• Cassis Scopoli, 1777
• Cassis (Bezoardica) Schumacher, 1817 accepted as Phalium Link, 1807
• Cassis (Bezoardica) wyvillei R. B. Watson, 1886 accepted as Echinophoria wyvillei (R. B. Watson, 1886)
• Cassis (Casmaria) H. Adams & A. Adams, 1853 accepted as Casmaria H. Adams & A. Adams, 1853
• Cassis (Casmaria) bonneti Cossmann, 1903 † accepted as Casmaria bonneti (Cossmann, 1903) †
• Cassis (Casmaria) thomsoni Brazier, 1876 accepted as Semicassis thomsoni (Brazier, 1876)
• Cassis (Casmaria) turgida Reeve, 1848 accepted as Casmaria turgida (Reeve, 1848)
• Cassis (Casmaria) turgida var. unicolor Pallary, 1926 accepted as Casmaria unicolor (Pallary, 1926)
• Cassis (Casmaria) vibexmexicana Stearns, 1894 accepted as Casmaria erinaceus (Linnaeus, 1758)
• Cassis (Cassidea) Bruguière, 1789 † accepted as Cassis Scopoli, 1777
• Cassis (Cassidea) haueri R. Hoernes & Auinger, 1884 † accepted as Echinophoria haueri (R. Hoernes & Auinger, 1884) †
• Cassis (Cassis) Scopoli, 1777 represented as Cassis Scopoli, 1777
• Cassis (Cassis) cornuta (Linnaeus, 1758) represented as Cassis cornuta (Linnaeus, 1758)
• Cassis (Cassis) flammea (Linnaeus, 1758) represented as Cassis flammea (Linnaeus, 1758)
• Cassis (Cassis) madagascariensis Lamarck, 1822 represented as Cassis madagascariensis Lamarck, 1822
• Cassis (Cassis) norai Prati Musetti, 1995 represented as Cassis norai Prati Musetti, 1995
• Cassis (Cassis) tessellata (Gmelin, 1791) represented as Cassis tessellata (Gmelin, 1791)
• Cassis (Cassis) tuberosa (Linnaeus, 1758) represented as Cassis tuberosa (Linnaeus, 1758)
• Cassis (Cypraecassis) Stutchbury, 1837 accepted as Cypraecassis Stutchbury, 1837
• Cassis (Cypraecassis) morus L. R. Cox, 1927 † (uncertain > unassessed)
• Cassis (Cypraecassis) pustulata L. R. Cox, 1927 † (uncertain > unassessed)
• Cassis (Echinophoria) Sacco, 1890 accepted as Echinophoria Sacco, 1890
• Cassis (Galeodocassis) Sacco, 1890 † accepted as Cassis Scopoli, 1777
• Cassis (Galeodocassis) anceps Sacco, 1890 † accepted as Cassis vicentina Fuchs, 1870 †
• Cassis (Galeodocassis) subharpaeformis Sacco, 1890 † accepted as Cassis vicentina Fuchs, 1870 †
• Cassis (Hypocassis) Iredale, 1927 represented as Cassis Scopoli, 1777
• Cassis (Hypocassis) abbotti Bouchet, 1988 represented as Cassis abbotti Bouchet, 1988
• Cassis (Hypocassis) exigua Tenison Woods, 1879 represented as Cassis exigua Tenison Woods, 1879
• Cassis (Hypocassis) fimbriata Quoy & Gaimard, 1833 represented as Cassis fimbriata Quoy & Gaimard, 1833
• Cassis (Hypocassis) kreipli H. Morrison, 2003 represented as Cassis kreipli H. Morrison, 2003
• Cassis (Hypocassis) nana Tenison Woods, 1879 accepted as Cassis exigua Tenison Woods, 1879
• Cassis (Hypocassis) patamakanthini Parth, 2000 represented as Cassis patamakanthini Parth, 2000
• Cassis (Hypocassis) salisburyensis Ludbrook, 1958 accepted as Cassis exigua Tenison Woods, 1879
