Genus
Peiragraptus Strachan, 1954
Luokittelu
| Organism group | Biota |
| Domain | Eukaryota |
| Kingdom | Animalia |
| Phylum | Hemichordata |
| Class | Pterobranchia |
| Subclass | Graptolithina |
| Order | Graptoloidea |
| Suborder | Axonophora |
| Infraorder | Diplograptina |
| Subfamily | Peiragraptinae |
| Genus | Amplexograptus |
| Anticostia | |
| Eoglyptograptus | |
| Geniculograptus | |
| Hustedograptus | |
| Orthograptus | |
| Paraorthograptus | |
| Pararetiograptus | |
| Peiragraptus | |
| Rectograptus |