Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Bilateria
Nephrozoa (Eubilateria)
Protostome (Protostomia)
Spiralia (Spiralians)
Lophotrochozoa
Sipuncula (Sipunculid worms)
Phascolosomatidea
Aspidosiphoniformes (18668315)
Children (1 direct children, 42 direct and indirect children):
Aspidosiphonidae
(tree size 41)