1. Subgenus Orthogibbus (Gibbulinopsis) Germain, 1919 accepted as Gibbulinopsis Germain, 1919 (original rank)
   1. Species Orthogibbus (Gibbulinopsis) pupulus (Deshayes, 1863) accepted as Gibbulinopsis pupula (Deshayes, 1863)
   2. Species Orthogibbus (Gibbulinopsis) turgidulus (Deshayes, 1863) accepted as Gonospira turgidula (Deshayes, 1863)
   3. Species Orthogibbus (Gibbulinopsis) uvulus (Deshayes, 1863) accepted as Gonospira uvula (Deshayes, 1863)
2. Subgenus Orthogibbus (Gonidomus) Swainson, 1840 accepted as Gonidomus Swainson, 1840
   1. Species Orthogibbus (Gonidomus) pagodus (A. Férussac, 1821) accepted as Gonidomus concamerata (W. Wood, 1828)
3. Subgenus Orthogibbus (Orthogibbus) Germain, 1919 accepted as Gonospira Swainson, 1840
   1. Species Orthogibbus (Orthogibbus) adamsi accepted as Gonospira adamsiana (G. Nevill & H. Nevill, 1871) (misspelling of specific epithet)
   2. Species Orthogibbus (Orthogibbus) bacillus (L. Pfeiffer, 1856) accepted as Gonospira bacillus (L. Pfeiffer, 1856)
   3. Species Orthogibbus (Orthogibbus) bourguignati (Deshayes, 1863) accepted as Gonospira bourguignati (Deshayes, 1863)
   4. Species Orthogibbus (Orthogibbus) brevis (Morelet, 1867) accepted as Gonospira brevis (Morelet, 1867) (unaccepted > superseded combination)
   5. Species Orthogibbus (Orthogibbus) calliferus (Morelet, 1860) accepted as Gonospira callifera (Morelet, 1860)
   6. Species Orthogibbus (Orthogibbus) chloris (Crosse, 1873) accepted as Gonospira chloris Crosse, 1873
   7. Species Orthogibbus (Orthogibbus) cylindrellus (H. Adams, 1868) accepted as Gonospira cylindrella (H. Adams, 1868)
   8. Species Orthogibbus (Orthogibbus) deshayesi (H. Adams, 1868) accepted as Gonospira deshayesi (H. Adams, 1868)
   9. Species Orthogibbus (Orthogibbus) duponti [sic] accepted as Gonospira dupontiana (G. Nevill, 1881) (unaccepted > misspelling - incorrect subsequent spelling)
   10. Species Orthogibbus (Orthogibbus) farinosus (Küster, 1847) accepted as Gonospira mauritiana (Morelet, 1860)
   11. Species Orthogibbus (Orthogibbus) funiculus (L. Pfeiffer, 1842) accepted as Gonospira funiculus (L. Pfeiffer, 1842)
   12. Species Orthogibbus (Orthogibbus) helodes (Morelet, 1875) † accepted as Gonospira helodes (Morelet, 1875) (unaccepted > superseded combination)
   13. Species Orthogibbus (Orthogibbus) holostomus (Morelet, 1860) accepted as Gonospira holostoma (Morelet, 1860)
   14. Species Orthogibbus (Orthogibbus) majusculus (Morelet, 1878) accepted as Gonospira majuscula (Morelet, 1878)
   15. Species Orthogibbus (Orthogibbus) modiolinus (Morelet, 1867) accepted as Gonospira madgei (Kennard, 1943) (based on junior primary homonym)
   16. Species Orthogibbus (Orthogibbus) modiolus (A. Férussac, 1821) accepted as Gonospira modiola (A. Férussac, 1821)
   17. Species Orthogibbus (Orthogibbus) mondraini H. Adams, 1868 accepted as Gonospira mondraini (H. Adams, 1868)
   18. Species Orthogibbus (Orthogibbus) nevilli (H. Adams, 1867) accepted as Gonospira nevilli (H. Adams, 1867)
   19. Species Orthogibbus (Orthogibbus) obesus (Kobelt, 1904) accepted as Gonospira obesa (Kobelt, 1904)
   20. Species Orthogibbus (Orthogibbus) palangulus accepted as Gonospira palanga (R. P. Lesson, 1830) (error for palangus)
   21. Species Orthogibbus (Orthogibbus) palangulus (A. Férussac, 1821) accepted as Gonospira teres (L. Pfeiffer, 1856) (based on nomen nudum)
   22. Species Orthogibbus (Orthogibbus) productus (H. Adams, 1868) accepted as Gonospira producta (H. Adams, 1868)
   23. Species Orthogibbus (Orthogibbus) striaticostus (Morelet, 1866) accepted as Gonospira striaticosta (Morelet, 1866)
4. Subgenus Orthogibbus (Plicadomus) Swainson, 1840 accepted as Plicadomus Swainson, 1840
   1. Species Orthogibbus (Plicadomus) newtoni (H. Adams, 1867) accepted as Plicadomus newtoni (H. Adams, 1867)
   2. Species Orthogibbus (Plicadomus) sulcatus (O. F. Müller, 1774) accepted as Plicadomus sulcata (O. F. Müller, 1774)
5. Species Orthogibbus muelleri (Morelet, 1875) accepted as Plicadomus sulcata (O. F. Müller, 1774)
6. Species Orthogibbus superbus Pickford, 2019 † accepted as Gonospira superba (Pickford, 2019) † (unaccepted > superseded combination, Orthogibbus is considered a junior synonym of Gonospira)

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