| Encyonema minutum (Hilse) D.G. Mann, 1990 |
| Encyonema muelleri (Hustedt) D.G. Mann, 1990 |
| Encyonema norvegicum (Grunow) Mayer, 1947 |
| Encyonema perpusillum (A. Cleve) D.G. Mann, 1990 |
| Encyonema prostratum (Berk.) Kütz., 1844 |
| Encyonema silesiacum (Bleisch) D.G. Mann, 1990 |
| Encyonopsis K. Krammer, 1997 |
| Encyonopsis microcephala (Grunow) Krammer, 1997 |
| Navicymbula Krammer, 2003 |
| Navicymbula pusilla (Grunow) Krammer, 2003 |
| Placoneis Mereschk., 1903 |
| Placoneis amphibola (Cleve) E. J. Cox, 2003 |
| Placoneis clementis (Grunow) E. J. Cox, 1987 |
| Placoneis elginensis (Gregory) E.J. Cox, 1988 |
| Placoneis gastrum (Ehrenb.) Mereschk., 1903 |
| Placoneis hambergii (Hust.) K. Bruder, 2007 |