1. Species Straparollus brevis Yoo, 1994 †
2. Species Straparollus devonoaltus Heidelberger & Bandel, 1999 †
3. Species Straparollus dionysii Montfort, 1810 †
4. Species Straparollus laevis (Archiac & Verneuil, 1842) †
5. Species Straparollus planiformis Heidelberger & Bandel, 1999 †
6. Subgenus Straparollus (Euomphalus) J. De C. Sowerby, 1814 † accepted as Euomphalus J. De C. Sowerby, 1814 † (unaccepted rank)
   1. Species Straparollus (Euomphalus) cornudanus Shumard, 1859 † accepted as Euomphalus cornudanus (Shumard, 1859) † (unaccepted combination)
   2. Species Straparollus (Euomphalus) intermedius M. Gordon & Yochelson, 1983 † accepted as Euomphalus intermedius (M. Gordon & Yochelson, 1983) † (original combination)
   3. Species Straparollus (Euomphalus) kaibabensis Chronic, 1952 † accepted as Euomphalus kaibabensis Chronic, 1952 † (unaccepted combination)
   4. Species Straparollus (Euomphalus) marginatiformis B. K. Likharev, 1967 † accepted as Euomphalus marginatiformis (B. K. Likharev, 1967) † (basionym)
   5. Species Straparollus (Euomphalus) marginatus (Eichwald, 1860) † accepted as Euomphalus marginatus Eichwald, 1860 † (unaccepted combination)
   6. Species Straparollus (Euomphalus) moniliferus (Romanovsky, 1890) † accepted as Euomphalus moniliferus Romanovsky, 1890 †
   7. Species Straparollus (Euomphalus) obtusus (J. Hall, 1858) † accepted as Euomphalus obtusus J. Hall, 1858 † (unaccepted > superseded combination)
   8. Species Straparollus (Euomphalus) peskensis Mazaev, 1994 † accepted as Euomphalus peskensis (Mazaev, 1994) † (basionym)
   9. Species Straparollus (Euomphalus) pirochiensis Mazaev, 1994 † accepted as Euomphalus pirochiensis (Mazaev, 1994) † (basionym)
   10. Species Straparollus (Euomphalus) pernodosus Meek & Worthen, 1870 † (uncertain > unassessed)
   11. Species Straparollus (Euomphalus) subquadratus Meek & Worthen, 1870 † (uncertain > unassessed)
7. Subgenus Straparollus (Leptomphalus) Yochelson, 1956 † accepted as Leptomphalus Yochelson, 1956 † (unaccepted > superseded rank)
   1. Species Straparollus (Leptomphalus) micidus Yochelson, 1956 † accepted as Leptomphalus micidus (Yochelson, 1956) † (unaccepted > superseded combination)
8. Subgenus Straparollus (Straparollus) Montfort, 1810 † accepted as Straparollus Montfort, 1810 † (unaccepted > superseded rank)
   1. Species Straparollus (Straparollus) dionysii Montfort, 1810 † accepted as Straparollus dionysii Montfort, 1810 †
9. Species Straparollus altus A. d'Orbigny, 1853 † accepted as Colpomphalus altus (A. d'Orbigny, 1853) † (unaccepted > superseded combination)
10. Species Straparollus convolutus de Koninck, 1881 † accepted as Straparollus dionysii Montfort, 1810 † (unaccepted > junior subjective synonym)
11. Species Straparollus cornudanus Shumard, 1859 † accepted as Euomphalus cornudanus (Shumard, 1859) † (basionym)
12. Species Straparollus lens Gabb, 1864 † accepted as Polygyroidea lens (Gabb, 1864) † (unaccepted > superseded combination, not a marine species)
13. Species Straparollus minima Kirchner, 1915 † accepted as Archaeosphera minima (Kirchner, 1915) † (unaccepted > superseded combination)
14. Species Straparollus nudus Piette, 1855 † accepted as Crossostoma nudum (Piette, 1855) † (unaccepted > superseded combination)
15. Species Straparollus placidus de Koninck, 1881 † accepted as Straparollus dionysii Montfort, 1810 † (unaccepted > junior subjective synonym)
16. Species Straparollus wachtbergi Kirchner, 1915 † accepted as Archaeosphera wachtbergi (Kirchner, 1915) † (unaccepted > superseded combination)
17. Species Straparollus batangensis Y.-T. Pan, 1978 † (uncertain > unassessed)
18. Species Straparollus scalatus Cossmann, 1885 † (uncertain > unassessed)
19. Species Straparollus similis Meek & Worthen, 1861 † (uncertain > unassessed)
20. Species Straparollus tianshanensis X.-D. Qiao, 1983 † (uncertain > unassessed)
21. Species Straparollus tongziensis Y.-T. Pan, 1978 † (uncertain > unassessed)

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