| Nominal Species (n = 712) | Present allocation (n = 653) | Ref. |
|---|---|---|
| Odostomia aartseni Nofroni, 1988 | Odostomia aartseni | 3477 |
| Miralda abbotti Olsson & McGinty, 1958 | Ividia abbotti | 83435 |
| Turbonilla abreojensis Dall & Bartsch, 1909 | Turbonilla abreojensis | 19 |
| Turbonilla abrupta Bush, 1899 | Turbonilla abrupta | 83435 |
| Turbonilla acra Dall & Bartsch, 1909 | Turbonilla acra | 19 |
| Odostomia acrybia Dall & Bartsch, 1909 | Odostomia acrybia | 19 |
| Melania acus Pfeiffer, 1840 | Turbonilla acus | 83435 |
| Odostomia acuta Jeffreys, 1848 | Odostomia acuta | 3477 |
| Odostomia acutidens Dall, 1884 | Odostomia acutidens | 19 |
| Turbonilla acutissima Monterosato, 1884 | Turbonilla acutissima | 3477 |
| Turbonilla adusta Dall & Bartsch, 1909 | Turbonilla adusta | 19 |
| Odostomia aepynota Dall & Bartsch, 1909 | Odostomia aepynota | 19 |
| Turbonilla aepynota Dall & Bartsch, 1909 | Turbonilla aepynota | 19 |
| Turritella aequalis Say, 1826 | Turbonilla aequalis | 83435 |
| Odostomia aequisculpta Carpenter, 1864 | Odostomia aequisculpta | 19 |
| Liostomia afzelii Warén, 1991 | Liostomia afzelii | 3477 |
| Peristichia agria Dall, 1889 | Peristichia agria | 19 |
| Turbonilla alarconi Strong, 1949 | Turbonilla alarconi | 19 |
| Turbonilla alaskana Dall & Bartsch, 1909 | Turbonilla alaskana | 19 |
| Turbo albula Fabricius, 1780 | Menestho albula | 83435 |
| Odostomia aleutica Dall & Bartsch, 1909 | Odostomia aleutica | 19 |
| Turbonilla alfredi Abbott, 1958 | Turbonilla alfredi | 19 |
| Turbonilla almejasensis Bartsch, 1917 | Turbonilla almejasensis | 19 |
| Turbonilla almo Dall & Bartsch, 1909 | Turbonilla almo | 19 |
| Odostomia altina Dall & Bartsch, 1909 | Odostomia altina | 19 |
| Turbonilla ambusta Dall & Bartsch, 1909 | Turbonilla tridentata | 75097 |
| Odostomia amchitkana Dall & Bartsch, 1909 | Odostomia tenuisculpta | 75097 |
| Chemnitzia americana d'Orbigny, 1841 | Turbonilla americana | 83435 |
| Odostomia americana Dall & Bartsch, 1904 | Odostomia americana | 19 |
| Odostomia amiantus Dall & Bartsch, 1907 | Odostomia amiantus | 19 |
| Odostomia amilda Dall & Bartsch, 1909 | Odostomia amilda | 19 |
| Odostomia angularis Dall & Bartsch, 1907 | Odostomia angularis | 19 |
| Odostomia angusta Jeffreys, 1867 | Odostomia angusta | 3477 |
| Turbonilla anira Dall & Bartsch, 1927 | Turbonilla anira | 19 |
| Turbonilla antemunda Dall & Bartsch, 1909 | Turbonilla tenuicula | 75097 |
| Turbonilla antestriata Dall & Bartsch, 1907 | Turbonilla antestriata | 19 |
| Odostomia antilleana Treece, 1980 | Odostomia antilleana | 83435 |
| Turbonilla aquilonaria Absalao, Santos & Oliveira Tenório, 2003 | Turbonilla aquilonaria | 83435 |
| Oscilla aquilonia Pimenta, Santos & Absalao, 2008 | Oscilla aquilonia | 83435 |
| Turbonilla aracruzensis Pimenta & Absalao, 2004 | Turbonilla aracruzensis | 83435 |
| Turbonilla aragoni Dall & Bartsch, 1909 | Turbonilla aragoni | 19 |
| Odostomia arctica Dall & Bartsch, 1909 | Odostomia arctica | 19 |
| Turbonilla areolata Verrill, 1873 | Turbonilla interrupta | 75097 |
| Turbonilla aresta Dall & Bartsch, 1909 | Turbonilla aresta | 19 |
| Eulimella argentina Doello-Jurado, 1938 | Eulimella argentina | 83435 |
| Turbonilla aripana Strong, 1949 | Turbonilla aripana | 19 |
| Turbonilla arnoldoi Jong & Coomans, 1988 | Turbonilla arnoldoi | 83435 |
| Turbonilla asperula Bush, 1899 | Turbonilla asperula | 83435 |
| Turbonilla asser Dall & Bartsch, 1909 | Turbonilla stylina | 75097 |
| Turbonilla assimilans Smith, 1890 | Turbonilla assimilans | 83435 |
| Odostomia astricta Dall & Bartsch, 1907 | Odostomia astricta | 19 |
| Turbonilla asuncionis Strong, 1949 | Turbonilla asuncionis | 19 |
| Eulimella ataktos Warén, 1991 | Eulimella ataktos | 3477 |
| Odostomia atossa Dall, 1908 | Odostomia atossa | 19 |
| Odontostomia attenuata Dall, 1892 | Syrnola attenuata | 83435 |
| Turbonilla attrita Dall & Bartsch, 1909 | Turbonilla attrita | 19 |
| Turbonilla atypha Bush, 1899 | Turbonilla atypha | 83435 |
| Turbonilla auricoma Dall & Bartsch, 1903 | Turbonilla auricoma | 19 |
| Miralda austropacifica Oliver, 1915 | Miralda austropacifica | 337 |
| Odostomia avellana Carpenter, 1864 | Odostomia avellana | 19 |
| Turbonilla azteca Baker, Hanna, & Strong, 1928 | Turbonilla azteca | 19 |
| Chemnitzia babylonia Adams, 1845 | Pseudoscilla babylonia | 83435 |
| Odostomia bachia Bartsch, 1927 | Odostomia bachia | 19 |
| Turbonilla baegerti Bartsch, 1917 | Turbonilla baegerti | 19 |
| Eulimella bahiensis Castellanos, 1982 | Eulimella bahiensis | 83435 |
| Turbonilla bakeri Bartsch, 1912 | Turbonilla bakeri | 19 |
| Odostomia baldridgeae Bartsch, 1912 | Odostomia baldridgeae | 19 |
| Odostomia baranoffensis Dall & Bartsch, 1909 | Odostomia tenuisculpta | 75097 |
| Odostomia barashi Bogi & Galil, 2000 | Odostomia barashi | 3477 |
| Odostomia barkleyensis Dall & Bartsch, 1910 | Odostomia barkleyensis | 19 |
| Turbonilla barkleyensis Bartsch, 1917 | Turbonilla barkleyensis | 19 |
| Turbonilla bartolomensis Bartsch, 1917 | Turbonilla bartolomensis | 19 |
| Odostomia bartschi Winkley, 1909 | Fargoa bartschi | 75097 |
| Pyramidella bartschi Winkley, 1909 | Fargoa bartschi | 83435 |
| Turbonilla basicordata Nomura, 1936 | Turbonilla basicordata | 3477 |
| Menestho beaglensis Luca, Güller & Zelaya, 2021 | Menestho beaglensis | 3477 |
| Odostomia bedequensis Bartsch, 1909 | Odostomia trifida | 75097 |
| Menestho beermanae Jong & Coomans, 1988 | Menestho beermanae | 83435 |
| Turbonilla belotheca Dall, 1889 | Turbonilla belotheca | 19 |
| Odostomia beringi Dall, 1871 | Odostomia beringi | 19 |
| Turbonilla bermudense Dall & Bartsch, 1911 | Bacteridium bermudense | 83435 |
| Turbonilla berryi Dall & Bartsch, 1907 | Turbonilla chocolata | 75097 |
| Odostomia bisuturalis Say, 1822 | Boonea bisuturalis | 75097 |
| Turritella bisuturalis Say, 1822 | Boonea bisuturalis | 83435 |
| Chrysallida bjoernsoni Warén, 1991 | Chrysallida bjoernsoni | 83435 |
| Eulimella bogii van Aartsen, 1995 | Eulimella bogii | 3477 |
| Turbonilla brachia Smith, 1890 | Turbonilla brachia | 83435 |
| Turbonilla brasiliensis Clessin, 1902 | Turbonilla brasiliensis | 83435 |