• Cassis (Hypocassis) trinodosa (Tate, 1889) † represented as Cassis trinodosa (Tate, 1889) † accepted as Echinophoria trinodosa (Tate, 1889) †
• Cassis (Mangkalia) Beets, 1941 † represented as Cassis Scopoli, 1777
• Cassis (Mangkalia) martini Beets, 1941 † represented as Cassis martini Beets, 1941 †
• Cassis (Morionella) Dall, 1909 † represented as Cassis Scopoli, 1777
• Cassis (Morionella) chevallieri Cossmann, 1889 † accepted as Cassis chevallieri Cossmann, 1889 †
• Cassis (Morionella) harpaeformis Lamarck, 1803 † accepted as Cassis harpaeformis Lamarck, 1803 †
• Cassis (Morionella) lelongi Gain, Belliard & Le Renard, 2017 † represented as Cassis lelongi Gain, Belliard & Le Renard, 2017 †
• Cassis (Morionella) nigellensis Gain, Belliard & Le Renard, 2017 † represented as Cassis nigellensis Gain, Belliard & Le Renard, 2017 †
• Cassis (Morionella) parfouruorum Gain, Belliard & Le Renard, 2017 † represented as Cassis parfouruorum Gain, Belliard & Le Renard, 2017 †
• Cassis (Morionella) verrucosa Perry, 1810 † accepted as Cassis verrucosa Perry, 1810 †
• Cassis (Phalium) Link, 1807 accepted as Phalium Link, 1807
• Cassis (Phalium) aldrichi Dall, 1890 † accepted as Semicassis aldrichi (Dall, 1890) †
• Cassis (Phalium) dalli F. M. Anderson, 1929 † accepted as Echinophoria hadra (Woodring & Olsson, 1957)
• Cassis (Phalium) taitii (Conrad, 1834) † represented as Cassis taitii Conrad, 1834 †
• Cassis (Semicassis) Mörch, 1852 accepted as Semicassis Mörch, 1852
• Cassis (Semicassis) brasili (Cossmann & Pissarro, 1905) † represented as Cassis brasili (Cossmann & Pissarro, 1905) †
• Cassis (Semicassis) denseplicata K. Martin, 1916 † accepted as Cypraecassis denseplicata (K. Martin, 1916) †
• Cassis (Semicassis) fortisulcata E. A. Smith, 1904 accepted as Semicassis umbilicata (Pease, 1861)
• Cassis (Semicassis) lagenaeformis O. Boettger, 1883 † (uncertain > unassessed)
• Cassis (Semicassis) rembangensis K. Martin, 1899 † accepted as Phalium rembangensis (K. Martin, 1899) †
• Cassis (Semicassis) shubutensis Aldrich, 1885 † (uncertain > unassessed)
• Cassis (Semicassis) subsulcosa R. Hoernes & Auinger, 1884 † accepted as Semicassis subsulcosa (R. Hoernes & Auinger, 1884) †
• Cassis (Semicassis) tegalensis K. Martin, 1899 † accepted as Linatella caudata (Gmelin, 1791)
• Cassis (Semicassis) undulata (Gmelin, 1791) accepted as Semicassis undulata (Gmelin, 1791)
• Cassis (Semicassis) undulata var. minima Pallary, 1900 accepted as Semicassis undulata (Gmelin, 1791)
• Cassis (Semicassis) undulata var. minor Pallary, 1900 accepted as Semicassis undulata (Gmelin, 1791)
• Cassis abbotti Bouchet, 1988
• Cassis abbreviata Lamarck, 1822 accepted as Semicassis granulata (Born, 1778)
• Cassis achatina Lamarck, 1816 accepted as Semicassis labiata (G. Perry, 1811)
• Cassis achatina var. inornata Pilsbry, 1895 accepted as Semicassis inornata (Pilsbry, 1895)
• Cassis adansoni Locard, 1886 accepted as Semicassis saburon (Bruguière, 1792)
