Abatus beatriceae (Larrain, 1986) (basis of record)
Abatus beatriceae (Larrain, 1986) (extant flag source)
Abatus beatriceae (Larrain, 1986) (habitat flag source)
Abatus bidens Mortensen, 1910 (habitat flag source)
Abatus bidens Mortensen, 1910 (extant flag source)
Abatus bidens Mortensen, 1910 (basis of record)
Abatus cavernosus (Philippi, 1845) (extant flag source)
Abatus cavernosus (Philippi, 1845) (habitat flag source)
Abatus cavernosus (Philippi, 1845) (basis of record)
Abatus cordatus (Verrill, 1876) (extant flag source)
Abatus cordatus (Verrill, 1876) (habitat flag source)
Abatus cordatus (Verrill, 1876) (basis of record)
Abatus curvidens Mortensen, 1836 (extant flag source)
Abatus curvidens Mortensen, 1836 (basis of record)
Abatus curvidens Mortensen, 1836 (habitat flag source)
Abatus elongatus (Koehler, 1908) (basis of record)
Abatus elongatus (Koehler, 1908) (extant flag source)
Abatus elongatus (Koehler, 1908) (habitat flag source)
Abatus ingens Koehler, 1926 (habitat flag source)
Abatus nimrodi (Koehler, 1911) (habitat flag source)
Abatus philippii Lovén, 1871 (habitat flag source)
Abatus shackletoni Koehler, 1911 (basis of record)
Abatus shackletoni Koehler, 1911 (habitat flag source)
Abatus shackletoni Koehler, 1911 (extant flag source)
Abyssinoe abyssorum (McIntosh, 1885) accepted as Abyssoninoe abyssorum (McIntosh, 1885) (extant flag source)
Abyssinoe abyssorum (McIntosh, 1885) accepted as Abyssoninoe abyssorum (McIntosh, 1885) (basis of record)
Abyssinoe abyssorum (McIntosh, 1885) accepted as Abyssoninoe abyssorum (McIntosh, 1885) (source of synonymy)
Abyssinoe abyssorum (McIntosh, 1885) accepted as Abyssoninoe abyssorum (McIntosh, 1885) (habitat flag source)
Abyssoclymene Hartman, 1967 (habitat flag source)
Abyssoclymene Hartman, 1967 (extant flag source)
Abyssoclymene Hartman, 1967 (basis of record)
Abyssoclymene annularis Hartman, 1967 (habitat flag source)
Abyssoclymene annularis Hartman, 1967 (extant flag source)
Abyssoclymene annularis Hartman, 1967 (basis of record)
Abyssocucumis liouvillei (Vaney, 1914) Gutt, 1988 (habitat flag source)
Abyssocucumis liouvillei (Vaney, 1914) Gutt, 1988 (basis of record)
Abyssocucumis liouvillei (Vaney, 1914) Gutt, 1988 (extant flag source)
Abyssocucumis tourqueti (Vaney, 1906) (basis of record)
Abyssocucumis tourqueti (Vaney, 1906) (habitat flag source)
Abyssocucumis tourqueti (Vaney, 1906) (extant flag source)
Abyssogyra A. H. Clarke, 1961 accepted as Moelleriopsis Bush, 1897 (extant flag source)
Abyssogyra A. H. Clarke, 1961 accepted as Moelleriopsis Bush, 1897 (basis of record)
Abyssogyra A. H. Clarke, 1961 accepted as Moelleriopsis Bush, 1897 (habitat flag source)
Abyssogyra vemae Clarke, 1961 (basis of record)
Abyssogyra vemae Clarke, 1961 (habitat flag source)
Abyssogyra vemae Clarke, 1961 (extant flag source)
Acantharcturus acanthurus (Monod, 1925) (habitat flag source)
Acantharcturus acutipleon Schultz, 1981 (habitat flag source)
Acanthascus australis (Topsent, 1901) (extant flag source)
Acanthascus australis (Topsent, 1901) (basis of record)
Acanthascus australis (Topsent, 1901) (habitat flag source)