| Chrysallida brattstroemi Warén, 1991 | Chrysallida brattstroemi | 3477 |
| Menestho bruneri Verrill, 1882 | Odostomia bruneri | 83435 |
| Odostomia bruneri Verrill, 1882 | Odostomia bruneri | 19 |
| Odostomia bulimulus Monterosato, 1874 | Odostomia bulimulus | 3477 |
| Turbonilla burchi Gordon, 1938 | Turbonilla burchi | 19 |
| Odostomia bushiana Bartsch, 1909 | Fargoa bushiana | 75097 |
| Turbonilla bushiana Verrill, 1882 | Turbonilla bushiana | 19 |
| Turbonilla buteonis Bartsch, 1909 | Turbonilla buteonis | 19 |
| Turbonilla buttoni Dall & Bartsch, 1909 | Turbonilla buttoni | 19 |
| Turbonilla cabrilloi Bartsch, 1917 | Turbonilla cabrilloi | 19 |
| Odostomia calcarella Bartsch, 1912 | Odostomia calcarella | 19 |
| Cyclostremella californica Bartsch, 1907 | Cyclostremella californica | 19 |
| Odostomia californica Dall & Bartsch, 1909 | Odostomia gravida | 75097 |
| Odostomia callimene Bartsch, 1912 | Odostomia callimene | 19 |
| Turbonilla callimene Bartsch, 1912 | Turbonilla callimene | 19 |
| Odostomia callimorpha Dall & Bartsch, 1909 | Odostomia callimorpha | 19 |
| Odostomia calliope Bartsch, 1912 | Odostomia calliope | 19 |
| Turbonilla calvini Dall & Bartsch, 1909 | Turbonilla stylina | 75097 |
| Pyramidella camara Bartsch, 1927 | Pyramidella camara | 83435 |
| Turbonilla canadensis Bartsch, 1917 | Turbonilla canadensis | 19 |
| Odostomia canaliculata Adams, 1850 | Odostomia canaliculata | 19 |
| Chemnitzia cancellata d'Orbigny, 1841 | Chrysallida cancellata | 83435 |
| Amaura candida Möller, 1842 | Aartsenia candida | 83435 |
| Pyramidella candida Morch, 1875 | Pyramidella candida | 19 |
| Obeliscus candidus Mörch, 1875 | Longchaeus candidus | 83435 |
| Odostomia canfieldi Dall, 1908 | Odostomia canfieldi | 19 |
| Turbonilla canfieldi Dall & Bartsch, 1907 | Turbonilla canfieldi | 19 |
| Odostomia capitana Dall & Bartsch, 1909 | Odostomia capitana | 19 |
| Turbonilla capixaba Pimenta & Absalao, 2004 | Turbonilla capixaba | 83435 |
| Odostomella carceralis Pimenta, Absalao & Alencar, 2000 | Odostomella carceralis | 83435 |
| Turbonilla caroliniana Holmes, 1859 | Turbonilla caroliniana | 3446 |
| Turbonilla carpenteri Dall & Bartsch, 1909 | Turbonilla carpenteri | 19 |
| Odostomia carrozzai van Aartsen, 1987 | Odostomia carrozzai | 3477 |
| Turbonilla cascoensis Bartsch, 1909 | Turbonilla interrupta | 75097 |
| Odostomia cassandra Bartsch, 1912 | Odostomia cassandra | 19 |
| Turbonilla castanella Dall, 1908 | Turbonilla castanella | 19 |
| Odostomia catalinensis Bartsch, 1927 | Odostomia catalinensis | 19 |
| Turbonilla catalinensis Dall & Bartsch, 1909 | Turbonilla tridentata | 75097 |
| Turbonilla cayucosensis Willett, 1929 | Turbonilla gabbiana | 75097 |
| Parthenia cedrosa Dall, 1884 | Kleinella cedrosa | 83435 |
| Turbonilla centrota Dall & Bartsch, 1909 | Turbonilla centrota | 19 |
| Turbonilla ceralva Dall & Bartsch, 1909 | Turbonilla ceralva | 19 |
| Turbonilla chalcana Baker, Hanna, & Strong, 1928 | Turbonilla chalcana | 19 |
| Sayella chesapeakea Morrison, 1939 | Sayella chesapeakea | 19 |
| Odostomia chinooki Bartsch, 1927 | Odostomia chinooki | 19 |
| Odostomia churchi Smith & Gordon, 1948 | Odostomia churchi | 19 |
| Odostomia clara Brazier, 1877 | Odostomia clara | 3204 |
| Turbonilla clarinda Bartsch, 1912 | Turbonilla clarinda | 19 |
| Monoptygma clathratula Mörch, 1875 | Careliopsis clathratula | 83435 |
| Odostomia clementensis Bartsch, 1927 | Odostomia clementensis | 19 |
| Odostomia clementina Dall & Bartsch, 1909 | Odostomia clementina | 19 |
| Turbonilla clementina Bartsch, 1927 | Turbonilla clementina | 19 |
| Odostomia clesseni Dall & Bartsch, 1909 | Odostomia tenuisculpta | 75097 |
| Odostomia clessini Dall & Bartsch, 1909 | Odostomia clessini | 19 |
| Turbonilla cochimana Strong, 1949 | Turbonilla cochimana | 19 |
| Odostomia columbiana Dall & Bartsch, 1907 | Odostomia columbiana | 19 |
| Odostomia compactilis Jeffreys, 1867 | Eulimella compactilis | 83435 |
| Turbonilla compsa Bush, 1899 | Turbonilla compsa | 83435 |
| Cyclostremella concordia Bartsch, 1920 | Cyclostremella concordia | 19 |
| Brachystomia conica Luca, Güller & Zelaya, 2021 | Brachystomia conica | 3477 |
| Turbonilla conoma Bartsch, 1927 | Turbonilla conoma | 19 |
| Turbonilla conradi Bush, 1899 | Turbonilla conradi | 19 |
| Odostomia conspicua Alder, 1850 | Odostomia conspicua | 3477 |
| Chemnitzia constricta Folin, 1870 | Turbonilla constricta | 83435 |
| Odostomia contrerasi Baker, Hanna, & Strong, 1928 | Odostomia contrerasi | 19 |
| Odostomia cookeana Bartsch, 1910 | Odostomia cookeana | 19 |
| Turbonilla coomansi Van Aartsen, 1994 | Turbonilla coomansi | 19 |
| Odostomia cooperi Dall & Bartsch, 1909 | Odostomia astricta | 75097 |
| Odostomia cornadoensis Dall & Bartsch, 1909 | Odostomia dinella | 75097 |
| Turbonilla corsoensis Bartsch, 1917 | Turbonilla corsoensis | 19 |
| Turbonilla cortezi Bartsch, 1917 | Turbonilla cortezi | 19 |
| Eulimella cossignaniorum van Aartsen, 1995 | Eulimella cossignaniorum | 3477 |
| Besla cossmanni Hornung & Mermod, 1924 | Besla cossmanni | 19 |
| Turbonilla coyotensis Baker, Hanna, & Strong, 1928 | Turbonilla coyotensis | 19 |
| Turbonilla crebrifilata Carpenter, 1864 | Turbonilla tenuicula | 75097 |
| Melampus crosseana Dall, 1885 | Petitilla crosseana | 83435 |
| Megastomia crovatoi Nofroni, Renda & Vannozzi, 2022 | Megastomia crovatoi | 3477 |
| Ondina crystallina Locard, 1892 | Ondina crystallina | 3477 |
| Pluscula cuica Marcus, 1953 | Pluscula cuica | 83435 |
| Odostomia cumshewaensis Bartsch, 1921 | Odostomia cumshewaensis | 19 |
| Turbonilla curta Dall, 1889 | Turbonilla curta | 19 |
| Turbonilla cynthiae Jong & Coomans, 1988 | Turbonilla cynthiae | 83435 |
| Odostomia cypria Dall & Bartsch, 1912 | Odostomia cypria | 19 |
| Turbonilla dalli Bush, 1899 | Turbonilla dalli | 19 |
| Chrysallida dantarti Peñas & Rolán, 2008 | Chrysallida dantarti | 3477 |
| Chemnitzia dealbata Stimpson, 1851 | Odostomia dealbata | 83435 |
| Turbonilla deboeri Jong & Coomans, 1988 | Turbonilla deboeri | 83435 |
| Turbonilla delicata Monterosato, 1874 | Turbonilla delicata | 3477 |
| Odostomia delicatula Carpenter, 1864 | Odostomia delicatula | 19 |
