Children (7 direct children, 2737 direct and indirect children):
Siboglinidae
(tree size 249)
Serpulidae
(tree size 1305)
Sabellidae
(tree size 896)
Feather duster worms
Sabellariidae
(tree size 168)
Oweniidae
(tree size 73)
Spirorbidae
(tree size 2)
Fabriciidae
(tree size 37)