| Conticribra Stachura-Suchoples & Williams, 2009 |
| Conticribra weissflogii (Grunow) Stachura-Suchoples & Williams, 2009 |
| Cyclostephanos Round ex Theriot, Håk., Kociolek, Round & Stoermer, 1987 |
| Cyclostephanos dubius (Hustedt) Round, 1987 |
| Cyclotella (Kütz.) Bréb., 1838 |
| Cyclotella antiqua W. Sm., 1853 |
| Cyclotella atomus Hust., 1937 |
| Cyclotella bodanica Grunow, 1878 |
| Cyclotella caspia Grunow, 1878 |
| Cyclotella catenata (Brun) Bachmann, 1911 |
| Cyclotella choctawhatcheeana A.K.S. Prasad, 1990 |
| Cyclotella comta (Ehrenb.) Håk., 2002 |
| Cyclotella desikacharyi A.K.S. Prasad, 2006 |
| Cyclotella kuetzingiana Thwaites, 1848 |
| Cyclotella litoralis Lange & Syvertsen, 1989 |
| Cyclotella meneghiniana Kütz., 1844 |
| Cyclotella ocellata Pant., 1901 |
| Cyclotella operculata (C. Agardh) Bréb., 1838 |
| Cyclotella pseudostelligera Hustedt, 1939 |
| Cyclotella quillensis Bailey, 1924 |