansen, 1878 – synonym of Ophelina cylindricaudata
Ammotrypane limacina – synonym of Ophelia limacina
Ammotrypane limacina Rathke, 1843 – synonym of Ophelia limacina
Ammotrypane oestoides – synonym of Travisia forbesii
Ammotrypane oestoides Rathke, 1843 – synonym of Travisia forbesii
Ammotrypane sarsi – synonym of Ophelina modesta
Ammotrypane sarsi Eliason, 1962 – synonym of Ophelina modesta
Ampharete acutifrons Hessle, 1917 – synonym of Ampharete acutifrons
Ampharete arctica – synonym of Ampharete finmarchica
Ampharete arctica Malmgren, 1866 – synonym of Ampharete finmarchica
Ampharete baltica Hothe, 1986 – synonym of Ampharete baltica
Ampharete falcata Eliason, 1955 – synonym of Ampharete falcata
Ampharete finmarchica Hartmann-Schröder, 1971 – synonym of Ampharete finmarchica
Ampharete Goesi Malmgren, 1866 – synonym of Ampharete goesi
Ampharete gracilis – synonym of Anobothrus gracilis
Ampharete gracilis Malmgren, 1866 – synonym of Anobothrus gracilis
Ampharete grubei – synonym of Ampharete acutifrons
Ampharete grubei Malmgren, 1866 – synonym of Ampharete acutifrons
Ampharete grubei var. baltica – synonym of Ampharete baltica
Ampharete grubei var. baltica Eliason, 1955 – synonym of Ampharete baltica
Ampharete Lindströmi Malmgren, 1867 – synonym of Ampharete lindstroemi
Amphicora mediterranea – synonym of Amphiglena mediterranea
Amphicora mediterranea Leydig, 1851 – synonym of Amphiglena mediterranea
Amphicora sabella – synonym of Fabricia stellaris
Amphicora sabella Ehrenberg, 1836 – synonym of Fabricia stellaris
Amphicteis acutifrons – synonym of Ampharete acutifrons
Amphicteis acutifrons Grube, 1860 – synonym of Ampharete acutifrons
Amphicteis finmarchica – synonym of Ampharete finmarchica
Amphicteis finmarchica Sars, 1864 – synonym of Ampharete finmarchica
Amphicteis fragilis – synonym of Lysippides fragilis
Amphicteis fragilis Wollebaek, 1912 – synonym of Lysippides fragilis
Amphicteis gunneri – synonym of Amphicteis midas
Amphicteis gunneri Auctt. part – synonym of Amphicteis midas
Amphicteis gunneri Sars, 1865 – synonym of Amphicteis gunneri
Amphicteis invalida – synonym of Hypania invalida
Amphicteis invalida Grube, 1860 – synonym of Hypania invalida
Amphicteis midas Hartley, 1985 – synonym of Amphicteis midas
Amphicteis Sundevalli Malmgren, 1866 – synonym of Amphicteis sundevalli
Amphictene auricoma – synonym of Pectinaria auricoma
Amphictene auricoma Malmgren, 1865 – synonym of Pectinaria auricoma
Amphiglena mediterranea Saint-Joseph, 1894 – synonym of Amphiglena mediterranea
Amphitrite affinis – synonym of Neoamphitrite affinis
Amphitrite affinis Malmgren, 1866 – synonym of Neoamphitrite affinis
Amphitrite auricoma – synonym of Pectinaria auricoma
Amphitrite auricoma O.F. Müller, 1776 – synonym of Pectinaria auricoma
Amphitrite bombyx – synonym of Branchiomma bombyx
Amphitrite bombyx Dalyell, 1853 – synonym of Branchiomma bombyx
Amphitrite cincinnata – synonym of Thelepus cincinnatus
Amphitrite cincinnata Fabricius, 1780 – synonym of Thelepus cincinnatus
