The boundaries of these districts are hereby established as shown on the map, entitled "Official Zoning Map," on file in the office of the Zoning Officer, which map, with all explanatory matter thereon, shall be deemed to accompany, be, and is hereby made a part of this chapter. The Official Zoning Ordinance Map shall carry the signature of the Mayor, President of the Borough Council, Chairman of the Planning Commission and the Borough Secretary, certifying that it is the true map adopted by the Council of the Borough of Mars. All amendments shall be identified on the map and similarly certified.