#class_Amphibia__Amphibia  frogs; toads; newts; salamanders; caecilians
  member:  amphibian  genus_Hynerpeton  genus_Ichthyostega  order_Urodella  order_Salientia  order_Gymnophiona  superorder_Labyrinthodontia  order_Stegocephalia  tadpole
  member of:  subphylum_Vertebrata
  supertype:  class__clas  (biology) a taxonomic group containing one or more orders
     supertype:  taxonomic_group__taxonomicgroup__taxon  animal or plant group having natural relations
        supertype:  biological_group  a group of plants or animals
           supertype:  group__grouping  any number of entities (members) considered as a unit
              supertype:  collection  something gathering separated things (entities/situations)
                 supertype:  divisible_entity__divisibleentity  many classifications under this category are application-dependant
                    supertype:  entity  something that can be "involved" in a situation
                       supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                    supertype:  divisible_thing__divisiblething
                       supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type

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