| Name | Horstia Sieminska & Kwiecinska |
| Authorship | Sieminska & Kwiecinska |
| Rank | Genus |
| NomenclaturalStatus | NomLeg |
| Placed in | Incertae sedis |
| Contains | Horstia sp. |
| Remarks | Fossil Diatom; Type: H. renatae Sieminska & Kwiecinska; generic name in honor of: Prof. Horst Lange-Bertalot, German Diatomist |
| Citation | 24 Sep 2002 Acta Palaeobot. 42(1): 4 |