Abra lioica (Dall, 1881) (basis of record)
Acanthodoris pilosa (Abildgaard, 1789) (additional source)
Actinotrophon actinophorus (Dall, 1889) (basis of record)
Adalaria proxima (Alder & Hancock, 1854) (additional source)
Aequipecten glyptus (A. E. Verrill, 1882) (basis of record)
Alvania aequisculpta Keep, 1887 (basis of record)
Alvania almo Bartsch, 1911 (basis of record)
Alvania carpenteri (Weinkauff, 1885) accepted as Onoba carpenteri (Weinkauff, 1885) (additional source)
Alvania cosmia Bartsch, 1911 (basis of record)
Alvania purpurea Dall, 1871 (basis of record)
Amphissa haliaeeti (Jeffreys, 1867) accepted as Amphissa acutecostata (R. A. Philippi, 1844) (basis of record)
Anachis adelinae (Tryon, 1883) (basis of record)
Anachis avara (Say, 1822) accepted as Costoanachis avara (Say, 1822) (basis of record)
Anachis coronata (G. B. Sowerby I, 1832) (basis of record)
Anachis fayae Keen, 1971 (basis of record)
Anachis lafresnayi (P. Fischer & Bernardi, 1857) accepted as Cotonopsis lafresnayi (P. Fischer & Bernardi, 1857) (basis of record)
Anachis sanfelipensis H. N. Lowe, 1935 (additional source)
Anachis vexillum (Reeve, 1858) (basis of record)
Anadara transversa (Say, 1822) (basis of record)
Ancula gibbosa (Risso, 1818) (additional source)
Anticlimax occidens Pilsbry & Olsson, 1952 (basis of record)
Aplysia morio (A. E. Verrill, 1901) (basis of record)
Arctica islandica (Linnaeus, 1767) (additional source)
Arene carinata P. P. Carpenter, 1857 (basis of record)
Arene miniata (Dall, 1889) (basis of record)
Assiminea succinea (L. Pfeiffer, 1840) accepted as Angustassiminea succinea (L. Pfeiffer, 1840) (basis of record)
Astarte borealis (Schumacher, 1817) accepted as Tridonta borealis Schumacher, 1817 (additional source)
Astarte castanea (Say, 1822) accepted as Isocrassina castanea (Say, 1822) (basis of record)
Astarte crenata (J. E. Gray, 1824) (additional source)
Astarte montagui (Dillwyn, 1817) accepted as Tridonta montagui (Dillwyn, 1817) (additional source)
Astarte quadrans A. Gould, 1841 (basis of record)
Astarte undata A. Gould, 1841 (basis of record)
Bankia gouldi (Bartsch, 1908) (additional source)
Bittium bartolomense Bartsch, 1917 (basis of record)
Bittium santamariense Bartsch, 1917 (basis of record)
Brevinucula verrillii (Dall, 1886) (additional source)
Buccinum undatum Linnaeus, 1758 (additional source)
Bulbus smithii T. Brown, 1839 (additional source)
Cadlina laevis (Linnaeus, 1767) (additional source)
Caecum californicum Dall, 1885 (basis of record)
Caecum johnsoni Winkley, 1908 (basis of record)
Caecum pulchellum W. Stimpson, 1851 (basis of record)
Calliostoma gordanum J. H. McLean, 1970 (basis of record)
Calliostoma leanum (C. B. Adams, 1852) (basis of record)
Calliostoma turbinum Dall, 1896 (basis of record)
Capulus ungaricus (Linnaeus, 1758) (additional source)
Cardiomya abyssicola A. E. Verrill & K. J. Bush, 1898 (additional source)
Cardiomya perrostrata (Dall, 1881) (additional source)
Cardiomya striata (Jeffreys, 1876) (additional source)
Cavolinia gibbosa (A. d'Orbigny, 1835) (additional source)
Cavolinia inflexa (Lesueur, 1813) (additional source)
Cerithiopsis bakeri Bartsch, 1917 (basis of record)
Cerithiopsis oxys Bartsch, 1911 (basis of record)
Cetoconcha atypha v (basis of record)
Cetoconcha bulla (Dall, 1881) (basis of record)
Chione paphia (Linnaeus, 1767) accepted as Lirophora paphia (Linnaeus, 1767) (basis of record)
Chiroteuthis veranii lacertosa A. E. Verrill, 1881 (basis of record)
Chlamys islandica (O. F. Müller, 1776) (additional source)
Clio recurva (Children, 1823) (basis of record)
Clione limacina (Phipps, 1774) (additional source)
Colus pubescens (A. E. Verrill, 1882) (basis of record)
Colus pygmaeus (A. Gould, 1841) (basis of record)
Colus sabini (J. E. Gray, 1824) (additional source)
Colus stimpsoni (Mörch, 1868) (basis of record)
Conualevia marcusi Collier & Farmer, 1964 (basis of record)
Coronadoa simonsae Bartsch, 1946 (basis of record)
Couthouyella striatula (Couthouy, 1838) (basis of record)
Crenilabium exile (Jeffreys, 1870) (additional source)
Crepidula fornicata (Linnaeus, 1758) (additional source)
Creseis acicula (Rang, 1828) (additional source)
Crucibulum striatum (Say, 1826) (basis of record)
Cryptopecten phrygium (Dall, 1886) (basis of record)
Cuspidaria formosa A. E. Verrill & K. J. Bush, 1898 (basis of record)
Cuspidaria fraterna A. E. Verrill & K. J. Bush, 1898 (basis of record)
Cuspidaria gigantea Prashad, 1932 (basis of record)
Cuspidaria glacialis (G. O. Sars, 1878) (additional source)
Cuspidaria lamellosa (G. O. Sars, 1878) (additional source)
Cuspidaria media A. E. Verrill & K. J. Bush, 1898 (basis of record)
Cuspidaria parva A. E. Verrill & K. J. Bush, 1898 (additional source)
Cuspidaria turgida A. E. Verrill & K. J. Bush, 1898 (basis of record)
Cuspidaria undata (A. E. Verrill, 1884) (basis of record)
Cuspidaria ventricosa A. E. Verrill & K. J. Bush, 1898 (additional source)
Cuthona concinna (Alder & Hancock, 1843) accepted as Cuthonella concinna (Alder & Hancock, 1843) (additional source)
Cyclinella tenuis (Récluz, 1852) (basis of record)
Cylichna eburnea A. E. Verrill, 1885 (basis of record)
Cylichnella oryza (Totten, 1835) (basis of record)
Cymatoica undulata (Hanley, 1844) (basis of record)
Cyrtodaria siliqua (Spengler, 1793) (additional source)
Cythnia asteriaphila P. P. Carpenter, 1864 (basis of record)
Dinocardium robustum ([Lightfoot], 1786) (basis of record)
Dosinia discus (Reeve, 1850) (additional source)
Doto coronata (Gmelin, 1791) (additional source)
Ennucula tenuis (Montagu, 1808) (additional source)
Epitonium dallianum (A. E. Verrill & S. Smith, 1880) (additional source)
Eubranchus pallidus (Alder & Hancock, 1842) accepted as Amphorina pallida (Alder & Hancock, 1842) (additional source)
Eubranchus tricolor Forbes, 1838 (additional source)
Eudolium crosseanum (Monterosato, 1869) (basis of record)
Fargoa bushiana (Bartsch, 1909) (basis of record)
Fargoa dianthophila (H. W. Wells & M. J. Wells, 1961) (additional source)
Fargoa gibbosa (K. J. Bush, 1909) (basis of record)