Family
Cryptograptidae Hadding, 1915
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Hemichordata |
| Class | Pterobranchia |
| Subclass | Graptolithina |
| Order | Graptoloidea |
| Suborder | Axonophora |
| Dichograptina | |
| Glossograptina | |
| Graptodendroidina | |
| Family | Cryptograptidae |
| Cyrtograptidae | |
| Dicaulograptidae | |
| Glyptograptidae | |
| Linograptidae | |
| Genus | Corymborgaptus |