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• Domain: Eukaryota () - Whittaker & Margulis,1978 - eukaryotes
  • Kingdom: Animalia () - C. Linnaeus, 1758 - animals
    • Subkingdom: Bilateria () - (Hatschek, 1888) Cavalier-Smith, 1983
      • Branch: Protostomia () - Grobben, 1908
        • Infrakingdom: Ecdysozoa () - A.M.A. Aguinaldo et al., 1997 ex T. Cavalier-Smith, 1998
          • Superphylum: Aschelminthes ()
            • Phylum: Nemata () - (Rudolphi, 1808) Lankester, 1877
              • Class: Secernentea () - Von Linstow, 1905
                • Subclass: Rhabditia ()
                  • Order: Ascaridida ()
                    • Suborder: Ascaridina () -  
                      • Superfamily: Ascaridoidea () -  
                        • Family: Ascarididae () -  
                          • Genus: Baylisascaris ()
                            • Specific name: columnaris - Leidy
                              • Scientific name: - Baylisascaris columnaris Leidy