Aaptos aaptos (Schmidt, 1864) (habitat flag source)
Aaptos papillata (Keller, 1880) (basis of record)
Aaptos papillata (Keller, 1880) (extant flag source)
Aaptos papillata (Keller, 1880) (habitat flag source)
Aartsenia candida (Møller, 1842) (basis of record)
Aartsenia candida (Møller, 1842) (extant flag source)
Aartsenia candida (Møller, 1842) (habitat flag source)
Abarenicola claparedei (Levinsen, 1884) (basis of record)
Abarenicola claparedei (Levinsen, 1884) (extant flag source)
Abarenicola claparedei (Levinsen, 1884) (habitat flag source)
Abditodentrix rhomboidalis (Millett, 1899) (basis of record)
Abditodentrix rhomboidalis (Millett, 1899) (extant flag source)
Abditodentrix rhomboidalis (Millett, 1899) (habitat flag source)
Abludomelita aculeata (Chevreux, 1911) (habitat flag source)
Abludomelita gladiosa (Bate, 1862) (habitat flag source)
Abludomelita obtusata (Montagu, 1813) (habitat flag source)
Abollifer prolabens Vørs, 1992 (basis of record)
Abollifer prolabens Vørs, 1992 (extant flag source)
Abollifer prolabens Vørs, 1992 (habitat flag source)
Abothrium van Beneden, 1871 (basis of record)
Abothrium van Beneden, 1871 (extant flag source)
Abothrium van Beneden, 1871 (habitat flag source)
Abothrium gadi van Beneden, 1871 (basis of record)
Abothrium gadi van Beneden, 1871 (extant flag source)
Abothrium gadi van Beneden, 1871 (habitat flag source)
Abra alba (W. Wood, 1802) (habitat flag source)
Abra longicallus (Scacchi, 1835) (basis of record)
Abra longicallus (Scacchi, 1835) (extant flag source)
Abra longicallus (Scacchi, 1835) (habitat flag source)
Abra nitida (O.F. Müller, 1776) (habitat flag source)
Abra ovata Philippi, 1836 accepted as Abra segmentum (Récluz, 1843) (basis of record)
Abra ovata Philippi, 1836 accepted as Abra segmentum (Récluz, 1843) (source of synonymy)
Abra ovata Philippi, 1836 accepted as Abra segmentum (Récluz, 1843) (extant flag source)
Abra ovata Philippi, 1836 accepted as Abra segmentum (Récluz, 1843) (habitat flag source)
Abra prismatica (Montagu, 1808) (habitat flag source)
Abra profundorum (E.A. Smith, 1885) (habitat flag source)
Abra segmentum (Récluz, 1843) (basis of record)
Abra segmentum (Récluz, 1843) (extant flag source)
Abra segmentum (Récluz, 1843) (habitat flag source)
Abra tenuis (Montagu, 1803) (habitat flag source)
Abralia veranyi (Rüppell, 1844) (habitat flag source)
Abraliopsis pfefferi Joubin, 1896 (habitat flag source)
Absidia spinosa Lendn., 1905 (habitat flag source)
Abyssidrilus Erséus, 1992 (basis of record)
Abyssidrilus Erséus, 1992 (extant flag source)
Abyssidrilus Erséus, 1992 (habitat flag source)
Abyssidrilus profundus (Cook, 1970) (basis of record)
Abyssidrilus profundus (Cook, 1970) (extant flag source)
Abyssidrilus profundus (Cook, 1970) (habitat flag source)
Abyssinoe [auct.] accepted as Abyssoninoe Orensanz, 1990 (basis of record)
Abyssinoe [auct.] accepted as Abyssoninoe Orensanz, 1990 (extant flag source)
Abyssinoe [auct.] accepted as Abyssoninoe Orensanz, 1990 (habitat flag source)
Abyssinoe scopa accepted as Abyssoninoe scopa (Fauchald, 1974) sensu Miura, 1980 (basis of record)