| Odostomia deliciosa Dall & Bartsch, 1907 | Odostomia deliciosa | 19 |
| Turbonilla delmontana Bartsch, 1937 | Turbonilla delmontana | 19 |
| Chemnitzia densecostata Philippi, 1844 | Turbonilla densecostata | 83435 |
| Turbonilla deseadensis Luca, Güller & Zelaya, 2021 | Turbonilla deseadensis | 3477 |
| Odostomia dianthophila Wells & Wells, 1961 | Fargoa dianthophila | 75097 |
| Odostomia dicella Bartsch, 1912 | Odostomia dicella | 19 |
| Odostomia didymum Verrill & Bush, 1900 | Eulimastoma didymum | 83435 |
| Turbonilla diegensis Dall & Bartsch, 1909 | Turbonilla diegensis | 19 |
| Odostomia dinella Dall & Bartsch, 1909 | Odostomia dinella | 19 |
| Turbonilla dinora Bartsch, 1912 | Turbonilla dinora | 19 |
| Turbonilla dispar Pilsbry, 1897 | Turbonilla dispar | 83435 |
| Odostomia disparilis Verrill, 1884 | Odostomia disparilis | 19 |
| Trochus dolabrata Linnaeus, 1758 | Pyramidella dolabrata | 83435 |
| Rissoa doliolum Philippi, 1844 | Odostomella doliolum | 83435 |
| Turbonilla domingana Hertlein & Strong, 1951 | Turbonilla domingana | 19 |
| Odostomia donilla Dall & Bartsch, 1909 | Odostomia gravida | 75097 |
| Turbonilla dora Bartsch, 1917 | Turbonilla dora | 19 |
| Turbonilla dracona Bartsch, 1912 | Turbonilla dracona | 19 |
| Hinemoa duplex Laseron, 1959 | Oscilla duplex | 3477 |
| Odostomia dux Dall & Bartsch, 1906 | Odostomia dux | 19 |
| Rissoa eburnea Stimpson, 1851 | Liostomia eburnea | 83435 |
| Pyrgulina edgarii Melvill, 1897 | Turbonilla edgarii | 19 |
| Odostomia edmondi Jordan, 1920 | Odostomia edmondi | 19 |
| Turbonilla edwardensis Bartsch, 1909 | Turbonilla edwardensis | 19 |
| Egila ektopa Pimenta & Absalao, 2004 | Egila ektopa | 83435 |
| Odostomia eldorana Bartsch, 1912 | Odostomia eldorana | 19 |
| Turbonilla electra Bartsch, 1927 | Turbonilla electra | 19 |
| Chemnitzia elegans d'Orbigny, 1841 | Turbonilla elegans | 83435 |
| Turbonilla elegantula Verrill, 1882 | Turbonilla elegantula | 19 |
| Odostomia elsa Dall & Bartsch, 1909 | Odostomia elsa | 19 |
| Turbonilla emertoni Verrill, 1882 | Turbonilla emertoni | 19 |
| Odostomia emeryi Bartsch, 1955 | Odostomia emeryi | 83435 |
| Turbonilla encella Bartsch, 1912 | Turbonilla encella | 19 |
| Odostomia engbergi Bartsch, 1920 | Odostomia engbergi | 19 |
| Turbonilla engbergi Bartsch, 1920 | Turbonilla engbergi | 19 |
| Odostomia engonia Bush, 1885 | Odostomia engonia | 19 |
| Odostomia engonium Bush, 1885 | Eulimastoma engonium | 83435 |
| Turbonilla enna Bartsch, 1927 | Turbonilla enna | 19 |
| Odostomia enora Dall & Bartsch, 1909 | Odostomia enora | 19 |
| Pyrgulina epentroma Melvill, 1897 | Pyrgulina epentroma | 19 |
| Turbonilla eritima Smith, 1890 | Turbonilla eritima | 83435 |
| Odostomia erjaveciana Brusina, 1869 | Odostomia erjaveciana | 3477 |
| Chemnitzia erythrosclera Mörch, 1875 | Turbonilla erythrosclera | 83435 |
| Turbonilla eschscholtzi Dall & Bartsch, 1907 | Turbonilla eschscholtzi | 19 |
| Odostomia esilda Dall & Bartsch, 1909 | Odostomia esilda | 19 |
| Odostomia eucosmia Dall & Bartsch, 1909 | Odostomia eucosmia | 19 |
| Turbonilla eucosmobasis Dall & Bartsch, 1907 | Turbonilla eucosmobasis | 19 |
| Odostomia eugena Dall & Bartsch, 1909 | Odostomia eugena | 19 |
| Odostomia euglypta Jordan, 1920 | Odostomia euglypta | 19 |
| Odostomia eulimoides Hanley, 1844 | Odostomia eulimoides | 3477 |
| Turbonilla eva Bartsch, 1917 | Turbonilla eva | 19 |
| Ganitus evelinae Marcus, 1953 | Ganitus evelinae | 83435 |
| Cingulina evermanni Baker, Hanna, & Strong, 1928 | Cingulina evermanni | 19 |
| Odostomia exara Dall & Bartsch, 1907 | Odostomia exara | 19 |
| Odostomia excisa Bartsch, 1912 | Odostomia excisa | 19 |
| Odostomia excolpa Bartsch, 1912 | Odostomia excolpa | 19 |
| Chemnitzia exilis Adams, 1850 | Turbonilla exilis | 83435 |
| Odostomia eyerdami Bartsch, 1927 | Odostomia eyerdami | 19 |
| Turbonilla eyerdami Bartsch, 1927 | Turbonilla eyerdami | 19 |
| Turbonilla fackenthallae Smith & Gordon, 1948 | Turbonilla fackenthallae | 19 |
| Dunkeria falcifera Watson, 1881 | Tragula falcifera | 83435 |
| Odostomia farallonensis Dall & Bartsch, 1909 | Odostomia farallonensis | 19 |
| Odostomia farella Dall & Bartsch, 1909 | Odostomia dinella | 75097 |
| Turbonilla farinatiae Pimenta & Absalao, 2004 | Turbonilla farinatiae | 83435 |
| Odostomia farma Dall & Bartsch, 1909 | Odostomia farma | 19 |
| Turbonilla farroupilha Pimenta & Absalao, 2004 | Turbonilla farroupilha | 83435 |
| Chemnitzia fasciata d'Orbigny, 1841 | Turbonilla fasciata | 83435 |
| Syrnola fasciata Jickeli, 1882 | Syrnola fasciata | 3477 |
| Odostomia fernandina Bartsch, 1927 | Evalea fernandina | 83435 |
| Pyramidella fernandina Bartsch, 1927 | Syrnola fernandina | 83435 |
| Odostomia fetella Dall & Bartsch, 1909 | Odostomia fetella | 19 |
| Odostomia fia Bartsch, 1927 | Odostomia fia | 19 |
| Turbonilla finlayi Powell, 1926 | Turbonilla finlayi | 3477 |
| Helodiamea firma Peñas, Rolán & Sabelli, 2020 | Helodiamea firma | 3477 |
| Pyramidella floridana Bartsch, 1927 | Syrnola floridana | 83435 |
| Turbonilla fluminensis Pimenta & Absalao, 2004 | Turbonilla fluminensis | 83435 |
| Pyramidella folinii Dall, 1889 | Pyramidella folinii | 83435 |
| Odostomella fonteini Jong & Coomans, 1988 | Odostomella fonteini | 83435 |
| Turbonilla fonteini Jong & Coomans, 1988 | Odostomella fonteini | 83435 |
| Odostomia franciscana Bartsch, 1917 | Odostomia franciscana | 19 |
| Turbonilla franciscana Bartsch, 1917 | Turbonilla franciscana | 19 |
| Corbula fulva Adams, 1852 | Corbula fulva | 83435 |
| Pyramis fusca Adams, 1839 | Sayella fusca | 83435 |
| Turbonilla fustis Odé, 1995 | Turbonilla fustis | 83435 |
| Odostomia fusulus Monterosato, 1878 | Odostomia fusulus | 3477 |
| Turbonilla galianoi Dall & Bartsch, 1909 | Turbonilla stylina | 75097 |
| Fargoa gaudens Odé, 1993 | Fargoa gaudens | 83435 |
| Odostomia gemmulosa Adams, 1850 | Chrysallida gemmulosa | 83435 |
| Liostomia georgiana Pfeffer, 1886 | Liostomia georgiana | 83435 |
| Pyramidella georgiana Bartsch, 1927 | Syrnola georgiana | 83435 |
| Odostomia gibbosa Bush, 1909 | Fargoa gibbosa | 3125 |
| Turbonilla gilli Dall & Bartsch, 1907 | Turbonilla gilli | 19 |
| Odostomia glaphyra Smith, 1890 | Odostomia glaphyra | 83435 |
