Pterobranchia - Graptoloidea - Didymograptidae
Parent taxon: Graptoloidea according to J. Maletz and M. Slovacek 2013
See also Lo Valvo et al. 2020
Sister taxa: Apiograptus, Arienigraptus, Arnheimograptus, Axonophora, Bergstroemograptus, Bryograptidae, Crinitograptus, Dichograptacea, Dichograptina, Didymograptina, Dimorphograptoides, Eisenackograptus, Eoglyptograptus, Euclimacograptus, Exigraptus, Glossograptina, Graptodendroidina, Hirsutograptus, Joamgsjamotes, Kinnegraptidae, Laxograptus, Lenzograptus, Metabrograptus, Monograptina, Neocolonograptus, Neocucullograptus, Neodicellograptus, Neolobograptus, Parapetalolithis, Pararetiograptus, Plectodinemagraptus, Pseudamplexograptus, Pseudoisograptus, Pseudomonoclimacis, Pseudoplectograptus, Pseudorthograptus, Rivagraptus, Semiplectograptus, Sinograpta, Sinograptina, Sinoreteograptus, Stromatograptus, Uncinatograptus, Urbanekograptus, Virgellina
Subtaxa: Aulograptus Baltograptus Cymatograptus Expansograptus
Ecology: passively mobile planktonic suspension feeder
Distribution:
• Arenig of Argentina (4 collections), Australia (1), Bolivia (1), Canada (6: Yukon), France (1)
• Arenigian of Argentina (7)
• Ordovician of Argentina (12), Australia (1), Bolivia (1), Canada (1: British Columbia), Chile (1), China (1), Kazakhstan (1), Latvia (1), Lithuania (3), Morocco (2), New Zealand (5), the Russian Federation (19), Spain (3)
Total: 71 collections including 123 occurrences