Amphitrite cirrata O.F. Müller, 1771 in 1776 – synonym of Amphitrite cirrata
Amphitrite cristata – synonym of Pista cristata
Amphitrite cristata O.F. Müller, 1776 – synonym of Pista cristata
Amphitrite curvipalea – synonym of Amphicteis gunneri
Amphitrite curvipalea Claparède, 1870 – synonym of Amphicteis gunneri
Amphitrite gracilis – synonym of Amphitritides gracilis
Amphitrite gracilis Fauvel, 1927 – synonym of Amphitritides gracilis
Amphitrite grayi – synonym of Neoamphitrite grayi
Amphitrite grayi Malmgren, 1866 – synonym of Neoamphitrite grayi
Amphitrite groenlandica – synonym of Amphicteis gunneri
Amphitrite groenlandica – synonym of Neoamphitrite groenlandica
Amphitrite groenlandica Grube, 1860 – synonym of Amphicteis gunneri
Amphitrite groenlandica Malmgren, 1866 – synonym of Neoamphitrite groenlandica
Amphitrite Gunneri Sars, 1835 – synonym of Amphicteis gunneri
Amphitrite intermedia – synonym of Neoamphitrite affinis
Amphitrite intermedia Malmgren, 1866 – synonym of Neoamphitrite affinis
Amphitrite johnstoni – synonym of Neoamphitrite figulus
Amphitrite johnstoni Malmgren, 1866 – synonym of Neoamphitrite figulus
Amphitrite nesidensis – synonym of Eupolymnia nesidensis
Amphitrite nesidensis Delle Chiaje, 1828 – synonym of Eupolymnia nesidensis
Amphitrite palmata – synonym of Amphitrite cirrata
Amphitrite palmata – synonym of Neoamphitrite affinis
Amphitrite palmata Malmgren, 1866 – synonym of Neoamphitrite affinis
Amphitrite palmata Moore, 1905 – synonym of Amphitrite cirrata
Amphitrite plumosa – synonym of Pherusa plumosa
Amphitrite plumosa Müller, 1776 – synonym of Pherusa plumosa
Amphitrite radiata – synonym of Amphitrite cirrata
Amphitrite radiata Moore, 1908 – synonym of Amphitrite cirrata
Amphitrite reniformis – synonym of Pseudopotamilla reniformis
Amphitrite reniformis O.F. Müller, 1771 – synonym of Pseudopotamilla reniformis
Amphitrite scylla – synonym of Amphitritides gracilis
Amphitrite scylla (non Savigny) McIntosh, 1922 – synonym of Amphitritides gracilis
Amphitrite volutacornis – synonym of Bispira volutacornis
Amphitrite volutacornis Montagu, 1804 – synonym of Bispira volutacornis
Amphitrite zostericola – synonym of Nicolea zostericola
Amphitrite zostericola Tauber, 1879 – synonym of Nicolea zostericola
Amphitritides gracilis Hartmann-Schröder, 1971 – synonym of Amphitritides gracilis
Amythasides macroglossus Eliason, 1955 – synonym of Amythasides macroglossus
Anaites jeffreysii – synonym of Phyllodoce longipes
Anaites jeffreysii McIntosh, 1908 – synonym of Phyllodoce longipes
Anaitides citrina – synonym of Phyllodoce citrina
Anaitides citrina Bergström, 1914 – synonym of Phyllodoce citrina
Anaitides groenlandica – synonym of Phyllodoce groenlandica
Anaitides groenlandica Bergström, 1914 – synonym of Phyllodoce groenlandica
Anaitides lineata – synonym of Phyllodoce lineata
Anaitides lineata Hartmann-Schröder, 1971 – synonym of Phyllodoce lineata
Anaitides longipes – synonym of Phyllodoce longipes
Anaitides longipes Gathof, 1984 – synonym of Phyllodoce longipes
