Graptolithina
Subspecies

Phyllograptus angustifolius elongatus Bulman, 1931

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Classification
Organism groupBiota
KingdomAnimalia
PhylumHemichordata
ClassPterobranchia
SubclassGraptolithina
OrderGraptoloidea
SuborderDichograptina
FamilyPhyllograptidae
GenusPhyllograptus
Speciesangustifolius
Subspecieselongatus