Entemnotrochus adansonianus (J.C.H. Crosse& P.H. Fischer, 1861) Honduras, Roatan Island135,2 mm
Entemnotrochus adansonianus bermudensis T.A. Okutani & Y. Goto,1983 Bermuda59 mm
Bayerotrochus africanus (J.R. le B. Tomlin, 1948) China, Zhejiang126 mm
Pleurotomaria agarista (FOSSIL) Billings, 1865 †
Perotrochus allani (FOSSIL) J. Marwick, 1928 †
Perotrochus amabilis (F.M. Bayer, 1963) Florida Keys
Perotrochus amabilis coltrorum E. de C. Rios, 2003 Colombia65,5 mm
Pleurotomaria amalthea (FOSSIL) Klipstein, 1843 † Italy, Trentino-Alto Adige, Bolzano
Pleurotomaria amalthei (FOSSIL) F.A. von Quenstedt,1858 †
Pleurotomaria anglica (FOSSIL) (Sowerby, 1818 †) Chile, Antofagasta
Pleurotomaria angulosa (FOSSIL) d'Orbigny, 1842 † Bolivia, La Paz, Omasuyos
Bathrotomaria annejoffeae (FOSSIL) M.G. Harasewych& S. Kiel, 2007 † Madagascar, Toliary, Atsimo-Andrefana
Anodomaria anodosa (FOSSIL) J. Szabo, 1980 † Hungary, Veszprém
Perotrochus anseeuwi T. Kanazawa & Y. Goto,1991 Philippines, Balut Island29 mm
Pleurotomaria anstedi (FOSSIL) Forbes † UK, England, Surrey
Pleurotomaria antitorquata (FOSSIL) Münster, 1840 †
Murihikua aparima (FOSSIL) Begg & J. Grant-Mackie,2003 † New Zealand, Nelson, Tasman
Pleurotomaria apicialis (FOSSIL) J.W. Hall, 1876 † United States, New York, Tioga
Sisenna apsara (FOSSIL) Delpey, 1941 † Cambodia, Sisophon
Pleurotomaria aratula (FOSSIL) J.L.M. Defrance 1826 †
Pleurotomaria arctica (FOSSIL) F. Toula, 1875 †
Pleurotomaria arenaria (FOSSIL) Girty, 1909 † USA, Texas, Culberson
Pleurotomaria armata (FOSSIL) Münster, 1844 † Germany, Baden-Württemberg, Emmendingen66 mm
Bathrotomaria ashburneri (FOSSIL) Cox † UK, England, East Sussex
Leptomaria asurai (FOSSIL) Das & al., 2005 † India, Gujarat, Kachchh
Perotrochus atlanticus E. de C. Rios& H.R. Matthews, 1968 Brazil, Cabo Frio79 mm
Perotrochus atlanticus notialis L. Penna-Neme& J.L.M. Leme, 1969 Brazil, Rio Grande63 mm
Pleurotomaria atomus (FOSSIL) Keyserling, 1854 †
Leptomaria austinensis (FOSSIL) Shumard, 1861 † Mexico, Coahuila, Francisco I. Madero
Pleurotomaria awakinoensis (FOSSIL) Begg & J. Grant-Mackie,2003 † New Zealand, Waikato, Waitomo
Leptomaria axmouthensis (FOSSIL) Cox † UK, Devon
Pleurotomaria bajociana (FOSSIL) Ferrari & Damborenea,2015 † Argentina
Neoplatyteichum barrealensis (FOSSIL) (Reed, 1927 †) Argentina, Chubut, Languiñeo
Bathrotomaria bedetteae (FOSSIL) M.G. Harasewych& S. Kiel, 2007 † Madagascar, Toliary, Atsimo-Andrefana
Mikadotrochus beyrichii (F.M. Hilgendorf, 1877) Japan, Kii67,7 mm