| Planothidium delicatulum (Kütz.) Round & L. Bukhtiyarova, 1996 |
| Planothidium dubium (Grunow) F. E. Round & Bukhtiyarova, 1996 |
| Planothidium ellipticum (Cleve) M.B. Edlund, 2001 |
| Planothidium frecuentissimum (Lange-Bert.) Round & L. Bukhtiyarova, 1996 |
| Planothidium frequentissimum (Lange-Bert.)Tseplik, Glushchenko, Maltsev & Kulikovskiy, 2025 |
| Planothidium grimmei (Krasske) I.W.Bishop & Spaulding, 2018 |
| Planothidium hauckianum (Grunow) Round & L. Bukhtiyarova, 1996 |
| Planothidium haynaldii (Schaarschm.) Lange-Bert., 1999 |
| Planothidium heidenii (Schulz-Danzig) Witkowski |
| Planothidium lanceolatum (Bréb.) Lange-Bert., 1999 |
| Planothidium lanceolatum var. omissum (Reimer) N.A. Andresen, Stoermer & Kreis, 2000 |
| Planothidium lemmermannii (Hust.) E.A. Morales, 2006 |
| Planothidium rostratoholarcticum Lange-Bert.& M. Bak, 2014 |
| Platessa Lange-Bert., 2004 |
| Platessa conspicua (Ant. Mayer) Lange-Bert., 2004 |
| Platessa holsatica (Hust.) Lange-Bert., 2004 |
| Platessa montana ((Krasske) Lange-Bert., 2004 |
| Psammothidium (Bukhtiyarova) Round, 1996 |
| Psammothidium buccula (Cholnoky) Bukhtiyarova, 1996 |
| Psammothidium chlidanos (Hohn & Hellerman) Lange-Bert., 1999 |