the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Chordata (phylum)
Urochordata (subphylum)
Ascidiacea (class)
Stolidobranchia (order)
Styelidae (family)
Botryllus (genus)
[hide inferior taxa]
Botryllus primigenus (species)
Botryllus schlosseri (species)