Parent taxon: Graptoloidea according to O. M. B. Bulman 1970
See also Toro 1993 and Vento et al. 2012
Sister taxa: Apiograptus, Arienigraptus, Arnheimograptus, Axonophora, Bergstroemograptus, Bryograptidae, Crinitograptus, Dichograptacea, Dichograptina, Didymograptidae, 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: Abrograptidae Corynoididae Nemagraptidae
Ecology: passively mobile planktonic suspension feeder
Distribution:
• Ordovician of Argentina (2 collections), Canada (4: British Columbia, Northwest Territories and Yukon, Yukon), China (17), New Zealand (10), Norway (1), the Russian Federation (3), Sweden (1), United States (12: Alaska, California, Idaho, New York), Venezuela (1)
Total: 51 collections including 63 occurrences