Clade Pleistoannelida Struck 2011 (worm)
Parent taxon: Annelida according to Z.F. Zhang et al. 2023
Sister taxa: Amphinomea, Anellidia, Aphanoneura, Burgessochaeta, Chaetopoda, Clitellata, Ctenoscolex, Insolicorypha, Myzostomaria, Palaeoannelida, Peronochaeta, Polychaeta, Sabelliditida, Skolekichnus, Stephanoscolex, Terebellina, Thartharella, Tubulostium, Vermiforafacta
Subtaxa: Sedentaria