Anaitides maculata – synonym of Phyllodoce maculata
Anaitides maculata Bergström, 1914 – synonym of Phyllodoce maculata
Anaitides mucosa – synonym of Phyllodoce mucosa
Anaitides mucosa Bergström, 1914 – synonym of Phyllodoce mucosa
Anaitides rosea – synonym of Phyllodoce rosea
Anaitides rosea O'Connor, 1987 – synonym of Phyllodoce rosea
Anaitides subulifera – synonym of Phyllodoce rosea
Anaitides subulifera Eliason, 1962 – synonym of Phyllodoce rosea
Anaitis kosteriensis – synonym of Paranaitis kosteriensis
Anaitis kosteriensis Malmgren, 1867 – synonym of Paranaitis kosteriensis
Anaitis lineata – synonym of Phyllodoce lineata
Anaitis lineata Claparède, 1870 – synonym of Phyllodoce lineata
Anaitis rosea – synonym of Phyllodoce rosea
Anaitis rosea McIntosh, 1877 – synonym of Phyllodoce rosea
Anaitis wahlberg – synonym of Paranaitis kosteriensis
Anaitis wahlbergi – synonym of Paranaitis wahlbergi
Anaitis wahlbergi Levinsen, 1893 – synonym of Paranaitis kosteriensis
Anaitis wahlbergi Malmgren, 1865 – synonym of Paranaitis wahlbergi
Ancistrosyllis klatti – synonym of Synelmis klatti
Ancistrosyllis klatti Eliason, 1962 – synonym of Synelmis klatti
Anobothrus gracilis Hessle, 1917 – synonym of Anobothrus gracilis
Antinoe finmarchica Malmgren, 1867 – synonym of Antinoe finmarchica
Antinoe groenlandica – synonym of Bylgides groenlandicus
Antinoe groenlandica Malmgren, 1867 – synonym of Bylgides groenlandicus
Antinoe promamme – synonym of Bylgides groenlandicus
Antinoe promamme Malmgren, 1867part – synonym of Bylgides groenlandicus
Antinoe sarsi – synonym of Bylgides sarsi
Antinoe sarsi Kinberg, MS – synonym of Bylgides sarsi
Antinoe sarsi Malmgren, 1865 – synonym of Bylgides sarsi
Antinoe sarsii forma occidentalis – synonym of Bylgides groenlandicus
Antinoe sarsii forma occidentalis Malm, 1874 – synonym of Bylgides groenlandicus
Antinoe zetlandica – synonym of Eunoe nodosa
Antinoe zetlandica Lankester, 1866 – synonym of Eunoe nodosa
Antinoella angusta – synonym of Bylgides groenlandicus
Antinoella angusta Pettibone, 1963 – synonym of Bylgides groenlandicus
Antinoella finmarchica – synonym of Antinoe finmarchica
Antinoella finmarchica Chambers & Muir, 1997 – synonym of Antinoe finmarchica
Antinoella sarsi – synonym of Antinoe finmarchica
Antinoella sarsi – synonym of Bylgides sarsi
Antinoella sarsi Tebble & Chambers, 1982 – synonym of Antinoe finmarchica
Antinoella sarsi Wolff, 1973 – synonym of Bylgides sarsi
Aonides fulgens – synonym of Paraonis fulgens
Aonides fulgens Levinsen, 1883 – synonym of Paraonis fulgens
Aonides gracilis – synonym of Levinsenia gracilis
Aonides gracilis Tauber, 1879 – synonym of Levinsenia gracilis
Aonides oxycephala Söderström, 1920 – synonym of Aonides oxycephala
Aonides paucibranchiata Southern, 1914 – synonym of Aonides paucibranchiata
Aonis foliosa – synonym of Scolelepis foliosa
Aonis foliosa Audouin & Milne-Edwards, 1833 – synonym of Scolelepis foliosa
Aphrodita aculeata Linnaeus, 1758 – synonym of Aphrodita aculeata
Aphrodita cirrhosa – synonym of Gattyana cirrosa
