Genus
Gravensia Schallreuter, 2000
List of species
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Crustacea |
| Superclass | Oligostraca |
| Class | Ostracoda |
| Subclass | Podocopa |
| Order | Palaeocopida |
| Suborder | Beyrichicopina |
| Binodicopa | |
| Superfamily | Aechminacea |
| Family | Circulinidae |
| Genus | Arpaschmidtella |
| Circulina | |
| Circulinella | |
| Craspedopyxion | |
| Easchmidtella | |
| Gravensia | |
| Species | gravensteinensis |
| Genus | Kinnekullea |
| Ledanina | |
| Orechina | |
| Parapyxion | |
| Paraschmidtella | |
| Pedomphalella | |
| Pyxion | |
| Vogdesella |