| Odostomia gloriosa Bartsch, 1912 | Odostomia gloriosa | 19 |
| Turbonilla gloriosa Bartsch, 1912 | Turbonilla gloriosa | 19 |
| Turbonilla gonzagensis Baker, Hanna, & Strong, 1928 | Turbonilla gonzagensis | 19 |
| Odostomia gouldii Carpenter, 1864 | Odostomia gouldii | 19 |
| Turbonilla goytacazi Pimenta & Absalao, 2004 | Turbonilla goytacazi | 83435 |
| Epigrus gracilis Oliver, 1915 | Rissopsetia gracilis | 3477 |
| Morrisonietta gracilis Brandt, 1968 | Morrisonietta gracilis | 3477 |
| Turbonilla gradata Bucquoy, Dautzenberg & Dollfus, 1883 | Turbonilla gradata | 3477 |
| Rissoa gradatula Mörch, 1876 | Mumiola gradatula | 83435 |
| Odostomia granatina Dall, 1883 | Boonea seminuda | 75097 |
| Turbonilla grandis Verrill, 1885 | Turbonilla grandis | 19 |
| Odostomia gravida Gould, 1853 | Odostomia gravida | 19 |
| Odostomia grijalvae Baker, Hanna, & Strong, 1928 | Odostomia grijalvae | 19 |
| Turbonilla grippi Bartsch, 1912 | Turbonilla grippi | 19 |
| Odostomia grippiana Bartsch, 1912 | Odostomia grippiana | 19 |
| Turbonilla guaicurana Strong, 1949 | Turbonilla guaicurana | 19 |
| Odostomia gulicki Pilsbry, 1918 | Odostomia gulicki | 3477 |
| Odostomia hagemeisteri Dall & Bartsch, 1909 | Odostomia hagemeisteri | 19 |
| Turbonilla halia Dall & Bartsch, 1909 | Turbonilla chocolata | 75097 |
| Turbonilla halibrecta Dall & Bartsch, 1909 | Turbonilla halibrecta | 19 |
| Turbonilla halidoma Dall & Bartsch, 1909 | Turbonilla halidoma | 19 |
| Turbonilla halistrepta Dall & Bartsch, 1909 | Turbonilla halistrepta | 19 |
| Turbonilla hamata Nordsieck, 1972 | Turbonilla hamata | 3477 |
| Liostomia hansgei Warén, 1991 | Liostomia hansgei | 3477 |
| Eulimastoma harbisonae Bartsch, 1955 | Eulimastoma harbisonae | 83435 |
| Odostomia harfordensis Dall & Bartsch, 1907 | Odostomia harfordensis | 19 |
| Turbonilla haroldi Smith, 1890 | Turbonilla haroldi | 83435 |
| Odostomia havanensis Pilsbry & Aguayo, 1933 | Odostomia havanensis | 19 |
| Turbonilla haycocki Dall & Bartsch, 1911 | Turbonilla haycocki | 19 |
| Odostomia heathi Smith & Gordon, 1948 | Odostomia heathi | 19 |
| Turbonilla hecuba Dall & Bartsch, 1913 | Turbonilla hecuba | 19 |
| Turbonilla heilprini Bush, 1899 | Turbonilla heilprini | 83435 |
| Odostomia helena Bartsch, 1912 | Odostomia helena | 19 |
| Odostomia helga Dall & Bartsch, 1909 | Odostomia helga | 19 |
| Odostomia hemphilli Dall & Bartsch, 1909 | Odostomia hemphilli | 19 |
| Turbonilla hemphilli Bush, 1899 | Turbonilla hemphilli | 19 |
| Leuconia hemphillii Dall, 1884 | Sayella hemphillii | 83435 |
| Odostomia hendersoni Bartsch, 1909 | Odostomia hendersoni | 19 |
| Odostomia herilda Dall & Bartsch, 1909 | Odostomia herilda | 19 |
| Turbonilla hespera Bartsch, 1927 | Turbonilla hespera | 19 |
| Odostomia heterocincta Bartsch, 1912 | Odostomia heterocincta | 19 |
| Turbonilla heterolopha Dall & Bartsch, 1909 | Turbonilla heterolopha | 19 |
| Brachystomia hispanica Nofroni, Renda & Vannozzi, 2022 | Brachystomia hispanica | 3477 |
| Turbonilla histias Dall & Bartsch, 1909 | Turbonilla histias | 19 |
| Chrysallida hoeisaeteri Warén, 1991 | Chrysallida hoeisaeteri | 83435 |
| Turbonilla humerosa Dall & Bartsch, 1909 | Turbonilla stylina | 75097 |
| Cyclostremella humilis Bush, 1897 | Cyclostremella humilis | 19 |
| Rissopsetia hummelincki Faber, 1984 | Rissopsetia hummelincki | 19 |
| Odostomia hypatia Dall & Bartsch, 1912 | Odostomia hypatia | 19 |
| Odostomia hypocurta Dall & Bartsch, 1909 | Odostomia hypocurta | 19 |
| Turbonilla hypolispa Dall & Bartsch, 1909 | Turbonilla hypolispa | 19 |
| Turbonilla icela Melvill, 1910 | Turbonilla icela | 3477 |
| Turbonilla idothea Bartsch, 1927 | Turbonilla idothea | 83435 |
| Turbonilla iheringi Clessin, 1900 | Turbonilla iheringi | 83435 |
| Turbonilla ilfa Bartsch, 1927 | Turbonilla ilfa | 19 |
| Odostomia iliuliukensis Dall & Bartsch, 1909 | Odostomia iliuliukensis | 19 |
| Odostomia impressa Say, 1822 | Boonea impressa | 75097 |
| Turritella impressa Say, 1822 | Boonea impressa | 83435 |
| Odostomia improbabilis Oberling, 1970 | Odostomia improbabilis | 3477 |
| Turbonilla ina Bartsch, 1917 | Turbonilla ina | 19 |
| Turbonilla incisa Bush, 1899 | Turbonilla incisa | 19 |
| Chemnitzia indianola Melvill, 1881 | Turbonilla indianola | 83435 |
| Raoulostraca inexpectata Oliver, 1915 | Raoulostraca inexpectata | 3477 |
| Odostomia inflata Carpenter, 1864 | Odostomia inflata | 19 |
| Odostomia insculpta De Kay, 1847 | Odostomia trifida | 75097 |
| Pyrgulina insularis Oliver, 1915 | Besla insularis | 3204 |
| Turbonilla insularis Dall & Simpson, 1901 | Turbonilla insularis | 19 |
| Turritella interrupta Totten, 1835 | Turbonilla interrupta | 83435 |
| Odostomia io Dall & Bartsch, 1903 | Odostomia gravida | 75097 |
| Turbonilla iolausi Bartsch, 1955 | Turbonilla iolausi | 83435 |
| Herviera isidella Melvill & Standen, 1899 | Tropaeas livida | 3204 |
| Rissopsetia islandica Warén, 1989 | Rissopsetia islandica | 83435 |
| Odostomia jadisi Olsson & McGinty, 1958 | Boonea jadisi | 19 |
| Miralda jamaicensis Clessin, 1900 | Odostomia jamaicensis | 83435 |
| Odostomia jewetti Dall & Bartsch, 1907 | Odostomia tenuisculpta | 75097 |
| Turbonilla jewetti Dall & Bartsch, 1909 | Turbonilla jewetti | 19 |
| Oscilla jocosa Melvill, 1904 | Oscilla jocosa | 3477 |
| Turbonilla johnsoni Baker, Hanna, & Strong, 1928 | Turbonilla johnsoni | 19 |
| Odostomia jonesii Verrill & Bush, 1900 | Odostomia jonesii | 83435 |
| Turbonilla juani Bartsch, 1917 | Turbonilla juani | 19 |
| Turbonilla kaapor Pimenta & Absalao, 2004 | Turbonilla kaapor | 83435 |
| Odostomia kadiahkensis Dall & Bartsch, 1909 | Odostomia tenuisculpta | 75097 |
| Odostomia kadiakensis Dall & Bartsch, 1909 | Odostomia kadiakensis | 19 |
| Turbonilla kaliwana Strong, 1949 | Turbonilla kaliwana | 19 |
| Turbonilla kamayura Absalao, Santos & Oliveira Tenório, 2003 | Turbonilla kamayura | 83435 |
| Turbonilla keepi Dall & Bartsch, 1909 | Turbonilla chocolata | 75097 |
| Odostomia kelseyi Bartsch, 1912 | Odostomia kelseyi | 19 |
| Turbonilla kelseyi Dall & Bartsch, 1909 | Turbonilla kelseyi | 19 |
| Odostomia kennerleyi Dall & Bartsch, 1907 | Odostomia kennerleyi | 19 |
