Children (10 direct children, 13 direct and indirect children):
Arenicola marina
(tree size 2)
Lugworm
Arenicola loveni
(tree size 1)
Bloodworm
Arenicola glasselli
Arenicola brasiliensis
Arenicola cristata
Arenicola bombayensis
Arenicola defodiens
Pteroscolex
Arenicola dioscurica
Arenicola sudaustraliense