Parent taxon: Hemichordata according to J. J. Sepkoski 2002

Sister taxa: Enteropneusta, Pterobranchia

Subtaxa: Acanthastus, Aellograptus, Archaeodictyota, Ascograptus, Cactograptus, Camaroidea, Ceramograptus, Chaunograptus, Coelograptus, Crinocaulis, Crustoidea, Dendroidea, Dithecodendrum, Graptoblastoides, Graptoblastus, Graptoloidea, Haplograptus, Leveillites, Mastigograptus, Palmatophycus, Pilograptus, Siberiodendrum, Siberiograptus, Siryngotaenia, Stolonoidea, Trigonograptus, Tuboidea

View classification

Ecology: passively mobile planktonic suspension feeder