Tripoplax abyssicola (A.G. Smith & E. Cowan,1966) Aleutians Islands55 mm
Ischnochiton acomphus A.F.B. Hull& J.J. Risbec, 1930 New Caledonia
Lepidozona acostata Sirenko, 2016
Stenoplax acrior H.A. Pilsbry, 1892 Mexico
Ischnochiton adelaidensis (L.A. Reeve, 1847) Australia, Townsville
Lepidozona aequispinus J.R.M. Bergenhayn, 1933
Ischnochiton aidae G. Righi, 1973 Brazil
Ischnochiton alascensis K.H.J. Thiele, 1909 Alaska
Stenoplax alata (G.B. II Sowerby, 1841) Philippines, Olango Island51,3 mm
Tripoplax alba (H. Saito, 2013)
Ischnochiton albidus K.V.W. Palmer, 1945
Ischnochiton albinus K.H.J. Thiele, 1911
Tripoplax albrechtii (L. von Schrenck, 1862) Korea50 mm
Stenosemus albus (C. Linnaeus, 1767) Iceland, Grota island10,3 mm
Tripoplax allyni (A. Ferreira, 1977) Aleutian islands, Chuginadak Island
Lepidozona allynsmithi A. Ferreira, 1974 Mexico, Baja California
Allochiton altus (FOSSIL) Fucini, 1912 † Italy, Sicily
Lepidozona amabilis (S.S. Berry, 1917) Japan
Tripoplax andrijaschevi (A.M. Jakovleva, 1952) Russia, Sachalin
Ischnochiton anserinus (FOSSIL) (G.F. Laghi, 1977 †) Italy, Sicily, Palermo
Ischnochiton arbutum (L.A. Reeve, 1847) Australia, Keppel Bay
Stenoplax arythronota (C.B. Adams, 1845)
Ischnochiton aspidaulax H.A. Pilsbry, 1896
Tripoplax attuensis (K.B. Clark, 2000)
Ischnochiton australis (G.B. II Sowerby, 1833) Australia, Victoria47,4 mm
Stenoplax bahamensis P. Kaas & R.A. Van Belle,1987 Bahamas
Ischnochiton bakeri W.G. Torr, 1912
Tripoplax balaenophila (E. Schwabe& J. Sellanes, 2004)
Tripoplax baxteri (K.B. Clark, 2000) Aleutian Islands, Unalaska Island
Ischnochiton bergoti (C. Vélain, 1877) South Africa, Kommetjie18 mm
Tripoplax beringiana (K.B. Clark, 2000) Alaska, Mitkof Island14,7 mm
Lepidozona beui H.B. O'Neill, 1987 New Zealand
Ischnochiton bigranosus P. Kaas & R.A. Van Belle,1990
Bathychiton biondii B. Dell'Angelo& S. Palazzi, 1988 Mediterranean Sea3 mm
Lepidozona bisculpta (P.P. Carpenter in H.A. Pilsbry, 1892) Hong Kong