Calyptraea amygdalus Valenciennes, 1846 accepted as
Crepidula onyx G. B. Sowerby I, 1824 (source of synonymy)
Calyptraea arenata Broderip, 1834 accepted as
Crepidula arenata (Broderip, 1834) (source of synonymy)
Calyptraea echinus Broderip, 1834 accepted as
Crepidula aculeata (Gmelin, 1791) accepted as
Bostrycapulus aculeatus (Gmelin, 1791) (source of synonymy)
Calyptraea excavata Broderip, 1834 accepted as
Crepidula excavata (Broderip, 1834) (source of synonymy)
Calyptraea foliacea Broderip, 1834 accepted as
Crepipatella foliacea (Broderip, 1834) (additional source)
Calyptraea hystrix Broderip, 1834 accepted as
Crepidula aculeata (Gmelin, 1791) accepted as
Bostrycapulus aculeatus (Gmelin, 1791) (source of synonymy)
Calyptraea incurva Broderip, 1834 accepted as
Crepidula incurva (Broderip, 1834) (source of synonymy)
Calyptraea lessonii Broderip, 1834 accepted as
Crepidula lessonii (Broderip, 1834) (source of synonymy)
Calyptraea marginalis Broderip, 1834 accepted as
Crepidula marginalis (Broderip, 1834) (source of synonymy)
Calyptraea monoxyla Lesson, 1831 accepted as
Maoricrypta monoxyla (Lesson, 1831) (source of synonymy)
Calyptraea plana A. Adams & Reeve, 1850 accepted as
Ergaea walshi (Reeve, 1859) (source of synonymy)
Calyptraea squama Broderip, 1834 accepted as
Crepidula striolata Menke, 1851 (source of synonymy)
Calyptraeidae Lamarck, 1809 (additional source)
Crepidula Lamarck, 1799 (additional source)
Crepidula aculeata (Gmelin, 1791) accepted as
Bostrycapulus aculeatus (Gmelin, 1791) (additional source)
Crepidula acuta H. C. Lea, 1842 accepted as
Crepidula convexa Say, 1822 (source of synonymy)
Crepidula adunca G. B. Sowerby I, 1825 (additional source)
Crepidula aeola Dall, 1927 (source of synonymy)
Crepidula aplysioides Reeve, 1859 (additional source)
Crepidula calceolina Deshayes, 1830 accepted as
Crepidula unguiformis Lamarck, 1822 (source of synonymy)
Crepidula californica Tryon, 1886 accepted as
Crepidula aculeata (Gmelin, 1791) accepted as
Bostrycapulus aculeatus (Gmelin, 1791) (source of synonymy)
Crepidula candida Risso, 1826 accepted as
Crepidula unguiformis Lamarck, 1822 (source of synonymy)
Crepidula cerithicola C. B. Adams, 1852 (additional source)
Crepidula coei S. S. Berry, 1950 accepted as
Crepidula naticarum M. B. Williamson, 1905 (source of synonymy)
Crepidula contorta Quoy & Gaimard, 1835 accepted as
Maoricrypta monoxyla (Lesson, 1831) (source of synonymy)
Crepidula costata Deshayes, 1830 accepted as
Maoricrypta costata (G. B. Sowerby I, 1824) (source of synonymy)
Crepidula costulata Dunker, 1852 accepted as
Crepidula incurva (Broderip, 1834) (source of synonymy)
Crepidula crepidula (Linnaeus, 1767) accepted as
Crepidula unguiformis Lamarck, 1822 (source of synonymy)
Crepidula densata Conrad, 1843 accepted as
Crepidula fornicata (Linnaeus, 1758) (source of synonymy)
Crepidula depressa Say, 1822 (additional source)
Crepidula deshayesii de Folin, 1867 accepted as
Crepidula unguiformis Lamarck, 1822 (source of synonymy)
Crepidula dilatata Lamarck, 1822 accepted as
Crepipatella dilatata (Lamarck, 1822) (source of synonymy)
Crepidula excavata (Broderip, 1834) (identification resource)
Crepidula excisa R. A. Philippi, 1849 accepted as
