#amphibian_genus__amphibiangenu  any genus of amphibians
  subtype:  genus_Hynerpeton  genus_Ichthyostega  genus_Salamandra  genus_Triturus  genus_Notophthalmus  genus_Taricha  genus_Ambystoma  genus_Cryptobranchus  genus_Megalobatrachus  family_Proteidae  genus_Proteus  genus_Necturus  genus_Dicamptodon  genus_Rhyacotriton  genus_Plethodon  genus_Desmograthus  genus_Aneides  genus_Batrachoseps  genus_Hydromantes  genus_Amphiuma  genus_Siren  genus_Rana  genus_Eleutherodactylus  genus_Hylactophryne  genus_Leptodactylus  genus_Polypedates  genus_Ascaphus  genus_Leiopelma  genus_Bufo  genus_Alytes  genus_Bombina  genus_Scaphiopus  genus_Hyla  genus_Acris  genus_Pseudacris  genus_Pternohyla  genus_Gastrophryne  genus_Hypopachus  genus_Pipa  genus_Xenopus
  member of:  subphylum_Vertebrata
  supertype:  genus__genu  (biology) taxonomic group containing one or more species
     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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