Traits Taxon list
Abyssorhynchia craneana (Dall, 1895)
Abyssothyris briggsi Cooper, 1978 †
Abyssothyris wyvillei (Davidson, 1878)
Acanthalosia deari (Briggs, 1998) †
Acanthalosia domina Waterhouse, 1986 †
Acanthalosia mcclungi (Briggs, 1998) †
Acanthalosia mysteriosa Waterhouse, 2010 †
Acanthambonia minutisima Cooper, 1956 †
Acanthobasiliola doederleini (Davidson, 1886)
Acanthocrania alta Cooper & Grant, 1974 †
Acanthocrania conferta Cooper & Grant, 1974 †
Acanthocrania cracentis Wright, 1963 †
Acanthocrania densispina Cooper & Grant, 1974 †
Acanthocrania elusa Cocks, 2014 †
Acanthocrania intermedia Cooper & Grant, 1974 †
Acanthocrania magna Cooper & Grant, 1974 †
Acanthocrania minutispinosa Cooper & Grant, 1974 †
Acanthocrania nordtimanica Kalashnikov, 1993 †
Acanthocrania platys Cooper & Grant, 1974 †
Acanthocrania regularis Cooper & Grant, 1974 †
Acanthocrania vasta Cooper & Grant, 1974 †
Acrobelesia cooperi (d'Hondt, 1976)
Acrobrochus aldingi (Tate, 1880) †
Acrobrochus blochmanni (Jackson, 1912)
Acrobrochus marotiriensis Bitner, 2007
Acrobrochus tateana (Tenison-Woods, 1878) †
Acrobrochus vema (Cooper, 1973)
Acrosaccus cuniculum Valentine, Brock & Molloy, 2003 †
Acrotretella dizeugosa Valentine et al., 2006 †
Acrotretella goodridgei Valentine et al., 2003 †
Acrotretella siluriana Ireland, 1961 †
Adnatida deformis (Tate, 1880) †
Adnatida gnangarensis Richardson, 1991 †
Adolfia solita Ljaschenko, 1959 †
Adolfispirifer jeremejewi (Tschernyschew, 1887) †
Adolfispirifer sanjuanensis Savage & Baxter, 1995 †
Aegiria norvegica Öpik, 1933 †
Aemula inusitata Steinich, 1968 †
Aenigmathyris stearnsi Cooper, 1971 †
Aerothyris kerguelensis (Davidson, 1878)
Aerothyris macquariensis (Thomson, 1918)
Aetheia gualteri (Morris, 1850) †
Agulhasia davidsoni King, 1871
Agulhasia densicostata Cooper, 1988 †
Ahtiella dalecarlica Hessland, 1949 †
Ahtiella jaanussoni Hessland, 1949 †
Ahtiella oelandica Hessland, 1949 †
Ahtiella plana Hessland, 1949 †
Airtonia hudsoni Cope, 1934 †
Aksarinaia subtilicrusta Percival & Kruse, 2014 †
Aksarinaia triquetra Koneva, 1992 †
Alabushevothyris angusta Smirnova, 1994 †
Alaskothyris frosti Blodgett, Baranov & Santucci, 2015 †
Aldingia furculifera (Tate, 1880) †
Aldingia willemoesi (Davidson, 1878)
Alekseevathyris coronadosensis Baranov & Blodgett, 2018 †
Aliquantula insolita (Tate, 1880) †
Aliquantula tapirina (Hutton, 1873) †
Alispirifer contractus Maxwell, 1964 †
Alispirifer laminosus Campbell, 1961 †
Alispirifer laminosus undatus Campbell, 1961 †
Alispirifer tamaulipensis Sour-Tovar, Álvarez, & Martínez-Chacón, 2005 †
Alispirifer transversus Maxwell, 1964 †
Alkhovikovia importuna Baranov, 2007 †
Alkhovikovia libera Baranov, 2007 †
Allorhynchus scientiana Torres-Martínez & Sour-Tovar, 2022 †
Alocorthis psygmatelos Paterson & Brock, 2003 †
Alwynella ildjernensis Spjeldnæs, 1957 †
Alwynella intermedia Spjeldnæs, 1957 †
Alwynella osloensis Spjeldnæs, 1957 †
Amazonoproductus amazonensis Chen, Tazawa, Shi & Matsuda, 2004 †
Ambikella elongata (McClung & Armstrong, 1975) †
Amictocracens teres Henderson & MacKinnon, 1981 †
Amphipella arcaria Cooper & Grant, 1969 †
Amphipella attenuata Cooper & Grant, 1976 †
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)
Anabolotreta tegula Rowell & Henderson, 1978 †
Anakinetica breva Richardson, 1991 †
Anakinetica compta (Sowerby, 1845) †
Anakinetica cumingi (Davidson, 1852)
Anakinetica recta Richardson, 1991 †
Anakinetica tumida Richardson, 1991 †
Anastrophia magnifica Kozlowski, 1929 †
Anastrophia magnifica australis Savage, 1971 †
Ancorellina ageri Mancenido & Damborenea, 1991 †
Andronovia geremgandzhensis Baranov & Blodgett, 2022 †
Aneboconcha obscura Cooper, 1973
Aneboconcha smithii (Pfeffer, 1886)
Anemonaria mitis (Hill, 1950) †
Angustothyris dagysi Guo, Chen, & Harper, 2019 †
Angustothyris qingyanensis Guo, Chen, & Harper, 2019 †
Anisopleurella anceps Mitchell, 1977 †
Anisopleurella tricostellata Cooper, 1956 †
Annuloplatidia annulata (Atkins, 1959)