Acanthaspidia acanthonotus Beddard, 1886 (habitat flag source)
Acanthaspidia drygalskii Vanhöffen, 1914 (habitat flag source)
Acanthaspidia iolanthoidea Vasina & Kussakin, 1982 (habitat flag source)
Acanthaspidia pleuronotus (Menzies & Schultz, 1967) (habitat flag source)
Acanthaspidia porrecta Menzies & Schultz, 1968 (habitat flag source)
Acantholaimus calathus Gerlach, 1979 (basis of record)
Acantholaimus calathus Gerlach, 1979 (extant flag source)
Acantholaimus calathus Gerlach, 1979 (habitat flag source)
Acantholaimus minutus (Vitiello, 1970) (extant flag source)
Acantholaimus minutus (Vitiello, 1970) (habitat flag source)
Acantholaimus minutus (Vitiello, 1970) (basis of record)
Acanthomunna spinipes (Vanhöffen, 1914) (habitat flag source)
Acanthopharynx merostomacha (Steiner, 1921) (habitat flag source)
Acanthophragma Hayward, 1993 (habitat flag source)
Acanthophragma Hayward, 1993 (extant flag source)
Acanthophragma Hayward, 1993 (basis of record)
Acanthophragma polaris Hayward, 1993 (basis of record)
Acanthophragma polaris Hayward, 1993 (extant flag source)
Acanthophragma polaris Hayward, 1993 (habitat flag source)
Acanthorhabdus fragilis Burton, 1929 (habitat flag source)
Acanthoserolis polaris (Richardson, 1911) (habitat flag source)
Acanthoserolis schythei (Lütken, 1858) (habitat flag source)
Accalathura gigantissima Poore, 1981 (basis of record)
Accalathura gigantissima Poore, 1981 (habitat flag source)
Accalathura gigantissima Poore, 1981 (extant flag source)
Accalathura gigantissima Kussakin, 1967 (habitat flag source)
Acheliderma topsenti Burton, 1932 accepted as Megaciella topsenti (Burton, 1932) (extant flag source)
Acheliderma topsenti Burton, 1932 accepted as Megaciella topsenti (Burton, 1932) (source of synonymy)
Acheliderma topsenti Burton, 1932 accepted as Megaciella topsenti (Burton, 1932) (basis of record)
Acheliderma topsenti Burton, 1932 accepted as Megaciella topsenti (Burton, 1932) (habitat flag source)
Achlyonice violaecuspidata Gutt, 1990 (habitat flag source)
Achlyonice violaecuspidata Gutt, 1990 (extant flag source)
Achlyonice violaecuspidata Gutt, 1990 (basis of record)
Achoronemertes Crandall & Gibson, 1998 (extant flag source)
Achoronemertes Crandall & Gibson, 1998 (habitat flag source)
Achoronemertes Crandall & Gibson, 1998 (basis of record)
Achoronemertes scoresbyi (Wheeler, 1934) (habitat flag source)
Achoronemertes scoresbyi (Wheeler, 1934) (basis of record)
Achoronemertes scoresbyi (Wheeler, 1934) (extant flag source)
Achramorpha truncata (Topsent, 1908) (habitat flag source)
Acirsa antarctica (E.A. Smith, 1907) (extant flag source)
Acirsa antarctica (E.A. Smith, 1907) (basis of record)
Acirsa antarctica (E.A. Smith, 1907) (habitat flag source)
Acirsa symphylla (Martens, 1878) (basis of record)
Acirsa symphylla (Martens, 1878) (extant flag source)
Acirsa symphylla (Martens, 1878) (habitat flag source)
Acodontaster capitatus (Koehler, 1912) (habitat flag source)
Acodontaster conspicuus (Koehler, 1920) (habitat flag source)
Acodontaster conspicuus (Koehler, 1920) (extant flag source)