| Odostomia killisnooensis Dall & Bartsch, 1909 | Odostomia killisnooensis | 19 |
| Turbonilla kincaidi Bartsch, 1921 | Turbonilla kincaidi | 19 |
| Odostomia krausei Clessin, 1900 | Odostomia krausei | 19 |
| Odostomia kromi van Aartsen, Menkhorst & Gittenberger, 1984 | Odostomia kromi | 3477 |
| Trabecula krumpermani Jong & Coomans, 1988 | Trabecula krumpermani | 83435 |
| Turbonilla krumpermani Jong & Coomans, 1988 | Trabecula krumpermani | 83435 |
| Morrisonietta krungtepensis Brandt, 1968 | Morrisonietta krungtepensis | 3477 |
| Odostomia kymatoessa Watson, 1886 | Turbonilla kymatoessa | 83435 |
| Chemnitzia laevigata d'Orbigny, 1841 | Odostomia laevigata | 83435 |
| Turbonilla lamna Bartsch, 1917 | Turbonilla lamna | 19 |
| Turbonilla lara Dall & Bartsch, 1909 | Turbonilla lara | 19 |
| Turbonilla larunda Dall & Bartsch, 1909 | Turbonilla larunda | 19 |
| Odostomia lastra Dall & Bartsch, 1909 | Odostomia lastra | 19 |
| Odostomia laxa Dall & Bartsch, 1909 | Odostomia laxa | 19 |
| Turbonilla lazaroensis Bartsch, 1917 | Turbonilla lazaroensis | 19 |
| Peristichia lepta Pimenta, Santos & Absalao, 2008 | Peristichia lepta | 83435 |
| Turbonilla lepta Pimenta & Absalao, 2004 | Turbonilla lepta | 83435 |
| Turbonilla leta Bartsch, 1927 | Turbonilla leta | 19 |
| Turbonilla leuca Bush, 1899 | Turbonilla leuca | 83435 |
| Chemnitzia levis Adams, 1850 | Turbonilla levis | 83435 |
| Turbonilla lillybeckae Usticke, 1969 | Turbonilla lillybeckae | 83435 |
| Turbonilla linjaica Melvill & Standen, 1901 | Turbonilla linjaica | 3477 |
| Eulimella lissa Verrill, 1884 | Eulimella lissa | 83435 |
| Triptychus litosbathron Pimenta, Santos & Absalao, 2008 | Triptychus litosbathron | 83435 |
| Turbonilla lituyana Dall & Bartsch, 1909 | Turbonilla lituyana | 19 |
| Sayella livida Rehder, 1935 | Sayella livida | 19 |
| Odostomia lorellae Micali, 1987 | Odostomia lorellae | 3477 |
| Turbonilla louiseae Clarke, 1954 | Turbonilla louiseae | 19 |
| Turbonilla lowei Dall & Bartsch, 1903 | Turbonilla chocolata | 75097 |
| Odostomia lubrica Verrill & Bush, 1900 | Odostomia lubrica | 83435 |
| Turbonilla lucana Dall & Bartsch, 1909 | Turbonilla lucana | 19 |
| Odostomia lucca Dall & Bartsch, 1909 | Odostomia astricta | 75097 |
| Turbonilla lucida Folin, 1872 | Turbonilla lucida | 83435 |
| Odostomia lukisii Jeffreys, 1859 | Odostomia lukisii | 3477 |
| Odetta luscens Folin, 1872 | Odetta luscens | 83435 |
| Turbonilla lyalli Dall & Bartsch, 1907 | Turbonilla lyalli | 19 |
| Turbonilla macaensis Pimenta & Absalao, 2001 | Turbonilla macaensis | 83435 |
| Turbonilla macbridei Dall & Bartsch, 1909 | Turbonilla macbridei | 19 |
| Turbonilla macouni Dall & Bartsch, 1910 | Turbonilla macouni | 19 |
| Turbonilla macra Dall & Bartsch, 1909 | Turbonilla tenuicula | 75097 |
| Turbonilla madrinensis Lamy, 1905 | Turbonilla madrinensis | 83435 |
| Babella maestratii Peñas, Rolán & Sabelli, 2020 | Babella maestratii | 3477 |
| Turbonilla maestratii Pimenta & Absalao, 2004 | Turbonilla maestratii | 83435 |
| Turbonilla magdalinensis Bartsch, 1927 | Turbonilla magdalinensis | 19 |
| Pyrgulina maiae Hornung & Mermod, 1924 | Chrysallida maiae | 19 |
| Liostomia mamoi Mifsud, 1993 | Liostomia mamoi | 3477 |
| Turbonilla mariana Bartsch, 1917 | Turbonilla mariana | 19 |
| Turbonilla marshalli Dall & Bartsch, 1909 | Turbonilla marshalli | 19 |
| Odostomia martensi Dall & Bartsch, 1906 | Odostomia martensi | 19 |
| Turbonilla mayana Baker, Hanna, & Strong, 1928 | Turbonilla mayana | 19 |
| Pyramidella mazatlantica Dall & Bartsch, 1909 | Pyramidella mazatlantica | 19 |
| Chrysallida medialuna Faber, 2008 | Chrysallida medialuna | 83435 |
| Turbonilla megascymna Absalao, Santos & Oliveira Tenório, 2003 | Turbonilla megascymna | 83435 |
| Turbonilla melea Bartsch, 1927 | Turbonilla melea | 19 |
| Pyrgulina melvilli Dautz. et Fischer, 1906 | Pyrgulina melvilli | 19 |
| Odostomia mendozae Baker, Hanna, & Strong, 1928 | Odostomia mendozae | 19 |
| Turbonilla mermeroglaphyra Absalao, Santos & Oliveira Tenório, 2003 | Turbonilla mermeroglaphyra | 83435 |
| Odostomella metata Hedley, 1907 | Odostomella metata | 3204 |
| Odostomia metata Hedley, 1907 | Odostomella metata | 3204 |
| Pyramidella mexicana Dall & Bartsch, 1909 | Pyramidella mexicana | 19 |
| Chrysallida micronana Ozturk & van Aartsen, 2006 | Chrysallida micronana | 3477 |
| Babella micronodulosa Peñas, Rolán & Sabelli, 2020 | Babella micronodulosa | 3477 |
| Turbonilla midas Pimenta & Absalao, 2004 | Turbonilla midas | 83435 |
| Turbonilla middendorffi Bartsch, 1927 | Turbonilla middendorffi | 19 |
| Turbonilla mighelsi Bartsch, 1909 | Turbonilla mighelsi | 19 |
| Leucotina minuta Smith, 1890 | Leucotina minuta | 83435 |
| Syrnola minuta Adams, 1869 | Syrnola minuta | 3477 |
| Turbonilla miona Bartsch, 1927 | Turbonilla miona | 19 |
| Turbonilla mirifica Pallary, 1904 | Turbonilla mirifica | 3477 |
| Chemnitzia modesta d'Orbigny, 1841 | Turbonilla modesta | 83435 |
| Odostomia modesta Stimpson, 1851 | Odostomia modesta | 19 |
| Odostomia montereyensis Dall & Bartsch, 1907 | Odostomia astricta | 75097 |
| Chrysallida moolenbeeki Amati, 1987 | Chrysallida moolenbeeki | 3477 |
| Odostomia moratora Dall & Bartsch, 1909 | Odostomia moratora | 19 |
| Turbonilla morchi Dall & Bartsch, 1907 | Turbonilla morchi | 19 |
| Moerchia morleti Fischer, 1877 | Moerchia morleti | 3477 |
| Odostomia morseana Bartsch, 1909 | Odostomia sulcosa | 75097 |
| Odostomia movilla Dall & Bartsch, 1909 | Odostomia movilla | 19 |
| Odostomia muelleri Clessin, 1900 | Odostomia muelleri | 83435 |
| Chemnitzia multicostata Adams, 1850 | Turbonilla multicostata | 83435 |
| Odostomia multituberculata Castellanos, 1982 | Chrysallida multituberculata | 83435 |
| Turbonilla muricatoides Dall & Bartsch, 1907 | Turbonilla muricatoides | 19 |
| Turbonilla myia Bartsch, 1927 | Turbonilla myia | 19 |
| Turbonilla nahuana Baker, Hanna, & Strong, 1928 | Turbonilla nahuana | 19 |
| Odostomia navarettei Baker, Hanna, & Strong, 1928 | Odostomia navarettei | 19 |
| Odostomia navisa Dall & Bartsch, 1907 | Odostomia navisa | 19 |
| Turbonilla nemea Bartsch, 1927 | Turbonilla nemea | 83435 |
| Odostomia nemo Dall & Bartsch, 1909 | Odostomia nemo | 19 |
