†subfamily Didymograpti Bulman 1970 (graptolite)

Pterobranchia - Graptoloidea - Dichograptidae

Technically ranked as a "section" grade, but ranking as subfamily because below family rank.

Full reference: O. M. B. Bulman. 1970. Graptolithina with sections on Enteropneusta and Pterobranchia (Second edition, revised and enlarged). Treatise on Invertebrate Paleontology V:V1-V163

Parent taxon: Dichograptidae according to O. M. B. Bulman 1970

Sister taxa: Clonograptus, Dichograpti, Dichograptinae, Dichograptus, Didymograptus, Etagraptus, Goniograpti, Loganograptus, Orthodichograptus, Schizograpti, Temnograpti, Tetragrapti

Subtaxa: Atopograptus Aulograptus Azygograptus Janograptus Maeandrograptus Oncograptus Parazygograptus Skiagraptus

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Ecology: passively mobile planktonic suspension feeder

Distribution:

• Whiterockian of Canada (2: Newfoundland and Labrador collections), United States (1: Texas)

• Yapeenian of New Zealand (5)

• Volkhov of Latvia (1), Lithuania (3)

• Dawan of China (3)

• Arenig of Bolivia (1), China (16), Morocco (1), Sweden (1)

• Klabava of the Czech Republic (1)

• Ningkuo of China (8)

• Ordovician of Argentina (4), Bolivia (1), China (4), the Czech Republic (1), Morocco (1), New Zealand (10), Norway (2), Spain (2), United States (1: Idaho)

• Tremadoc of China (1)

Total: 70 collections including 81 occurrences

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