1. Subgenus Morio (Morio) Montfort, 1810 accepted as Galeodea Link, 1807
   1. Species Morio (Morio) pamotanensis K. Martin, 1899 † accepted as Galeodea pamotanensis (K. Martin, 1899) †
2. Subgenus Morio (Sconsia) J. E. Gray, 1847 accepted as Sconsia J. E. Gray, 1847 (unaccepted > superseded rank)
   1. Species Morio (Sconsia) tuberculatus Gabb, 1864 † accepted as Galeodea tuberculiformis G. D. Hanna, 1924 † (unaccepted > junior homonym)
3. Species Morio abnormis Bayan, 1870 † accepted as Fusimorio carcarensis (Michelotti, 1847) †
4. Species Morio adriatica Coen, 1914 accepted as Galeodea echinophora (Linnaeus, 1758) (synonym)
5. Species Morio alcocki E. A. Smith, 1906 accepted as Galeodea alcocki (E. A. Smith, 1906) (original combination)
6. Species Morio cylindrica Coen, 1920 accepted as Galeodea rugosa (Linnaeus, 1771)
7. Species Morio echinophora [sic] accepted as Morio echinophorus (Linnaeus, 1758) accepted as Galeodea echinophora (Linnaeus, 1758) (incorrect gender ending)
8. Species Morio echinophorus (Linnaeus, 1758) accepted as Galeodea echinophora (Linnaeus, 1758)
9. Species Morio eurychilus Cossmann, 1889 † accepted as Galeodea eurychilus (Cossmann, 1889) † (unaccepted > superseded combination)
10. Species Morio granulosa Schepman, 1909 accepted as Galeodea leucodoma Dall, 1907
11. Species Morio lineata Schepman, 1909 accepted as Eudolium bairdii (A. E. Verrill & S. Smith, 1881) (junior subjective synonym)
12. Species Morio lineatus Schepman, 1909 accepted as Eudolium bairdii (A. E. Verrill & S. Smith, 1881) (synonym)
13. Species Morio mazzinoi Coen, 1928 accepted as Galeodea echinophora (Linnaeus, 1758)
14. Species Morio simplex Coen, 1920 accepted as Galeodea rugosa (Linnaeus, 1771)
15. Species Morio substriatus A. d'Orbigny, 1850 † accepted as Sconsia substriata (A. d'Orbigny, 1850) † (unaccepted > superseded combination)
16. Species Morio tyrrhenus (Gmelin, 1791) accepted as Galeodea rugosa (Linnaeus, 1771)
17. Subgenus Morio (Morionassa) Sacco, 1890 † (uncertain > unassessed)
    1. Species Morio (Morionassa) amplectens Sacco, 1890 † accepted as Morionassa amplectens (Sacco, 1890) † (unaccepted > superseded combination)
18. Species Morio planotecta (O. Meyer & Aldrich, 1886) † (uncertain > unassessed)
19. Species Morio tuberculatus † (uncertain > taxon inquirendum)

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