#genus__genu  (biology) taxonomic group containing one or more species
  subtype:  #form_genus  #bacteria_genus  #protoctist_genus  #fish_genus  #chordate_genus  #bird_genus  #amphibian_genus  #reptile_genus  #arthropod_genus  #mammal_genus  #sponge_genus  #coelenterate_genus  #ctenophore_genus  #worm_genus  #mollusk_genus  #echinoderm_genus  #type_genus  #form_genus.genus  #moss_genus  #gymnosperm_genus  #monocot_genus  #dicot_genus  #fungus_genus  #plant_genus  #fern_genus
  member:  #subgenus  #species
  member of:  #family
  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:  pm#collection  something gathering separated things (entities/situations)
              supertype:  pm#divisible_entity__divisibleentity  many classifications under this category are application-dependant
                 supertype:  pm#entity  something that can be "involved" in a situation
                    supertype:  pm#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:  pm#divisible_thing__divisiblething
                    supertype:  pm#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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