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), the Czech Republic (10), Germany (3), United States (1: New York)
• Silurian of Australia (1), Canada (3: Ontario, Québec), China (9), the Czech Republic (12), Sweden (1), the United Kingdom (2), United States (35: Alaska, Illinois, Indiana, Iowa, New York, Oklahoma, Wisconsin)
• Whiterockian of United States (1: Nevada)
• Arenig of Argentina (1), Australia (1), Bolivia (1), China (8), France (1), Morocco (1), United States (1: Montana)
• Klabava of the Czech Republic (1)
• Dawan of China (3)
• Ordovician to Silurian of the Russian Federation (1)
• Ordovician of Algeria (1), Argentina (2), Australia (1), Belarus (1), Canada (4: Manitoba, Ontario, Quebec), China (13), the Czech Republic (2), Estonia (6), France (1), Latvia (3), Lithuania (8), Morocco (1), New Zealand (2), Norway (3), the Russian Federation (9), Spain (3), Sweden (1), the United Kingdom (3), United States (15: Minnesota, Montana, Nevada, New York, Ohio, Oklahoma, Pennsylvania, Utah), Venezuela (1)
• Canadian of United States (2: Idaho, Utah)
• Tremadoc of Argentina (3), Bolivia (3), Canada (1: Newfoundland and Labrador), China (47), the Czech Republic (1), France (1), Morocco (1), the Russian Federation (6), Sweden (1), United States (6: Montana, New York, Utah, Vermont)
• Delamaran of Canada (4: British Columbia)
• Cambrian of Australia (1), Canada (7: British Columbia, Newfoundland, Northwest Territories), China (1), Poland (1), the Russian Federation (4), United States (5: Alaska, Montana, Wisconsin)
Total: 280 collections including 457 occurrences