Children (24 direct children, 26 direct and indirect children):
Sipunculus angasoides
Sipunculus marcusi
Sipunculus nudus
Sipunculus phalloides
Sipunculus robustus
Sipunculus longipapillosus
Sipunculus lomonossovi
Sipunculus mundanus
Sipunculus polymyotus
Sipunculus indicus
Sipunculus corallicolus
Sipunculus rubens
Sipunculus clavatus
Sipunculus microrhynchus
Sipunculus echinorhynchus
Sipunculus zenkevitchi
Sipunculus macrorhynchus
Sipunculus saccatus
Sipunculus rufofimbriatus
Sipunculus norvegicus
Austrosiphon
Sipunculus
(tree size 2)
Phascolosomum
Phymosomum