†order Crustoidea Bulman 1970 (graptolite)
Parent taxon: Graptolithina according to O. M. B. Bulman 1970
See also Sepkoski 2002
Sister taxa: Acanthastida, Ascograptus, Camaroidea, Ceramograptus, Crinocaulis, Cyclograptidae, Dendroidea, Diplograptoidea, Dithecodendridae, Dithecodendrum, Dithecoidea, Graptoblasti, Graptolithus, Graptoloida, Graptoloidea, Graptovermida, Leveillites, Limpidograptus, Palmatophycus, Pilograptus, Rhabdopleuridae, Siryngotaenia, Stolonoidea, Thamnograptus, Trigonograptus, Tuboidea, Wimanicrustidae
Subtaxa: Hormograptidae Ruedemannicrusta Urbanekicrusta Xenocyathus
Ecology: passively mobile planktonic suspension feeder
Distribution: there are no occurrences of Crustoidea in the database