• Abyssothyris atlantica Cooper, 1977 accepted as Abyssothyris wyvillei (Davidson, 1878)
• Abyssothyris briggsi Cooper, 1978 †
• Abyssothyris elongata Cooper, 1972 accepted as Abyssothyris wyvillei (Davidson, 1878)
• Abyssothyris fijiensis Elliott, 1960 † accepted as Dicrosia fijiensis (Elliott, 1960) † accepted as Nipponithyris fijiensis (Elliott, 1960) †
• Abyssothyris parva Cooper, 1977 accepted as Abyssothyris wyvillei (Davidson, 1878)
• Abyssothyris wyvillei (Davidson, 1878)
• Acrobelesia cooperi (d'Hondt, 1976)
• Acrobrochus aldingi (Tate, 1880) †
• Acrobrochus blochmanni (Jackson, 1912)
• Acrobrochus hendleri (Cooper, 1982) accepted as Acrobrochus vema (Cooper, 1973)
• Acrobrochus landonensis (Thomson, 1918) †
• Acrobrochus marotiriensis Bitner, 2007
• Acrobrochus tateana (Tenison-Woods, 1878) †
• Acrobrochus vema (Cooper, 1973)
• Adnatida deformis (Tate, 1880) †
• Adnatida gnangarensis Richardson, 1991 †
• Adrenia cernua Chatterton, 1973 †
• Adrenia expansa Chatterton, 1973 †
• Aemula inusitata Steinich, 1968 †
• Aenigmathyris stearnsi Cooper, 1971 †
• Aerothyris eichleri Allan, 1939 accepted as Aneboconcha eichleri (Allan, 1939) accepted as Aerothyris kerguelensis (Davidson, 1878)
• Aerothyris joubini (Blochmann, 1906) accepted as Magellania joubini Blochmann, 1906
• Aerothyris kerguelensis (Davidson, 1878)
• Aerothyris macquariensis (Thomson, 1918)
• Aerothyris smithi (Pfeffer, 1886) accepted as Aneboconcha smithii (Pfeffer, 1886)
• Afilasma beecheri Stehli, 1961 †
• Afilasma inexpectatum Cooper & Dutro, 1982 †
• Agulhasia davidsoni King, 1871
• Agulhasia densicostata Cooper, 1988 †
• Alabushevothyris angusta Smirnova, 1994 †
• Alaskothyris frosti Blodgett, Baranov & Santucci, 2015 †
• Aldingia furculifera (Tate, 1880) †
• Aldingia willemoesi (Davidson, 1878)
• Aldingia woodsii (Tate, 1880) † accepted as Paraldingia woodsii (Tate, 1880) †
• Alekseevathyris coronadosensis Baranov & Blodgett, 2018 †
• Aliquantula insolita (Tate, 1880) †
• Aliquantula tapirina (Hutton, 1873) †
• Alwynia reidi Brunton, 1984 †
• Amphithyris buckmani Thomson, 1918
• Amphithyris cavernicola Nauendorf, Wörheide & Lüter, 2014
• Amphithyris comitodentis Nauendorf, Wörheide & Lüter, 2014
• Amphithyris hallettensis Foster, 1974
• Amphithyris parva Mackinnon, Hiller, Long & Marshall, 2008
• Amphithyris richardsonae Campbell & Fleming, 1981
• Amphithyris seminula (Philippi, 1836)
• Amygdalocosta rara Waterhouse, 1967 †
• Anakinetica breva Richardson, 1991 †
• Anakinetica compta (Sowerby, 1845) †
• Anakinetica cumingi (Davidson, 1852)
• Anakinetica recta Richardson, 1991 †
• Anakinetica tumida Richardson, 1991 †
• Aneboconcha eichleri (Allan, 1939) accepted as Aerothyris kerguelensis (Davidson, 1878)
• Aneboconcha obscura Cooper, 1973
• Aneboconcha smithii (Pfeffer, 1886)
• Angustothyris dagysi Guo, Chen & Harper, 2019 †
• Angustothyris qingyanensis Guo, Chen & Harper, 2019 †
• Annuloplatidia annulata (Atkins, 1959)
• Annuloplatidia curiosa Bitner, 2014
