Genus
Xenocybe Owens, 1973
List of species
1. Xenocybe micrommata Owens, 1973 | Upper Ordovician
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Trilobita |
| Order | Proetida |
| Suborder | Proetoidea |
| Family | Proetidae |
| Genus | Astroproetus |
| Coniproetus | |
| Cyphoproetus | |
| Hedstroemia? | |
| Helokybe | |
| Prantlia | |
| Proetus | |
| Pulcherproetus | |
| Thebanaspis | |
| Warburgella | |
| Xenocybe | |
| Species | micrommata |