Genus
Didymograptellus Cooper et Fortey, 1982
Aiheeseen liittyvät julkaisut
Obut, A. M. 1960. Correlation of some parts of Estonian Ordovician and Silurian deposits according to graptolites. ENSV TA Geoloogia Instituudi Uurimused V, 143-157.
List of species
1. Didymograptellus bifidus (Hall, 1865) | Kunda Stage
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Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Hemichordata |
| Class | Pterobranchia |
| Subclass | Graptolithina |
| Order | Graptoloidea |
| Suborder | Dichograptina |
| Family | Pterograptidae |
| Genus | Didymograptellus |
| Species | bifidus |
| Genus | Pseudobryograptus |
| Pterograptus | |
| Xiphograptus | |
| Yutagraptus |