Species
Tetragraptus gracilis Monsen, 1937
Synonyymit
1937 Tetragraptus gracilis sp. n. — Monsen , pp. 164, fig. 4:6
Aiheeseen liittyvät julkaisut
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Hemichordata |
| Class | Pterobranchia |
| Subclass | Graptolithina |
| Order | Graptoloidea |
| Suborder | Dichograptina |
| Family | Tetragraptidae |
| Genus | Tetragraptus |
| Species | amii |
| askerensis | |
| astericus | |
| bigsbyi | |
| cor | |
| crucifer | |
| gracilis | |
| headi | |
| krapperupensis | |
| longus | |
| mobergi | |
| norvegicus | |
| phyllograptoides | |
| pseudobigsbyi | |
| quadribrachiatus | |
| reclinatus | |
| serra | |
| spinosus | |
| taraxacum | |
| toernquisti |
Levinneisyys ja viitteet
- Ulst et al., 1982 Lower Ordovician