Parent taxon: Graptolithina according to J. Maletz 2014
See also Bulman 1970 and Sepkoski 2002
Sister taxa: Acanthastida, Ascograptus, Camaroidea, Ceramograptus, Crinocaulis, Crustoidea, Cyclograptidae, Diplograptoidea, Dithecodendridae, Dithecodendrum, Dithecoidea, Graptoblasti, Graptolithus, Graptoloida, Graptoloidea, Graptovermida, Leveillites, Limpidograptus, Palmatophycus, Pilograptus, Rhabdopleuridae, Siryngotaenia, Stolonoidea, Thamnograptus, Trigonograptus, Tuboidea, Wimanicrustidae
Subtaxa: Acanthograptidae Aretograptus Cactograptus Chaunograptidae Chaunograptus Coelograptus Dendrograptidae
Ecology: stationary epifaunal suspension feeder
Distribution:
• Carboniferous of Ireland (1 collection)
• Devonian of Canada (6: New Brunswick, Nunavut, Quebec, Yukon), Colombia (1), Czechia (10), Germany (3), United States (1: New York)
• Silurian of Australia (1), Canada (3: Ontario, Québec), China (9), Czechia (12), Estonia (1), Sweden (1), the United Kingdom (2), United States (35: Alaska, Illinois, Indiana, Iowa, New York, Oklahoma, Wisconsin)
• Whiterockian of United States (1: Nevada)
• Klabava of Czechia (1)
• Arenig of Argentina (1), Australia (1), Bolivia (1), China (8), France (1), Morocco (1), the United Kingdom (1), United States (1: Montana)
• Dawan of China (3)
• Ordovician to Silurian of the Russian Federation (1)
• Canadian of United States (2: Idaho, Utah)
• Ordovician of Algeria (1), Argentina (5), Australia (1), Belarus (1), Bolivia (3), Canada (5: Manitoba, Newfoundland and Labrador, Ontario, Quebec), China (60), Czechia (3), Estonia (6), France (2), Latvia (3), Lithuania (8), Morocco (2), New Zealand (2), Norway (3), the Russian Federation (17), Spain (3), Sweden (2), the United Kingdom (3), United States (21: Minnesota, Montana, Nevada, New York, Ohio, Oklahoma, Pennsylvania, Utah, Vermont), Venezuela (1)
• Cambrian to Ordovician of Poland (1)
• Cambrian of Australia (1), Canada (11: British Columbia, Newfoundland, Northwest Territories), China (1), the Russian Federation (3), United States (5: Alaska, Montana, Wisconsin)
Total: 283 collections including 461 occurrences