Aphrodita cirrhosa Pallas, 1766 – synonym of Gattyana cirrosa
Aphrodita clava – synonym of Lepidonotus clava
Aphrodita clava Montagu, 1808 – synonym of Lepidonotus clava
Aphrodita echidna – synonym of Aphrodita aculeata
Aphrodita echidna Small, 1912 – synonym of Aphrodita aculeata
Aphrodita imbricata – synonym of Harmothoe imbricata
Aphrodita imbricata Linnaeus, 1767 – synonym of Harmothoe imbricata
Aphrodita squamata – synonym of Lepidonotus squamatus
Aphrodita squamata Linnaeus, 1758 – synonym of Lepidonotus squamatus
Aphrodite aculeata Fauvel, 1923 – synonym of Aphrodita aculeata
Aphrodite carunculata – synonym of Hermodice carunculata
Aphrodite carunculata Pallas, 1766 – synonym of Hermodice carunculata
Aphropharynx heterochaeta Wilfert, 1974 – synonym of Aphropharynx heterochaeta
Apistobranchus tenuis Orrhage, 1962 – synonym of Apistobranchus tenuis
Apistobranchus tullbergi Eliason, 1916 – synonym of Apistobranchus tullbergi
Apomatus similis Marion & Bobretzky, 1875 – synonym of Apomatus similis
Arenicala branchiales – synonym of Arenicolides ecaudata
Arenicala branchiales Michaelsen, 1896 part – synonym of Arenicolides ecaudata
Arenicola boecki – synonym of Arenicolides ecaudata
Arenicola boecki Rathke, 1843 – synonym of Arenicolides ecaudata
Arenicola ecaudata – synonym of Arenicolides ecaudata
Arenicola ecaudata Johnston, 1865 – synonym of Arenicolides ecaudata
Arenicola marina Asworth, 1912 – synonym of Arenicola marina
Arenicola piscatorum – synonym of Arenicola marina
Arenicola piscatorum Oersted, 1843 – synonym of Arenicola marina
Arenicolides ecaudata Wells, 1959 – synonym of Arenicolides ecaudata
Arenotrocha minuta Westheide & Von Nordheim, 1985 – synonym of Arenotrocha minuta
Aricia arctica – synonym of Scoloplos armiger
Aricia arctica Hansen, 1882 – synonym of Scoloplos armiger
Aricia armandi – synonym of Orbinia armandi
Aricia armandi McIntosh, 1910 – synonym of Orbinia armandi
Aricia armiger – synonym of Scoloplos armiger
Aricia armiger Michaelsen, 1896 – synonym of Scoloplos armiger
Aricia kupfferi – synonym of Orbinia kupfferi
Aricia kupfferi Ehlers, 1875 – synonym of Orbinia kupfferi
Aricia latreillii – synonym of Orbinia latreillii
Aricia latreillii Audouin & Milne-Edwards, 1833 – synonym of Orbinia latreillii
Aricia mülleri – synonym of Scoloplos armiger
Aricia mülleri Rathke, 1843 – synonym of Scoloplos armiger
Aricia norvegica – synonym of Orbinia norvegica
Aricia norvegica Sars, 1872 – synonym of Orbinia norvegica
Aricia sertulata – synonym of Orbinia sertulata
Aricia sertulata Savigny, 1820 – synonym of Orbinia sertulata
Aricia tullbergi – synonym of Apistobranchus tullbergi
Aricia tullbergi Théel, 1879 – synonym of Apistobranchus tullbergi
Aricidea albatrossae Pettibone, 1957 – synonym of Aricidea albatrossae
Aricidea catherinae Laubier, 1967 – synonym of Aricidea catherinae
Aricidea cerrutii Laubier, 1966 – synonym of Aricidea cerrutii
Aricidea jeffreysii – synonym of Aricidea cerrutii
Aricidea jeffreysii – synonym of Aricidea suecica
