Entemnotrochus adansonianus (J.C.H. Crosse& P.H. Fischer, 1861)
Entemnotrochus adansonianus bermudensis T.A. Okutani & Y. Goto,1983
Bayerotrochus africanus (J.R. le B. Tomlin, 1948)
Pleurotomaria agarista (FOSSIL) Billings, 1865 †
Perotrochus allani (FOSSIL) J. Marwick, 1928 †
Perotrochus amabilis (F.M. Bayer, 1963)
Perotrochus amabilis coltrorum E. de C. Rios, 2003
Pleurotomaria amalthea (FOSSIL) Klipstein, 1843 †
Pleurotomaria amalthei (FOSSIL) F.A. von Quenstedt,1858 †
Pleurotomaria anglica (FOSSIL) (Sowerby, 1818 †)
Pleurotomaria angulosa (FOSSIL) d'Orbigny, 1842 †
Bathrotomaria annejoffeae (FOSSIL) M.G. Harasewych & S. Kiel,2007 †
Anodomaria anodosa (FOSSIL) J. Szabo, 1980 †
Perotrochus anseeuwi T. Kanazawa & Y. Goto,1991
Pleurotomaria anstedi (FOSSIL) Forbes †
Pleurotomaria antitorquata (FOSSIL) Münster, 1840 †
Murihikua aparima (FOSSIL) Begg & J. Grant-Mackie,2003 †
Pleurotomaria apicialis (FOSSIL) J.W. Hall, 1876 †
Sisenna apsara (FOSSIL) Delpey, 1941 †
Pleurotomaria aratula (FOSSIL) J.L.M. Defrance 1826 †
Pleurotomaria arctica (FOSSIL) F. Toula, 1875 †
Pleurotomaria arenaria (FOSSIL) Girty, 1909 †
Pleurotomaria armata (FOSSIL) Münster, 1844 †
Bathrotomaria ashburneri (FOSSIL) Cox †
Leptomaria asurai (FOSSIL) Das & al., 2005 †
Perotrochus atlanticus E. de C. Rios& H.R. Matthews, 1968
Perotrochus atlanticus notialis L. Penna-Neme & J.L.M. Leme,1969
Pleurotomaria atomus (FOSSIL) Keyserling, 1854 †
Leptomaria austinensis (FOSSIL) Shumard, 1861 †
Pleurotomaria awakinoensis (FOSSIL) Begg & J. Grant-Mackie,2003 †
Leptomaria axmouthensis (FOSSIL) Cox †
Pleurotomaria bajociana (FOSSIL) Ferrari & Damborenea,2015 †
Neoplatyteichum barrealensis (FOSSIL) (Reed, 1927 †)
Bathrotomaria bedetteae (FOSSIL) M.G. Harasewych & S. Kiel,2007 †
Mikadotrochus beyrichii (F.M. Hilgendorf, 1877)