• Cassis adcocki G. B. Sowerby III, 1896 accepted as Semicassis adcocki (G. B. Sowerby III, 1896) accepted as Antephalium adcocki (G. B. Sowerby III, 1896)
• Cassis aeneae Brongniart, 1823 † accepted as Cassis thesei Brongniart, 1823 †
• Cassis aequinodosa F. Sandberger, 1860 † accepted as Echinophoria rondeleti (Basterot, 1825) †
• Cassis africana Fulton, 1930 accepted as Semicassis craticulata (Euthyme, 1885)
• Cassis alba Perry, 1811 accepted as Cassis flammea (Linnaeus, 1758)
• Cassis alea Röding, 1798 accepted as Phalium areola (Linnaeus, 1758)
• Cassis altispira Beu, 2010 †
• Cassis anceps Sacco, 1890 † accepted as Cassis vicentina Fuchs, 1870 †
• Cassis anwari Abbas, 1967 †
• Cassis areola (Linnaeus, 1758) accepted as Phalium areola (Linnaeus, 1758)
• Cassis avellana Brongniart, 1822 † accepted as Avellana avellana (Brongniart, 1822) †
• Cassis bellardii Michelotti, 1847 † accepted as Cassis major Grateloup, 1834 †
• Cassis beyrichi Michelotti, 1861 † accepted as Sconsia beyrichi (Michelotti, 1861) †
• Cassis bezoar Gray, 1839 accepted as Phalium glaucum (Linnaeus, 1758)
• Cassis bicarinata Jonas, 1839 accepted as Cassis fimbriata Quoy & Gaimard, 1833
• Cassis bicarinata var. decresensis Hedley, 1923 accepted as Cassis fimbriata Quoy & Gaimard, 1833
• Cassis bicincta Bayer, 1935 accepted as Cypraecassis testiculus (Linnaeus, 1758)
• Cassis bisulcata Schubert & J. A. Wagner, 1829 accepted as Semicassis bisulcata (Schubert & J. A. Wagner, 1829)
• Cassis bituberculosa E. von Martens, 1901 accepted as Echinophoria bituberculosa (E. von Martens, 1901)
• Cassis booleyi G. B. Sowerby III, 1900 accepted as Semicassis bisulcata (Schubert & J. A. Wagner, 1829)
• Cassis brasili (Cossmann & Pissarro, 1905) †
• Cassis caelatura Conrad, 1847 † (uncertain > unassessed)
• Cassis calamistrata Locard, 1891 accepted as Semicassis undulata (Gmelin, 1791)
• Cassis calantica Deshayes, 1835 † accepted as Sconsia calantica (Deshayes, 1835) †
• Cassis callosa Röding, 1798 accepted as Nassarius gibbosulus (Linnaeus, 1758) accepted as Tritia gibbosula (Linnaeus, 1758)
• Cassis callosus Röding, 1798 accepted as Nassarius gibbosulus (Linnaeus, 1758) accepted as Tritia gibbosula (Linnaeus, 1758)
• Cassis calusa Petuch & Berschauer, 2018 †
• Cassis cameo W. Stimpson, 1860 accepted as Cassis madagascariensis Lamarck, 1822
• Cassis cancellata Röding, 1798 accepted as Phalium decussatum (Linnaeus, 1758)
• Cassis caputequinum Röding, 1798 accepted as Cassis cornuta (Linnaeus, 1758)
• Cassis centiquadrata Valenciennes, 1832 accepted as Semicassis centiquadrata (Valenciennes, 1832)
• Cassis cepa Röding, 1798 accepted as Semicassis granulata (Born, 1778)
• Cassis cernica G. B. Sowerby III, 1888 accepted as Casmaria cernica (G. B. Sowerby III, 1888)
• Cassis chevallieri Cossmann, 1889 †
• Cassis coarctata G. B. Sowerby I, 1825 accepted as Cypraecassis coarctata (G. B. Sowerby I, 1825)
• Cassis conica K. Martin, 1881 †