Ergaea walshi (Reeve, 1859) (source of synonymy)
Crepidula explanata A. Gould, 1853 accepted as
Crepidula perforans Valenciennes, 1846 (source of synonymy)
Crepidula exuviata Reeve, 1859 accepted as
Crepidula perforans Valenciennes, 1846 (source of synonymy)
Crepidula fasciata de Roissy, 1805 accepted as
Crepidula unguiformis Lamarck, 1822 (source of synonymy)
Crepidula fimbriata Reeve, 1859 (additional source)
Crepidula foliacea (Broderip, 1834) accepted as
Crepipatella foliacea (Broderip, 1834) (additional source)
Crepidula fornicata (Linnaeus, 1758) (additional source)
Crepidula gibbosa Defrance, 1818 sensu Deshayes, 1836 accepted as
Crepidula moulinsii Michaud, 1829 (additional source)
Crepidula glauca Say, 1822 accepted as
Crepidula convexa Say, 1822 (source of synonymy)
Crepidula grandis Middendorff, 1849 accepted as
Grandicrepidula grandis (Middendorff, 1849) (additional source)
Crepidula gravispinosa Kuroda & T. Habe, 1950 accepted as
Bostrycapulus gravispinosus (Kuroda & T. Habe, 1950) (source of synonymy)
Crepidula immersa Angas, 1865 accepted as
Maoricrypta immersa (Angas, 1865) (identification resource)
Crepidula incurva Zittel, 1865 † accepted as
Crepidula wilckensi Finlay, 1924 † accepted as
Maoricrypta radiata (F. W. Hutton, 1873) † (source of synonymy)
Crepidula italica Defrance, 1818 accepted as
Crepidula unguiformis Lamarck, 1822 (source of synonymy)
Crepidula lamina H. C. Lea, 1843 accepted as
Crepidula plana Say, 1822 (source of synonymy)
Crepidula lessonii (Broderip, 1834) (identification resource)
Crepidula lineolata Deshayes, 1830 accepted as
Crepidula costata G. B. Sowerby I, 1824 accepted as
Maoricrypta costata (G. B. Sowerby I, 1824) (source of synonymy)
Crepidula lingulata A. Gould, 1846 accepted as
Crepipatella lingulata (A. Gould, 1846) (source of synonymy)
Crepidula lirata Reeve, 1859 accepted as
Crepidula incurva (Broderip, 1834) (source of synonymy)
Crepidula maculosa Conrad, 1846 (identification resource)
Crepidula marginalis (Broderip, 1834) (identification resource)
Crepidula minuta Middendorff, 1849 accepted as
Crepidula nummaria A. Gould, 1846 (source of synonymy)
Crepidula monoxyla (Lesson, 1831) accepted as
Maoricrypta monoxyla (Lesson, 1831) (identification resource)
Crepidula moulinsii Michaud, 1829 (source of synonymy)
Crepidula naticarum M. B. Williamson, 1905 (identification resource)
Crepidula navicelloides P. P. Carpenter, 1864 accepted as
Crepidula nummaria A. Gould, 1846 (source of synonymy)
Crepidula nebulata Mabille, 1895 accepted as
Crepidula nivea C. B. Adams, 1852 (source of synonymy)
Crepidula nivea C. B. Adams, 1852 (identification resource)
Crepidula nivea var. glottidiarum Dall, 1905 accepted as
Crepidula glottidiarum Dall, 1905 (additional source)
Crepidula norrisiarum M. B. Williamson, 1905 (identification resource)
Crepidula nummaria A. Gould, 1846 (status source)
Crepidula onyx G. B. Sowerby I, 1824 (identification resource)
Crepidula orbella Yokoyama, 1920 accepted as
Ergaea walshi (Reeve, 1859) (source of synonymy)
Crepidula orbiculata Dall, 1919 accepted as
Crepipatella lingulata (A. Gould, 1846) (additional source)
Crepidula pallida (Broderip, 1834) accepted as
Calyptraea pallida Broderip, 1834 (source of synonymy)
Crepidula perforans Valenciennes, 1846 (identification resource)
Crepidula plana (A. Adams & Reeve, 1850) accepted as
Ergaea walshi (Reeve, 1859) (source of synonymy)
Crepidula protea A. d'Orbigny, 1841 (additional source)
Crepidula pulchella Aradas, 1846 accepted as
Crepidula unguiformis Lamarck, 1822 (source of synonymy)
Crepidula rhyssema Olsson & Harbison, 1953 accepted as
Crepidula plana Say, 1822 (source of synonymy)
Crepidula riisei Dunker, 1852 (additional source)
Crepidula rostriformis A. Gould, 1846 accepted as
Crepidula adunca G. B. Sowerby I, 1825 (source of synonymy)
Crepidula rugosa Anton, 1838 (source of synonymy)
Crepidula rugosa P. P. Carpenter, 1857 accepted as
Crepidula onyx G. B. Sowerby I, 1824 (source of synonymy)
Crepidula rugosa var. naticarum M. B. Williamson, 1905 accepted as
Crepidula naticarum M. B. Williamson, 1905 (source of synonymy)
Crepidula rugosa var. norrisiarum M. B. Williamson, 1905 accepted as
Crepidula norrisiarum M. B. Williamson, 1905 (source of synonymy)
Crepidula sandaliformis de Serres, 1830 accepted as
Crepidula unguiformis Lamarck, 1822 (source of synonymy)
Crepidula sandalina Deshayes, 1833 accepted as
Crepidula unguiformis Lamarck, 1822 (source of synonymy)
Crepidula scabies (Reeve, 1859) accepted as
Ergaea walshi (Reeve, 1859) (source of synonymy)
Crepidula sinuosa W. Turton, 1825 accepted as
Crepidula unguiformis Lamarck, 1822 (source of synonymy)
Crepidula solida Hinds, 1845 accepted as
Crepidula adunca G. B. Sowerby I, 1825 (source of synonymy)
Crepidula strigellata Dunker, 1853 accepted as
Crepidula striolata Menke, 1851 (source of synonymy)
Crepidula striolata Menke, 1851 (identification resource)
Crepidula tomentosa Quoy & Gaimard, 1832 accepted as
Crepidula aculeata (Gmelin, 1791) accepted as
Bostrycapulus aculeatus (Gmelin, 1791) (source of synonymy)
Crepidula uncata Menke, 1847 accepted as
Crepidula adunca G. B. Sowerby I, 1825 (source of synonymy)
Crepidula uncinata R. A. Philippi, 1887 accepted as
Crepidula dilatata Lamarck, 1822 accepted as
Crepipatella dilatata (Lamarck, 1822) (source of synonymy)
Crepidula unguiformis Lamarck, 1822 (additional source)
Crepidula virginica Conrad, 1870 † accepted as
Crepidula fornicata (Linnaeus, 1758) (source of synonymy)
Crepidula walshi Reeve, 1859 accepted as
Ergaea walshi (Reeve, 1859) (status source)
Crepidula williamsi Coe, 1947 (additional source)
Crepidula youngi (A. W. B. Powell, 1940) accepted as
Maoricrypta youngi A. W. B. Powell, 1940 (identification resource)
Crepipatella fluctuosa Taki, 1938 accepted as
Crepidula dorsata (Broderip, 1834) accepted as
Crepipatella dorsata (Broderip, 1834) (source of synonymy)
Crypta (Ergaea) walshi (Reeve, 1859) accepted as
Ergaea walshi (Reeve, 1859) (status source)
Crypta (Ianacus) unguiculus H. Adams & A. Adams, 1858 represented as
Crypta unguiculus H. Adams & A. Adams, 1858 accepted as
Crepidula nummaria A. Gould, 1846 (status source)
Crypta lamellosa A. Adams, 1862 accepted as
Ergaea walshi (Reeve, 1859) (source of synonymy)
Crypta nautarum Mörch, 1877 accepted as
Crepidula fornicata (Linnaeus, 1758) (source of synonymy)
Crypta rostralis Conrad, 1865 † accepted as
Crepidula adunca G. B. Sowerby I, 1825 (source of synonymy)