Related how?

Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Bilateria
Deuterostome (Deuterostomia)
Chordata (Chordates)
Cephalochordata (Lancelets)
Leptocardii
Branchiostomatidae

Amphioxus (107268725)

Children (2 direct children, 2 direct and indirect children):

Amphioxus belcheri

Amphioxus japonicus