†subfamily Peiragraptinae Jaanusson 1960 (graptolite)

Pterobranchia - Graptoloidea - Diplograptidae

Parent taxon: Orthograptidae according to C. E. Mitchell 1987

Sister taxa: Amplexograptus, Anticostia, Cephalograptus, Corynoides, Diplograptinae, Diplograptus, Levisograptus, Orthograptinae, Parareteograptus, Rectograptus

Subtaxa: Geniculograptus

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Ecology: passively mobile planktonic suspension feeder

Distribution:

• Ordovician of Argentina (1 collection), United States (7: Kentucky, Michigan, New York)

Total: 8 collections each including a single occurrence

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