| Class | Order | Family | Genus | Species |
|---|---|---|---|---|
| Bacillariophyceae | 14 | 31 | 216 | 2486 |
| Biddulphiophyceae | 3 | 3 | 6 | 100 |
| Corethrophyceae | 1 | 2 | 3 | 9 |
| Coscinodiscophyceae | 4 | 6 | 25 | 121 |
| Fragilariophyceae | 7 | 9 | 62 | 416 |
| Leptocylindrophyceae | 1 | 1 | 2 | 14 |
| Melosirophyceae | 4 | 8 | 17 | 94 |
| Plagiogrammaphyceae | 3 | 4 | 19 | 86 |
| Striatellaphyceae | 1 | 1 | 2 | 3 |
| Thalassiosirophyceae | 13 | 23 | 89 | 1047 |