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
Platyzoa
Acanthocephala (Acanthocephalans)
Eoacanthocephala
Gyracanthocephala
Quadrigyridae
Pallisentinae
Children (2 direct children, 2 direct and indirect children):
Saccosentis pesteri
Saccosentis ophiocephali