Pterobranchia - Dithecodendridae
Parent taxon: Graptolithina according to J. Maletz 2014
Sister taxa: Acanthastida, Ascograptus, Camaroidea, Ceramograptus, Crinocaulis, Crustoidea, Cyclograptidae, Dendroidea, Diplograptoidea, Dithecodendrum, Dithecoidea, Graptoblasti, Graptolithus, Graptoloida, Graptoloidea, Graptovermida, Leveillites, Limpidograptus, Palmatophycus, Pilograptus, Rhabdopleuridae, Siryngotaenia, Stolonoidea, Thamnograptus, Trigonograptus, Tuboidea, Wimanicrustidae
Subtaxa: Archaeolafoea Bulmanidendrum Dalyia Karasidendrum Ovetograptus Protodendrum Siberiodendrum Sibiriograptus Sotograptus Tarnagraptus
Ecology: passively mobile planktonic suspension feeder
Distribution:
• Cambrian of Australia (1 collection), Canada (6: British Columbia), United States (5: Pennsylvania, Utah)
Total: 12 collections including 15 occurrences