Children (14 direct children, 26766 direct and indirect children):
Polychaeta
(tree size 19308)
Bristle worms
Clitellata
(tree size 7413)
Archianelida
Gephyrea
Machaeridia
(tree size 9)
Machaeridia (annelid)
Aclitellata
Aphanoneura
Pogonophora
(tree size 14)
Peronochaeta
(tree size 1)
Acanthobdellea
(tree size 6)
Branchiobdellea
Pennichnus
(tree size 1)
Hicetes
Chaetopoda