| Parent | Category | Figures | |
|---|---|---|---|
| 1 | Triviella | costata | 9 |
| 2 | Triviella | ovulata | 7 |
| 3 | Triviella | aperta | 4 |
| 4 | Triviella | neglecta | 4 |
| 5 | Triviella | lowtheri | 2 |
| 6 | Triviella | insolita | 2 |
| 7 | Triviella | procella | 1 |
| 8 | Triviella | millardi | 1 |
| 9 | Triviella | virginiae | 1 |
| 10 | Triviella | caelatura | 1 |
| 11 | Triviella | austrafricana | 1 |
| 12 | Triviella | lorenzi | 1 |
| 13 | Triviella | magnidentata | 1 |
| 14 | Triviella | phalacra | 1 |
| 15 | Triviella | pseudovulata | 1 |
| 16 | Triviella | rubra | 1 |
| 17 | Triviella | verhoefi | 1 |
| 18 | Triviella | williami | 1 |
| 19 | Triviella | calvariola | 1 |
| 20 | Triviella | debruini | 1 |
| 21 | Triviella | immelmani | 1 |
| 22 | Triviella | khanya | 1 |
| 23 | Triviella | sanctispiritus | 1 |