| Turbonilla nereia Dall & Bartsch, 1909 | Turbonilla nereia | 19 |
| Turbonilla nesiotes Pimenta & Absalao, 1998 | Turbonilla nesiotes | 83435 |
| Turbonilla newcombei Dall & Bartsch, 1907 | Turbonilla newcombei | 19 |
| Turbonilla nicholsi Dall & Bartsch, 1909 | Turbonilla stylina | 75097 |
| Babella nimiaprocostae Peñas, Rolán & Sabelli, 2020 | Babella nimiaprocostae | 3477 |
| Odostomia nioba Dall & Bartsch, 1911 | Chrysallida nioba | 83435 |
| Odostomia nitens Jeffreys, 1870 | Odostomia nitens | 3477 |
| Syrnola nitidula Adams, 1860 | Syrnola nitidula | 83435 |
| Chemnitzia nivea Stimpson, 1851 | Turbonilla nivea | 83435 |
| Obeliscus niveus Mörch, 1875 | Triptychus niveus | 83435 |
| Triptychus niveus Morch, 1875 | Triptychus niveus | 19 |
| Odostomia nofronii Buzzurro, 2001 | Odostomia nofronii | 3477 |
| Turbonilla nonica Bartsch, 1927 | Turbonilla nonica | 19 |
| Odostomia nota Dall & Bartsch, 1909 | Odostomia nota | 19 |
| Oscilla notialis Pimenta, Santos & Absalao, 2008 | Oscilla notialis | 83435 |
| Odostomia nova Castellanos, 1982 | Odostomia nova | 83435 |
| Odostomia nuciformis Carpenter, 1864 | Odostomia nuciformis | 19 |
| Odostomia nunivakensis Dall & Bartsch, 1909 | Odostomia nunivakensis | 19 |
| Turbonilla nuttingi Dall & Bartsch, 1909 | Turbonilla nuttingi | 19 |
| Chemnitzia obeliscus Adams, 1850 | Turbonilla obeliscus | 83435 |
| Odostomia obesa Dall & Bartsch, 1909 | Odostomia tenuisculpta | 75097 |
| Turbonilla obesa Dall & Bartsch, 1909 | Turbonilla obesa | 19 |
| Turbonilla oceanica Oliver, 1915 | Turbonilla oceanica | 3204 |
| Odostomia oldroydi Dall & Bartsch, 1907 | Odostomia astricta | 75097 |
| Eulimella oliveri Peñas & Rolán, 2006 | Eulimella oliveri | 3477 |
| Odostomia orcia Dall & Bartsch, 1909 | Odostomia nuciformis | 75097 |
| Odostomia orcutti Bartsch, 1917 | Odostomia dinella | 75097 |
| Odostomia oregonensis Dall & Bartsch, 1907 | Odostomia oregonensis | 19 |
| Turbonilla oregonensis Dall & Bartsch, 1907 | Turbonilla oregonensis | 19 |
| Chemnitzia ornata d'Orbigny, 1841 | Turbonilla ornata | 83435 |
| Babella ovalis Peñas, Rolán & Sabelli, 2020 | Babella ovalis | 3477 |
| Turbonilla painei Dall & Bartsch, 1909 | Turbonilla chocolata | 75097 |
| Chrysallida palazzii Micali, 1984 | Chrysallida palazzii | 3477 |
| Turbonilla paralaminata Castellanos, 1982 | Turbonilla paralaminata | 83435 |
| Turbonilla parviscymna Pimenta & Absalao, 2004 | Turbonilla parviscymna | 83435 |
| Menestho patagonica Luca, Güller & Zelaya, 2021 | Menestho patagonica | 3477 |
| Odostomia paucistriata Jeffreys, 1884 | Turbonilla paucistriata | 83435 |
| Turbonilla pauli Smith & Gordon, 1958 | Turbonilla pauli | 19 |
| Turbonilla paulinoi Pimenta & Absalao, 2004 | Turbonilla paulinoi | 83435 |
| Turbonilla pedroana Dall & Bartsch, 1903 | Turbonilla chocolata | 75097 |
| Turbonilla peilei Dall & Bartsch, 1911 | Turbonilla peilei | 83435 |
| Turbonilla penistoni Bush, 1899 | Turbonilla penistoni | 83435 |
| Turbonilla pentalopha Dall & Bartsch, 1903 | Turbonilla pentalopha | 19 |
| Turbonilla pequensis Dall & Bartsch, 1909 | Turbonilla pequensis | 19 |
| Turbonilla pericuana Strong, 1949 | Turbonilla pericuana | 19 |
| Turbonilla periscelida Dall & Bartsch, 1909 | Turbonilla periscelida | 19 |
| Turbonilla perlepida Verrill, 1885 | Turbonilla perlepida | 19 |
| Odostomia pesa Dall & Bartsch, 1909 | Odostomia pesa | 19 |
| Turbonilla pesa Dall & Bartsch, 1910 | Turbonilla pesa | 19 |
| Turbonilla pfeifferi Clessin, 1902 | Turbonilla pfeifferi | 83435 |
| Odostomia phanea Dall & Bartsch, 1907 | Odostomia tenuisculpta | 75097 |
| Odostomia phanella Dall & Bartsch, 1909 | Odostomia phanella | 19 |
| Odostomia pharcida Dall & Bartsch, 1907 | Odostomia pharcida | 19 |
| Odostomia philomelae Watson, 1886 | Turbonilla philomelae | 83435 |
| Brachystomia pizzinii Nofroni, Renda & Vannozzi, 2022 | Brachystomia pizzinii | 3477 |
| Triptychus pliocena Bartsch, 1955 | Peristichia pliocena | 83435 |
| Turbonilla pluto Dall & Bartsch, 1909 | Turbonilla pluto | 19 |
| Odostomia pocahontasae Henderson & Bartsch, 1914 | Odostomia pocahontasae | 19 |
| Turbonilla pocahontasae Henderson & Bartsch, 1914 | Turbonilla pocahontasae | 19 |
| Aclis polita Verrill, 1872 | Eulimella polita | 83435 |
| Odostomia porteri Baker, Hanna, & Strong, 1928 | Odostomia porteri | 19 |
| Turbonilla portoricana Dall & Simpson, 1901 | Turbonilla portoricana | 19 |
| Turbonilla portoricensis Clessin, 1900 | Turbonilla portoricensis | 83435 |
| Turbonilla postacuticostata Sacco, 1892 | Turbonilla postacuticostata | 3477 |
| Turbonilla powhatani Henderson & Bartsch, 1914 | Turbonilla powhatani | 19 |
| Odostomia pratoma Dall & Bartsch, 1909 | Odostomia pratoma | 19 |
| Helodiamea prima Peñas, Rolán & Sabelli, 2020 | Helodiamea prima | 3477 |
| Odostomia profundicola Dall & Bartsch, 1909 | Odostomia profundicola | 19 |
| Turbonilla profundicola Dall & Bartsch, 1909 | Turbonilla stylina | 75097 |
| Turbonilla protracta Dall, 1892 | Turbonilla protracta | 19 |
| Odostomia puelchana Castellanos, 1982 | Odostomia puelchana | 83435 |
| Turbonilla pugetensis Bartsch, 1917 | Turbonilla pugetensis | 19 |
| Chemnitzia pulchella d'Orbigny, 1841 | Turbonilla pulchella | 83435 |
| Odostomia pulcherrima Dall & Bartsch, 1909 | Odostomia pulcherrima | 19 |
| Odostomia pulcia Dall & Bartsch, 1909 | Odostomia pulcia | 19 |
| Turbonilla pumila Seguenza, 1876 | Turbonilla pumila | 3477 |
| Obeliscus pumilio Smith, 1890 | Syrnola pumilio | 83435 |
| Chemnitzia puncta Adams, 1850 | Turbonilla puncta | 83435 |
| Hinemoa punicea Oliver, 1915 | Oscilla punicea | 3477 |
| Turbonilla punicea Dall, 1884 | Turbonilla punicea | 19 |
| Chemnitzia pupoides d'Orbigny, 1841 | Turbonilla pupoides | 83435 |
| Turbonilla pyrrha Bush, 1899 | Turbonilla pyrrha | 83435 |
| Turbonilla pyrrha [bis] Bartsch, 1927 | Turbonilla pyrrha [bis] | 83435 |
| Odostomia quadrae Dall & Bartsch, 1910 | Odostomia quadrae | 19 |
| Turbonilla rathbuni Verrill & Smith, 1880 | Turbonilla rathbuni | 19 |
| Turbonilla raymondi Dall & Bartsch, 1909 | Turbonilla raymondi | 19 |
| Turbonilla recta Dall & Bartsch, 1909 | Turbonilla recta | 19 |
