the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Chordata (phylum)
Cephalochordata (subphylum)
Branchiostomidae (family)
Branchiostoma (genus)
[hide inferior taxa]
Branchiostoma belcheri (species)
Branchiostoma californiense (species)
Branchiostoma floridae (species)
Branchiostoma lanceolatum (species)