Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Bilateria
Nephrozoa (Eubilateria)
Protostome (Protostomia)
Chaetognatha (Arrow worms)
Sagittoidea
Aphragmophora
Sagittidae
Children (1 direct children, 1 direct and indirect children):
Bathysagitta scaphicephala