Genus
Xenotheca Eisenack, 1938
List of species
1. Xenotheca klinostoma Eisenack, 1938 | Middle Ordovician
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Hemichordata |
| Class | Pterobranchia |
| Subclass | Graptolithina |
| Family | Cysticamaridae |
| Genus | Bithecocamara |
| Camarotubus | |
| Cysticamara | |
| Erecticamara | |
| Flexicollicamara | |
| Graptocamara | |
| Tubicamara | |
| Xenotheca | |
| Species | klinostoma |