| Turbonilla rectogallica Sacco, 1892 | Turbonilla rectogallica | 3477 |
| Turbonilla regina Dall & Bartsch, 1909 | Turbonilla regina | 19 |
| Odostomia resina Dall & Bartsch, 1909 | Odostomia resina | 19 |
| Turbonilla resticulum Dall, 1889 | Bacteridium resticulum | 83435 |
| Chemnitzia reticulata Adams, 1850 | Turbonilla reticulata | 83435 |
| Odostomia rhabdota Watson, 1886 | Turbonilla rhabdota | 83435 |
| Turbonilla rhachialis Pimenta & Absalao, 2004 | Turbonilla rhachialis | 83435 |
| Turbonilla rhea Bartsch, 1927 | Turbonilla rhea | 19 |
| Odostomia richi Dall & Bartsch, 1909 | Odostomia richi | 19 |
| Turbonilla ridgwayi Dall & Bartsch, 1909 | Turbonilla ridgwayi | 19 |
| Chemnitzia riisei Mörch, 1875 | Turbonilla riisei | 83435 |
| Turbonilla riisei Morch, 1875 | Turbonilla riisei | 19 |
| Chrysallida rinaldii Micali & Nofroni, 2004 | Chrysallida rinaldii | 3477 |
| Turbonilla rinella Dall & Bartsch, 1910 | Turbonilla rinella | 19 |
| Brachystomia rissoides Hanley, 1844 | Odostomia scalaris | 99837 |
| Odostomia rissoides Hanley, 1844 | Odostomia scalaris | 75097 |
| Odostomia ritteri Dall & Bartsch, 1909 | Odostomia ritteri | 19 |
| Turbonilla rixtae Jong & Coomans, 1988 | Turbonilla rixtae | 83435 |
| Miralda robertsoni Altena, 1975 | Folinella robertsoni | 83435 |
| Odostomia rosacea Pease, 1868 | Odostomia rosacea | 3477 |
| Turbonilla rosewateri Corgan & van Aartsen, 1993 | Turbonilla rosewateri | 3477 |
| Eulimella rudis Watson, 1886 | Eulimella rudis | 83435 |
| Turbonilla rushii Bush, 1899 | Turbonilla rushii | 83435 |
| Odostomia ryalea Bartsch, 1927 | Odostomia ryalea | 19 |
| Odostomia ryclea Bartsch, 1927 | Odostomia ryclea | 19 |
| Obeliscus sanctaehelenae Smith, 1890 | Pyramidella sanctaehelenae | 83435 |
| Odostomia sanctorum Dall & Bartsch, 1909 | Odostomia sanctorum | 19 |
| Turbonilla sanctorum Dall & Bartsch, 1909 | Turbonilla sanctorum | 19 |
| Odostomia sanjuanensis Bartsch, 1920 | Odostomia sanjuanensis | 19 |
| Turbonilla sanmatiensis Castellanos, 1982 | Turbonilla sanmatiensis | 83435 |
| Odostomia santarosana Dall & Bartsch, 1909 | Odostomia tenuisculpta | 75097 |
| Turbonilla santarosana Dall & Bartsch, 1909 | Turbonilla santarosana | 19 |
| Odostomia sapia Dall & Bartsch, 1909 | Odostomia sapia | 19 |
| Odostomia satura Carpenter, 1864 | Odostomia satura | 19 |
| Odostomia scalaris MacGillivray, 1843 | Odostomia scalaris | 19 |
| Turbonilla scammonensis Bartsch, 1912 | Turbonilla scammonensis | 19 |
| Turbonilla scapulata Pimenta & Absalao, 2004 | Turbonilla scapulata | 83435 |
| Turbonilla schmitti Bartsch, 1917 | Turbonilla schmitti | 19 |
| Pyrgulina scripta van Aartsen & Corgan, 1996 | Pyrgulina scripta | 3477 |
| Turbonilla sculpturata Turton, 1932 | Pyrgulina scripta | 3477 |
| Boonea scymnocelata Pimenta, Absalao & Miyaji, 2009 | Boonea scymnocelata | 83435 |
| Turbonilla sebastiani Bartsch, 1917 | Turbonilla sebastiani | 19 |
| Jaminia seminuda Adams, 1839 | Boonea seminuda | 83435 |
| Odostomia semisculpta Lange de Morretes, 1949 | Odostomia semisculpta | 83435 |
| Turbonilla senilis Bartsch, 1909 | Turbonilla interrupta | 75097 |
| Odostomia septentrionalis Dall & Bartsch, 1909 | Odostomia septentrionalis | 19 |
| Turbonilla serrae Dall & Bartsch, 1907 | Turbonilla serrae | 19 |
| Turbonilla shuyakensis Bartsch, 1927 | Turbonilla shuyakensis | 19 |
| Turbonilla signae Dall & Bartsch, 1909 | Turbonilla signae | 19 |
| Odostomia silesui Nofroni, 1988 | Odostomia silesui | 3477 |
| Odostomia sillana Dall & Bartsch, 1909 | Odostomia sillana | 19 |
| Chemnitzia simplex d'Orbigny, 1841 | Eulimella simplex | 83435 |
| Odetta simplex Folin, 1872 | Odetta simplex | 83435 |
| Turbonilla simpsoni Dall & Bartsch, 1909 | Turbonilla simpsoni | 19 |
| Streptocionella singularis Pfeffer, 1886 | Streptocionella singularis | 83435 |
| Turbonilla sirena Bartsch, 1927 | Turbonilla sirena | 83435 |
| Odostomia sitkaensis Clessin, 1900 | Odostomia sitkaensis | 19 |
| Odostomia skidegatensis Bartsch, 1912 | Odostomia skidegatensis | 19 |
| Odostomia smithii Verrill, 1880 | Odostomia smithii | 19 |
| Turbonilla smithii Verrill, 1880 | Eulimella smithii | 83435 |
| Turbonilla smithii Pfeffer, 1905 | Turbonilla smithii | 83435 |
| Odostomia socorroensis Dall & Bartsch, 1909 | Odostomia tenuisculpta | 75097 |
| Odostomia somersi Verrill & Bush, 1900 | Odostomia somersi | 19 |
| Chemnitzia speira Ravenel, 1859 | Turbonilla speira | 83435 |
| Odostomia sperabilis Hedley, 1909 | Odostomia sperabilis | 3477 |
| Chemnitzia spirata Kurtz & Stimpson, 1851 | Turbonilla spirata | 83435 |
| Odostomia spreadboroughi Dall & Bartsch, 1910 | Odostomia spreadboroughi | 19 |
| Turbonilla stelleri Bartsch, 1927 | Turbonilla stelleri | 19 |
| Odostomia stephensae Dall & Bartsch, 1909 | Odostomia stephensae | 19 |
| Turbonilla stillmani Smith & Gordon, 1948 | Turbonilla stillmani | 19 |
| Turbonilla stimpsoni Bush, 1899 | Turbonilla stimpsoni | 19 |
| Evalea stocki Jong & Coomans, 1988 | Evalea stocki | 83435 |
| Odostomia straminea Carpenter, 1865 | Odostomia tenuisculpta | 75097 |
| Turbonilla strebeli Corgan, 1969 | Turbonilla strebeli | 83435 |
| Turbonilla stricta Verrill, 1873 | Turbonilla stricta | 19 |
| Odostomia striolata Forbes & Hanley, 1850 | Odostomia striolata | 3477 |
| Odostomia strongi Bartsch, 1927 | Odostomia strongi | 19 |
| Turbonilla strongi Willett, 1931 | Turbonilla strongi | 19 |
| Monoptygma styliformis Mörch, 1875 | Careliopsis styliformis | 83435 |
| Turbonilla subcuspidata Carpenter, 1864 | Turbonilla tenuicula | 75097 |
| Odostomia subdotella Hertlein & Strong, 1951 | Odostomia subdotella | 19 |
| Odostomia subglobosa Bartsch, 1912 | Odostomia subglobosa | 19 |
| Odostomia suboblonga Jeffreys, 1884 | Odostomia suboblonga | 3477 |
| Chemnitzia substriata Adams, 1850 | Turbonilla substriata | 83435 |
| Odostomia subturrita Dall & Bartsch, 1909 | Odostomia subturrita | 19 |
| Turbonilla subulina Monterosato, 1889 | Turbonilla subulina | 3477 |
| Odostomia sulcata Verrill, 1880 | Odostomia sulcosa | 75097 |
| Phasianella sulcosa Mighels, 1843 | Odostomia sulcosa | 83435 |
| Turbonilla sumneri Bartsch, 1909 | Turbonilla sumneri | 19 |
| Turbonilla superba Dall & Bartsch, 1909 | Turbonilla superba | 19 |
