Genus
Holograptus Holm, 1881
Klassificering
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Hemichordata |
| Class | Pterobranchia |
| Subclass | Graptolithina |
| Order | Graptoloidea |
| Suborder | Dichograptina |
| Family | Dichograptidae |
| Genus | Clonograptus |
| Dichograptus | |
| Herrmannograptus | |
| Holograptus | |
| Species | expansus |
| Genus | Loganograptus |
| Mimograptus | |
| Orthodichograptus | |
| Schizograptus | |
| Triaenograptus |