life
 see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
  
 Empire Eukaryota (Chatton, 1925)
 see Domain Eukaryota Chatton, 1925
    
 Kingdom Animalia Linnaeus, 1758 - animals
      
 Subkingdom Bilateria Hatschek, 1888 [paraphyletic?] - bilaterians
        
 Branch Protostomia Grobben, 1908 [paraphyletic?] - protostomes
 see Infrakingdom Protostomia Grobben, 1908
          
 Infrakingdom Lophozoa T. Cavalier-Smith, 1998 [paraphyletic?]
 see Infrakingdom Lophotrochozoa Halanych, Bacheller, Aguinaldo, Liva, Hillis & Lake, 1995
            
 Superphylum Conchozoa T. Cavalier-Smith, 1998
 see Superphylum Lophotrochozoa Halanych, Bacheller, Aguinaldo, Liva, Hillis & Lake, 1995
              
 Phylum Mollusca Linnaeus, 1758 - molluscs
                
 Subphylum Bivalvia Linnaeus, 1758 [paraphyletic?] - bivalves
                  
 Genus Pecten Müller, 1776