Abyssinoe scopa accepted as Abyssoninoe scopa (Fauchald, 1974) sensu Miura, 1980 (source of synonymy)
Abyssinoe scopa accepted as Abyssoninoe scopa (Fauchald, 1974) sensu Miura, 1980 (extant flag source)
Abyssinoe scopa accepted as Abyssoninoe scopa (Fauchald, 1974) sensu Miura, 1980 (habitat flag source)
Abyssocucumis abyssorum (Théel, 1886) (basis of record)
Abyssocucumis abyssorum (Théel, 1886) (extant flag source)
Abyssocucumis abyssorum (Théel, 1886) (habitat flag source)
Abyssoninoe abyssorum (McIntosh, 1885) (basis of record)
Abyssoninoe abyssorum (McIntosh, 1885) (extant flag source)
Abyssoninoe abyssorum (McIntosh, 1885) (habitat flag source)
Abyssoninoe hibernica (Mc Intosh, 1903) (basis of record)
Abyssoninoe hibernica (Mc Intosh, 1903) (extant flag source)
Abyssoninoe hibernica (Mc Intosh, 1903) (habitat flag source)
Abyssoninoe scopa (Fauchald, 1974) sensu Miura, 1980 (basis of record)
Abyssoninoe scopa (Fauchald, 1974) sensu Miura, 1980 (extant flag source)
Abyssoninoe scopa (Fauchald, 1974) sensu Miura, 1980 (habitat flag source)
Abyssorchomene abyssorum (Stebbing, 1888) (basis of record)
Abyssorchomene abyssorum (Stebbing, 1888) (extant flag source)
Abyssorchomene abyssorum (Stebbing, 1888) (habitat flag source)
Abyssorchomene chevreuxi (Stebbing, 1906) (basis of record)
Abyssorchomene chevreuxi (Stebbing, 1906) (extant flag source)
Abyssorchomene chevreuxi (Stebbing, 1906) (habitat flag source)
Acaenomolgus Humes & Stock, 1972 (basis of record)
Acaenomolgus protulae (Stock, 1959) (basis of record)
Acaenomolgus protulae (Stock, 1959) (extant flag source)
Acaenomolgus protulae (Stock, 1959) (habitat flag source)
Acaenomolgus serpulae (Stock, 1960) (basis of record)
Acaenomolgus serpulae (Stock, 1960) (extant flag source)
Acaenomolgus serpulae (Stock, 1960) (habitat flag source)
Acanthamoeba gigantea Schmoller, 1964 (basis of record)
Acanthamoeba gigantea Schmoller, 1964 (extant flag source)
Acanthancora Topsent, 1927 (basis of record)
Acanthancora Topsent, 1927 (extant flag source)
Acanthancora Topsent, 1927 (habitat flag source)
Acanthancora clavatancora Topsent, 1927 accepted as Pseudohalichondria clavatancora (Topsent, 1927) (basis of record)
Acanthancora clavatancora Topsent, 1927 accepted as Pseudohalichondria clavatancora (Topsent, 1927) (source of synonymy)
Acanthancora clavatancora Topsent, 1927 accepted as Pseudohalichondria clavatancora (Topsent, 1927) (extant flag source)
Acanthancora clavatancora Topsent, 1927 accepted as Pseudohalichondria clavatancora (Topsent, 1927) (habitat flag source)
Acanthancora schmidti (Topsent, 1898) (basis of record)
Acanthancora schmidti (Topsent, 1898) (extant flag source)
Acanthancora schmidti (Topsent, 1898) (habitat flag source)
Acanthaspidia decorata (Hansen, 1895) (habitat flag source)
Acanthaspidia laevis Chardy, 1978 (habitat flag source)
Acanthaspidia typhlops (G.O. Sars, 1879) (habitat flag source)
Acanthella acuta Schmidt, 1862 (basis of record)
Acanthella acuta Schmidt, 1862 (extant flag source)
Acanthella acuta Schmidt, 1862 (habitat flag source)
Acanthella annulata Sarà, 1958 (basis of record)