You can search the complete taxonomic tree of the species in the database. Click "Phylum" to get back to to the starting point. The thumbnails show examples of the Class, Order etc.

Phylum	Class	Order	Family	Species
Annelida	Polychaeta	Sabellida	Sabellidae	Anamobaea oerstedi
Annelida	Polychaeta	Sabellida	Sabellidae	Bispira brunnea
Annelida	Polychaeta	Sabellida	Sabellidae	Bispira variegata
Annelida	Polychaeta	Sabellida	Sabellidae	Hypsicomus
Annelida	Polychaeta	Sabellida	Sabellidae	Notaulax nudicollis
Annelida	Polychaeta	Sabellida	Sabellidae	Sabellastarte magnifica