Class Pterobranchia Lankester 1877 (pterobranch)
PaleoDB taxon number: 33521
Parent taxon: Hemichordata according to C. E. Mitchell et al. 2013
Sister taxon: Enteropneusta
Subtaxa: Cephalodiscida, Graptolithina
PaleoDB taxon number: 33521
Parent taxon: Hemichordata according to C. E. Mitchell et al. 2013
Sister taxon: Enteropneusta
Subtaxa: Cephalodiscida, Graptolithina