the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Mollusca (phylum)
Bivalvia (class)
Lamellibranchiata (alias)
Pelecypoda (alias)
[hide inferior taxa]
Myoida (order)
Nuculoida (order)
Pholadomyoida (order)
Pteriomorphia (subclass)
Solemyoida (order)
Unionoida (order)