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
Mollusca (Molluscs)
Bivalvia
Protobranchia
Nuculaniformii
Nuculanida (Nuculanoida)
Nuculanoidea
Isoarcidae
Children (3 direct children, 3 direct and indirect children):
Isoarca agassizii
Isoarca helvetica
Isoarca ledonica