Genus
Parvitubus Skevington, 1963
Selection of related publications
Skevington, D. 1963. Graptolites from the Ontikan Limestones (Ordovician) of Öland, Sweden. I: Dendroidea, Tuboidea, Camaroidea, and Stolonoidea.  Bulletin of the Geological Institutions of the University of Uppsala   42,      1-62.
List of species
1. Parvitubus oelandicus (Bulman, 1936) | Middle Ordovician
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Hemichordata | 
| Class | Pterobranchia | 
| Subclass | Graptolithina | 
| Family | Cyclograptidae | 
| Genus | Calycotubus | 
| Conitubus | |
| Cyclograptus | |
| Dendrotubus | |
| Discograptus | |
| Dyadograptus | |
| Galeograptus | |
| Kozlowskitubus | |
| Multitubus | |
| Parvitubus | |
| Species | oelandicus | 
| Genus | Reticulograptus |