Parent taxon: Graptoloidea according to J. Maletz et al. 2018
See also Lo Valvo et al. 2020 and Maletz 2014
Sister taxa: Apiograptus, Arienigraptus, Arnheimograptus, Axonophora, Bergstroemograptus, Bryograptidae, Crinitograptus, Dichograptacea, Didymograptidae, 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: Dichograptidae Phyllograptidae Pterograptidae Tetragraptidae
Ecology: passively mobile planktonic suspension feeder
Distribution:
• Dobrotivian of France (1 collection), Portugal (3), Spain (1)
• Whiterockian of Canada (3: Newfoundland and Labrador), United States (5: Texas, Utah)
• Chazyan of United States (2: Utah)
• Billingen of the Russian Federation (1)
• Arenig of Argentina (3), Australia (22), Bolivia (8), Canada (21: Newfoundland and Labrador, Yukon), Chile (1), China (87), France (4), Morocco (1), Norway (3), Spain (1), Sweden (3), the United Kingdom (3), United States (3: Alaska, Montana, Nevada)
• Arenigian of Argentina (7), Canada (2: Northwest Territories), United States (2: Alaska)
• Klabava of the Czech Republic (2), France (1)
• Dawan of China (8)
• Ningkuo of China (20)
• Ordovician of Argentina (25), Australia (9), Bolivia (6), Canada (21: Newfoundland, Newfoundland and Labrador, Northwest Territories, Northwest Terrorities, Ontario, Quebec, Yukon), Chile (1), China (57), Colombia (1), the Czech Republic (1), Estonia (1), France (7), Iran (3), Lithuania (8), Morocco (10), New Zealand (46), Norway (5), Peru (2), Portugal (2), the Russian Federation (46), Saudi Arabia (2), Spain (15), Sweden (4), the United Kingdom (5), United States (39: Alaska, British Columbia, California, Idaho, Nevada, New York, Texas, Utah), Venezuela (1)
• Canadian of Canada (1: Northwest Territories), United States (3: Nevada, Utah)
• Ibexian of United States (2: California)
Total: 541 collections including 1214 occurrences