†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
Ecology: passively mobile planktonic suspension feeder
Distribution: