| Cylindrotheca gracilis (Bréb.) Grunow, 1882 |
| Cylindrotheca gracilis var. mayor Grunow, 1882 |
| Cymatonitzschia Simonsen, 1974 |
| Cymatonitzschia marina (Lewis) Simonsen, 1974 |
| Denticula Kütz., 1844 |
| Denticula elegans Kütz., 1844 |
| Denticula kuetzingii Grunow, 1860 |
| Denticula minor W. Greg., 1857 |
| Denticula nana W. Greg. |
| Denticula sinuata Thwaites, 1856 |
| Denticula subtilis Grunow, 1862 |
| Denticula tenuis Kütz., 1844 |
| Denticula tenuis var. genuina Grunow, 1881 |
| Denticula valida (Pedicino) Grunow, 1881 |
| Denticulopsis Simonsen, 1979 |
| Denticulopsis seminae (Simonsen & Kanaya) Simonsen, 1979 |
| Fragilariopsis Hust., 1913 |
| Fragilariopsis cylindrus (Grunow) Willi Krieg., 1954 |
| Fragilariopsis doliolus (G.C. Wall.) Medlin & P.A. Sims, 1993 |
| Fragilariopsis nana (Steem. Niels.) Paasche, 1961 |