1. Subgenus Morio (Galeodea) Link, 1807 accepted as Galeodea Link, 1807 (unaccepted > superseded rank, Galeodea has priority over Morio)
   1. Species Morio (Galeodea) echinophora (Linnaeus, 1758) accepted as Galeodea echinophora (Linnaeus, 1758) (unaccepted > superseded combination)
   2. Species Morio (Galeodea) deformis Sacco, 1890 † (uncertain > unassessed)
   3. Species Morio (Galeodea) globostazzanensis Sacco, 1890 † (uncertain > unassessed)
   4. Species Morio (Galeodea) miocristata Sacco, 1890 † (uncertain > unassessed)
   5. Species Morio (Galeodea) oblongocebana Sacco, 1890 † (uncertain > unassessed)
   6. Species Morio (Galeodea) postcoronata Sacco, 1890 † (uncertain > unassessed)
   7. Species Morio (Galeodea) sconsioides Sacco, 1890 † (uncertain > unassessed)
   8. Species Morio (Galeodea) taurinensis Sacco, 1890 † (uncertain > unassessed)
   9. Species Morio (Galeodea) tauroglobosa Sacco, 1890 † (uncertain > unassessed)
   10. Species Morio (Galeodea) tauroherculea Sacco, 1890 † (uncertain > unassessed)
   11. Species Morio (Galeodea) tauropomum Sacco, 1890 † (uncertain > unassessed)
   12. Species Morio (Galeodea) tauropyrulata Sacco, 1890 † (uncertain > unassessed)
   13. Species Morio (Galeodea) tauroscalarata Sacco, 1890 † (uncertain > unassessed)
   14. Species Morio (Galeodea) turbinata Sacco, 1890 † (uncertain > unassessed)
2. Subgenus Morio (Galeodosconsia) Sacco, 1890 † accepted as Sconsia J. E. Gray, 1847 (unaccepted > junior subjective synonym)
   1. Species Morio (Galeodosconsia) striatula (Bellardi & Michelloti, 1840) † (uncertain > unassessed)
3. 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) †
4. Subgenus Morio (Sconsia) J. E. Gray, 1847 accepted as Sconsia J. E. Gray, 1847 (unaccepted > superseded rank)
   1. Species Morio (Sconsia) ambigua (Solander, 1766) † accepted as Athleta ambiguus (Solander, 1766) † (unaccepted > superseded combination)
   2. Species Morio (Sconsia) beyrichi (Michelotti, 1861) † accepted as Sconsia beyrichi (Michelotti, 1861) † (unaccepted > superseded combination)
   3. Species Morio (Sconsia) striata (Lamarck, 1816) † accepted as Sconsia grayi A. Adams, 1855 (unaccepted > junior objective synonym)
   4. Species Morio (Sconsia) tuberculatus Gabb, 1864 † accepted as Galeodea tuberculiformis G D. Hanna, 1924 † (unaccepted > junior homonym)
5. Species Morio abnormis Bayan, 1870 † accepted as Fusimorio carcarensis (Michelotti, 1847) †
6. Species Morio adriatica Coen, 1914 accepted as Galeodea echinophora (Linnaeus, 1758) (synonym)
7. Species Morio alcocki E. A. Smith, 1906 accepted as Galeodea alcocki (E. A. Smith, 1906) (original combination)
8. Species Morio cylindrica Coen, 1920 accepted as Galeodea rugosa (Linnaeus, 1771)
9. Species Morio echinophora [sic] accepted as Morio echinophorus (Linnaeus, 1758) accepted as Galeodea echinophora (Linnaeus, 1758) (incorrect gender ending)
10. Species Morio echinophorus (Linnaeus, 1758) accepted as Galeodea echinophora (Linnaeus, 1758)
11. Species Morio eurychilus Cossmann, 1889 † accepted as Galeodea eurychilus (Cossmann, 1889) † (unaccepted > superseded combination)
12. Species Morio granulosa Schepman, 1909 accepted as Galeodea leucodoma Dall, 1907
13. Species Morio lineata Schepman, 1909 accepted as Eudolium bairdii (A. E. Verrill & S. Smith, 1881) (junior subjective synonym)
14. Species Morio lineatus Schepman, 1909 accepted as Eudolium bairdii (A. E. Verrill & S. Smith, 1881) (synonym)
15. Species Morio mazzinoi Coen, 1928 accepted as Galeodea echinophora (Linnaeus, 1758)
16. Species Morio simplex Coen, 1920 accepted as Galeodea rugosa (Linnaeus, 1771)
17. Species Morio substriatus A. d'Orbigny, 1850 † accepted as Sconsia substriata (A. d'Orbigny, 1850) † (unaccepted > superseded combination)
18. Species Morio tyrrhenus (Gmelin, 1791) accepted as Galeodea rugosa (Linnaeus, 1771)
19. Subgenus Morio (Morionassa) Sacco, 1890 † (uncertain > unassessed)
    1. Species Morio (Morionassa) amplectens Sacco, 1890 † accepted as Morionassa amplectens (Sacco, 1890) † (unaccepted > superseded combination)
20. Species Morio planotecta (O. Meyer & Aldrich, 1886) † (uncertain > unassessed)
21. Species Morio tuberculatus † (uncertain > taxon inquirendum)

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