| Onceroxenus | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | Pancrustacea |
| Class: | Tantulocarida |
| Family: | Onceroxenidae Huys, 1991 |
| Genus: | Onceroxenus Boxshall & Lincoln, 1987 |
Onceroxenus is a genus of crustaceans belonging to the monotypic family Onceroxenidae.
The species of this genus are found in Western Europe.
Species:
- Onceroxenus birdi Boxshall & Lincoln, 1987
- Onceroxenus curtus Boxshall & Lincoln, 1987
