Species
Glossograptus holmi Bulman, 1931
Klassificering
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Hemichordata |
| Class | Pterobranchia |
| Subclass | Graptolithina |
| Order | Graptoloidea |
| Suborder | Glossograptina |
| Family | Glossograptidae |
| Genus | Glossograptus |
| Species | hincksii |
| holmi | |
| ovatus |