Aricidea jeffreysii (non McIntosh) Fauvel, 1927 – synonym of Aricidea cerrutii
Aricidea jeffreysii (non McIntosh) Hartmann-Schröder, 1971 – synonym of Aricidea suecica
Aricidea minuta Southward, 1956 – synonym of Aricidea minuta
Aricidea simonae Laubier & Ramos, 1973 – synonym of Aricidea simonae
Aricidea suecica – synonym of Aricidea albatrossae
Aricidea suecica – synonym of Aricidea catherinae
Aricidea suecica Eliason, 1920 part – synonym of Aricidea albatrossae
Aricidea suecica Eliason, 1920 part – synonym of Aricidea catherinae
Aricidea suecica Eliason, 1920 part – synonym of Aricidea suecica
Artacama proboscidea Malmgren, 1866 – synonym of Artacama proboscidea
Asclerocheilus intermedius Fauvel, 1927 – synonym of Asclerocheilus intermedius
Asychis biceps – synonym of Chirimia biceps
Asychis biceps Arwidsson, 1906 – synonym of Chirimia biceps
Audouinia tentaculata – synonym of Cirriformia tentaculata
Audouinia tentaculata Fauvel, 1927 – synonym of Cirriformia tentaculata
Austrolaenilla mollis Petitibone, 1963 – synonym of Austrolaenilla mollis
Autolytus alexandri Malmgren, 1867 – synonym of Autolytus alexandri
Autolytus aurantiacus – synonym of Autolytus brachycephalus
Autolytus aurantiacus (non Claparède) Korringa, 1954 – synonym of Autolytus brachycephalus
Autolytus brachycephala – synonym of Autolytus langerhansi
Autolytus brachycephala Southern, 1914 – synonym of Autolytus langerhansi
Autolytus brachycephalus Fauvel, 1923 – synonym of Autolytus brachycephalus
Autolytus cornutu – synonym of Proceraea cornuta
Autolytus cornutus Agassiz, 1862 – synonym of Proceraea cornuta
Autolytus edwarsi Saint-Joseph, 1887 – synonym of Autolytus edwarsi
Autolytus ehbiensis – synonym of Autolytus prolifer
Autolytus ehbiensis Fauvel, 1923 – synonym of Autolytus prolifer
Autolytus inermis Saint-Joseph, 1887 – synonym of Autolytus inermis
Autolytus langerhansi Gidholm, 1967 – synonym of Autolytus langerhansi
Autolytus longeferiens Saint-Joseph, 1887 – synonym of Autolytus longeferiens
Autolytus ornatus – synonym of Autolytus rubropunctatus
Autolytus ornatus (non Verrill) Saint-Joseph, 1887 – synonym of Autolytus rubropunctatus
Autolytus prismaticus – synonym of Proceraea cornuta
Autolytus prismaticus – synonym of Proceraea prismatica
Autolytus prismaticus (non Fabricius) Thorson, 1946 – synonym of Proceraea cornuta
Autolytus prismaticus Pettibone, 1954 – synonym of Proceraea prismatica
Autolytus prolifer – synonym of Autolytus edwarsi
Autolytus prolifer (non Müller) Thorson, 1946 – synonym of Autolytus edwarsi
Autolytus prolifer Fauvel, 1923 – synonym of Autolytus prolifer
Autolytus quinquedecimdentatus
Autolytus quinquedecimdentatus Langerhans, 1884 – synonym of Autolytus quinquedecimdentatus
Autolytus rubrolineatus Gidholm, 1967 – synonym of Autolytus rubrolineatus
Autolytus rubropunctatus Fauvel, 1923 – synonym of Autolytus rubropunctatus
Axionice maculata Harris, 1971 – synonym of Axionice maculata
Axiothea droebachiensis – synonym of Euclymene droebachiensis
Axiothea droebachiensis Malm, 1874 – synonym of Euclymene droebachiensis