| Eulimastoma surinamense Altena, 1975 | Eulimastoma surinamense | 83435 |
| Turbonilla swani Dall & Bartsch, 1909 | Turbonilla swani | 19 |
| Turbonilla syrtensis van Aartsen, 1981 | Turbonilla syrtensis | 3477 |
| Odostomia tacomaensis Dall & Bartsch, 1907 | Odostomia tacomaensis | 19 |
| Turbonilla talma Dall & Bartsch, 1910 | Turbonilla talma | 19 |
| Odostomia talpa Dall & Bartsch, 1909 | Odostomia talpa | 19 |
| Turbonilla taylori Dall & Bartsch, 1907 | Turbonilla taylori | 19 |
| Brachystomia tenuilirata Luca, Güller & Zelaya, 2021 | Brachystomia tenuilirata | 3477 |
| Odostomia tenuisculpta Carpenter, 1864 | Odostomia tenuisculpta | 19 |
| Pyramidella terebellum Müller, 1886 | Pyramidella terebellum | 19 |
| Turbonilla terebralis Carpenter, 1857 | Turbonilla tenuicula | 75097 |
| Odostomia teres Bush, 1885 | Odostomia teres | 19 |
| Odostomia terryi Olsson & McGinty, 1958 | Ivara terryi | 83435 |
| Chemnitzia textilis Kurtz, 1860 | Turbonilla textilis | 83435 |
| Turbonilla thaanumi Pilsbry & Vanatta, 1908 | Turbonilla thaanumi | 3477 |
| Odostomia thalia Bartsch, 1912 | Odostomia thalia | 19 |
| Odostomia thea Bartsch, 1912 | Odostomia thea | 19 |
| Turbonilla theona Bartsch, 1927 | Turbonilla theona | 19 |
| Odostomia tillamookensis Dall & Bartsch, 1907 | Odostomia tenuisculpta | 75097 |
| Turbonilla tolteca Baker, Hanna, & Strong, 1928 | Turbonilla tolteca | 19 |
| Odostomia torcula Mörch, 1876 | Odostomia torcula | 83435 |
| Peristichia toreta Dall, 1889 | Peristichia toreta | 19 |
| Odostomia tornata Verrill, 1884 | Odostomia tornata | 19 |
| Turbonilla toyatani Henderson & Bartsch, 1914 | Turbonilla toyatani | 19 |
| Odostomia trachis Dall & Bartsch, 1909 | Odostomia trachis | 19 |
| Volutaxiella translucens Strebel, 1908 | Odostomia translucens | 3477 |
| Odostomia tremperi Bartsch, 1927 | Odostomia tremperi | 19 |
| Turbonilla tremperi Bartsch, 1917 | Turbonilla tremperi | 19 |
| Turbonilla truncatelloides Smith, 1890 | Turbonilla truncatelloides | 83435 |
| Menestho truncatula Odhner, 1915 | Menestho truncatula | 83435 |
| Turbonilla tupinamba Pimenta & Absalao, 2002 | Turbonilla tupinamba | 83435 |
| Odostomia turricula Dall & Bartsch, 1903 | Odostomia turricula | 19 |
| Odostomia turriculata Monterosato, 1869 | Odostomia turriculata | 3477 |
| Chemnitzia turris d'Orbigny, 1841 | Turbonilla turris | 83435 |
| Odostomia turrita Hanley, 1844 | Odostomia turrita | 3477 |
| Turbonilla uaca Pimenta & Absalao, 2004 | Turbonilla uaca | 83435 |
| Turbonilla ulloa Bartsch, 1917 | Turbonilla ulloa | 19 |
| Odostomia ulloana Strong, 1949 | Odostomia ulloana | 19 |
| Odostomia unalaskensis Dall & Bartsch, 1909 | Odostomia unalaskensis | 19 |
| Turbo unidentata Montagu, 1803 | Odostomia unidentata | 83435 |
| Pyramidella unifasciata Forbes, 1843 | Pyramidella unifasciata | 19 |
| Turbonilla unifasciata Carpenter, 1857 | Turbonilla tenuicula | 75097 |
| Turbonilla unilirata Bush, 1899 | Turbonilla unilirata | 19 |
| Turbonilla uruguayensis Pilsbry, 1897 | Turbonilla uruguayensis | 83435 |
| Odostomia valdezi Dall & Bartsch, 1907 | Odostomia valdezi | 19 |
| Turbonilla valdezi Dall & Bartsch, 1907 | Turbonilla aurantia | 75097 |
| Turbonilla valida Verrill & Bush, 1900 | Turbonilla valida | 19 |
| Odostomia vancouverensis Dall & Bartsch, 1910 | Odostomia vancouverensis | 19 |
| Orinella vanhyningi Bartsch, 1944 | Orinella vanhyningi | 19 |
| Pselliogyra varia Odé, 1993 | Parthenina varia | 83435 |
| Pyramidella ventricosa Forbes, 1843 | Pyramidella ventricosa | 19 |
| Pyrgulina ventricosa Horning & Mermod, 1925 | Pyrgulina ventricosa | 19 |
| Turbonilla verkruezeni Clessin, 1902 | Turbonilla verkruezeni | 83435 |
| Turbonilla verrilli Bartsch, 1909 | Turbonilla verrilli | 19 |
| Turbonilla vexativa Dall & Bartsch, 1909 | Turbonilla vexativa | 19 |
| Odostomia vicola Dall & Bartsch, 1909 | Odostomia vicola | 19 |
| Odostomia vincta Dall & Bartsch, 1909 | Odostomia vincta | 19 |
| Turbonilla vineae Bartsch, 1909 | Turbonilla interrupta | 75097 |
| Turbonilla virga Dall, 1884 | Turbonilla virga | 19 |
| Turbonilla virgata Dall, 1892 | Turbonilla virgata | 19 |
| Egila virginiae Altena, 1975 | Egila virginiae | 83435 |
| Odostomia virginica Henderson & Bartsch, 1914 | Odostomia virginica | 19 |
| Turbonilla virginica Henderson & Bartsch, 1914 | Turbonilla virginica | 19 |
| Turbonilla virgulinoi Absalao, Santos & Oliveira Tenório, 2003 | Turbonilla virgulinoi | 83435 |
| Turbonilla viridaria Dall, 1884 | Turbonilla viridaria | 19 |
| Turbonilla viscainoi Bartsch, 1917 | Turbonilla viscainoi | 19 |
| Turbonilla vivesi Herlein & Strong, 1951 | Turbonilla vivesi | 19 |
| Odostomia vizcainoana Baker, Hanna, & Strong, 1928 | Odostomia vizcainoana | 19 |
| Evalina waikikiensis Pilsbry, 1918 | Evalea waikikiensis | 77848 |
| Odostomia washingtonia Bartsch, 1920 | Odostomia washingtonia | 19 |
| Sayella watlingsi Morrison, 1939 | Sayella watlingsi | 83435 |
| Odostomia weberi Morrison, 1965 | Eulimastoma weberi | 83435 |
| Turbonilla weldi Dall & Bartsch, 1909 | Turbonilla weldi | 19 |
| Turbonilla westermanni Jong & Coomans, 1988 | Turbonilla westermanni | 83435 |
| Turbonilla whiteavesi Bartsch, 1909 | Turbonilla whiteavesi | 19 |
| Odostomia whitei Bartsch, 1927 | Odostomia whitei | 19 |
| Turbonilla wickhami Dall & Bartsch, 1909 | Turbonilla wickhami | 19 |
| Odostomia widmeri Tisselli & Manousis, 2022 | Odostomia widmeri | 3477 |
| Odostomia willetti Bartsch, 1917 | Odostomia willetti | 19 |
| Turbonilla willetti Smith & Gordon, 1948 | Turbonilla willetti | 19 |
| Odostomia winkleyi Bartsch, 1909 | Odostomia winkleyi | 19 |
| Turbonilla winkleyi Bartsch, 1909 | Turbonilla interrupta | 75097 |
| Turbonilla wrightsvillensis Powell, 1983 | Turbonilla wrightsvillensis | 83435 |
| Turbonilla xenophyes Melvill & Standen, 1912 | Eulimella xenophyes | 83435 |
| Chrysallida yamaniaensis Peñas, Rolán & Sabelli, 2020 | Chrysallida yamaniaensis | 3477 |
| Turbonilla yolettae Hertlein & Strong, 1951 | Turbonilla yolettae | 19 |
| Odostomia youngi Dall & Bartsch, 1910 | Odostomia youngi | 19 |
| Turbonilla zulmae Pimenta & Absalao, 1998 | Turbonilla zulmae | 83435 |