Graptolithina
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
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References based on distribution