#subclass  (biology) a taxonomic category below a class and above an order
  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

No statement uses or specializes #subclass; click here to add one.