1. Subgenus Taras (Taras) Risso, 1826 accepted as Taras Risso, 1826 (unaccepted > superseded combination)
   1. Species Taras (Taras) gravis Kogan, 1938 † accepted as Diplodonta ferruginata Makiyama, 1926 † (unaccepted > junior subjective synonym)
2. Species Taras gabbi (Dall, 1900) † accepted as Phlyctiderma gabbi (Dall, 1900) †
3. Species Taras harfordi (F. M. Anderson, 1905) accepted as Felaniella harfordi (F. M. Anderson, 1905) † (unaccepted > superseded combination)
4. Species Taras inezensis Hertlein & A. M. Strong, 1947 accepted as Timothynus inezensis (Hertlein & A. M. Strong, 1947) (original combination)
5. Species Taras notata (Dall & C. T. Simpson, 1901) accepted as Diplodonta notata Dall & C. T. Simpson, 1901
6. Species Taras nucleiformis (W. Wagner, 1840) † accepted as Diplodonta nucleiformis (W. Wagner, 1840) † (unaccepted > superseded combination)
7. Species Taras orbellus (A. Gould, 1851) † accepted as Zemysina orbella (A. Gould, 1851) (unaccepted > superseded combination)
8. Species Taras parilis (Conrad, 1848) † accepted as Felaniella parilis (Conrad, 1848) † (unaccepted > superseded combination)
9. Species Taras punctata (Say, 1822) accepted as Diplodonta punctata (Say, 1822)
10. Species Taras rotundatus (Montagu, 1803) accepted as Diplodonta rotundata (Montagu, 1803) (unaccepted > superseded combination)
11. Species Taras semiaspera (R. A. Philippi, 1836) accepted as Phlyctiderma semiasperum (R. A. Philippi, 1836) (unaccepted > superseded combination)
12. Species Taras subtrigonula (Zhizhchenko, 1936) † accepted as Diplodonta trigonula Bronn, 1831 † (unaccepted > junior subjective synonym)
13. Species Taras trigonula (Bronn, 1831) † accepted as Diplodonta trigonula Bronn, 1831 † (unaccepted > superseded combination)
14. Species Taras usta (A. Gould, 1861) accepted as Felaniella usta (A. Gould, 1861) (unaccepted > superseded combination)

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