• Annuloplatidia horni (Gabb, 1861)
• Annuloplatidia indopacifica Zezina, 1981
• Annuloplatidia richeri Bitner, 2009
• Arctosia arctica (Friele, 1877)
• Argiope armbrusti Schloenbach, 1866 † accepted as Argyrotheca armbrusti (Schloenbach, 1866) †
• Argiope barrettiana Davidson, 1866 accepted as Argyrotheca barrettiana (Davidson, 1866)
• Argiope barroisi Schulgin, 1885 accepted as Megathiris barroisi (Schulgin, 1885) accepted as Argyrotheca cuneata (Risso, 1826)
• Argiope cistellula (Wood, 1841) accepted as Argyrotheca cistellula (Wood, 1841)
• Argiope clevei Davidson, 1874 † accepted as Argyrotheca clevei (Davidson, 1874) †
• Argiope crenata Sandberger, 1862 † accepted as Joania crenata (Sandberger, 1862) †
• Argiope cuneata (Risso, 1826) accepted as Argyrotheca cuneata (Risso, 1826)
• Argiope detruncata (Gmelin, 1791) accepted as Megathiris detruncata (Gmelin, 1791)
• Argiope dorsata Nielsen, 1928 † accepted as Argyrotheca dorsata (Nielsen, 1928) †
• Argiope globuliformis Schulgin, 1885 (uncertain)
• Argiope kowalevskii Schulgin, 1885 accepted as Joania cordata (Risso, 1826)
• Argiope lunula von Koenen, 1894 † accepted as Argyrotheca lunula (von Koenen, 1894) †
• Argiope megalocephala Sandberger, 1862 † accepted as Argyrotheca megalocephala (Sandberger, 1862) †
• Argiope rugosa Schreiber, 1871 † accepted as Bronnothyris rugosa (Schreiber, 1871) †
• Argiope schrammi Crosse & Fischer, 1866 accepted as Argyrotheca schrammi (Crosse & Fischer, 1866)
• Argiope stevensis Nielsen, 1928 † accepted as Bronnothyris stevensis (Nielsen, 1928) †
• Argiope subradiata Sandberger, 1862 † accepted as Bronnothyris subradiata (Sandberger, 1862) †
• Argiope vonkoeneni Nielsen, 1928 † accepted as Argyrotheca vonkoeneni (Nielsen, 1928) †
• Argiope woodwardiana Davidson, 1866 accepted as Argyrotheca woodwardiana (Davidson, 1866)
• Argyrotheca aequicostata Cooper, 1979 †
• Argyrotheca ageriana Taddei Ruggiero, 1993 † accepted as Joania ageriana (Taddei Ruggiero, 1993) †
• Argyrotheca alta Smirnova, 1972 † accepted as Evargyrotheca alta (Smirnova, 1972) †
• Argyrotheca angulata Zezina, 1987
• Argyrotheca anomala Cooper, 1971 (non Cooper, 1979) †
• Argyrotheca anomala Cooper, 1979 (non Cooper, 1971) †
• Argyrotheca arguta Grant, 1983 accepted as Joania arguta (Grant, 1983)
• Argyrotheca armbrusti (Schloenbach, 1866) †
• Argyrotheca australis (Blochmann, 1910)
• Argyrotheca barrettiana (Davidson, 1866)
• Argyrotheca bermudana Dall, 1911
• Argyrotheca bermudezi Cooper, 1979 †
• Argyrotheca bitnerae Dulai in Dulai & Stachacz, 2011 †
• Argyrotheca bronnii (Roemer, 1841) † accepted as Bronnothyris bronnii (Roemer, 1841) †
• Argyrotheca cistellula (Wood, 1841)
• Argyrotheca clevei (Davidson, 1874) †
• Argyrotheca concinna Smirnova, 1972 † accepted as Krimargyrotheca concinna (Smirnova, 1972) †
• Argyrotheca coniuncta Steinich, 1965 † accepted as Bronnothyris coniuncta (Steinich, 1965) †
• Argyrotheca cooperi Logan & Bitner, 2013