Species
Stomatograptus longus Obut, 1949
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Hemichordata |
| Class | Pterobranchia |
| Subclass | Graptolithina |
| Order | Graptoloidea |
| Suborder | Axonophora |
| Superfamily | Retiolitoidea |
| Family | Retiolitidae |
| Subfamily | Retiolitinae |
| Genus | Stomatograptus |
| Species | elegans |
| grandis | |
| longus |