perekond
Haplograptus Ruedemann, 1933
Klassifikatsioon
| organismirühm | Biota |
| domeen | Eukaryota |
| riik | Animalia |
| hõimkond | Hemichordata |
| klass | Pterobranchia |
| alamklass | Graptolithina |
| selts | Rhabdopleuridae |
| perekond | Archaeolafoea |
| Chaunograptus | |
| Chitinodendron | |
| Epigraptus | |
| Haplograptus | |
| Kystodendron | |
| Palaeotuba | |
| Rhabdohydra | |
| Rhabdopleura | |
| Rhabdopleurites | |
| Rhabdopleuroides | |
| Sokoloviina | |
| Sphenoecium | |
| Stolonodendrum | |
| määratlemata | Cylindrotheca |