the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Mollusca (phylum)
Bivalvia (class)
Pteriomorphia (subclass)
Ostreoida (order)
Pectinidae (family)
Pecten (genus)
[hide inferior taxa]
Pecten maximus (species)
Pecten sp. (species)