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Metazoa, Backbone, Notochord, Four Sets of Hox Genes, Jawless, Bony…

- - - - Lophotrochozoa
        
        Syndermata
        
        Annelids
        
        Mollusks
        
        Platyhelminthes
        
        Lophophorates
        
        Brachiopods
        
        Ectoprocts
      - Ecdysozoa
        
        Arthropods
        
        Nematodes
    - - Echinoderms
      - Chordates
        
        Cephalochordates
        
        Urochordata
        
        Vertebrates
        
        Cyclostomes
        
        Myxini
        
        Petromyzontiforms
        
        Gnathostomes
        
        Osteichthyans
        
        Actinopterygii
        
        Lobe-fins
        
        Dipnoi
        
        Tetrapods
        
        2 more items...
        
        Actinistia
        
        Chondrichthyans