1. Species Trochonema etheridgei R. M. Johnston, 1888 †
2. Species Trochonema montgomerii (Etheridge, 1896) †
3. Species Trochonema trochonemoides (Ulrich, 1897) †
4. Species Trochonema umbilicata (J. Hall, 1847) †
5. Species Trochonema altum Ulrich & Scofield, 1897 † (uncertain > unassessed)
6. Species Trochonema bellulum Ulrich, 1897 † (uncertain > unassessed)
7. Species Trochonema beloitensis Whitfield, 1878 † (uncertain > unassessed)
8. Species Trochonema eccentricum Ulrich, 1897 † (uncertain > unassessed)
9. Species Trochonema emacerata J. Hall & Whitfield, 1872 † (uncertain > unassessed)
10. Species Trochonema fragile Ulrich & Scofield, 1897 † (uncertain > unassessed)
11. Species Trochonema madisonense Ulrich, 1897 † (uncertain > unassessed)
12. Species Trochonema muricatum Lindström, 1884 † (uncertain > unassessed)
13. Species Trochonema rectilatera J. Hall & Whitfield, 1872 † (uncertain > unassessed)
14. Species Trochonema retrorsum Ulrich & Scofield, 1897 † (uncertain > unassessed)
15. Species Trochonema rugosum Ulrich & Scofield, 1897 † (uncertain > unassessed)
16. Species Trochonema subcrassum Ulrich & Scofield, 1897 † (uncertain > unassessed)
17. Species Trochonema turritum Lindström, 1884 † (uncertain > unassessed)
18. Species Trochonema vagrans Ulrich & Scofield, 1897 † (uncertain > unassessed)
19. Species Trochonema yandellana J. Hall & Whitfield, 1872 † (uncertain > unassessed)
20. Subgenus Trochonema (Eunema) Salter, 1859 † accepted as Eunema Salter, 1859 † (unaccepted > superseded rank)
    1. Species Trochonema (Eunema) arctatum Ulrich, 1897 † (uncertain > unassessed)
    2. Species Trochonema (Eunema) obsoletum Ulrich, 1897 † (uncertain > unassessed)
    3. Species Trochonema (Eunema) robbinsi Ulrich & Scofield, 1897 † (uncertain > unassessed)
    4. Species Trochonema (Eunema) salteri Ulrich & Scofield, 1897 † (uncertain > unassessed)
    5. Species Trochonema (Eunema) simile Ulrich & Scofield, 1897 † (uncertain > unassessed)
    6. Species Trochonema (Eunema) nitidum Ulrich, 1897 † accepted as Slehoferia nitida (Ulrich, 1897) † (unaccepted > superseded combination)
21. Species Trochonema excavatum Barrande, 1903 † accepted as Slehoferia excavata (Barrande, 1903) † (unaccepted > superseded combination)

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