Information on the Super 8 film format from Wikipedia.org.

Super 8 mm film is a motion picture film format released in 1965 by Eastman Kodak as an improvement of the older "Double" or "Regular" 8 mm home movie format. The film is nominally 8 mm wide, exactly the same as the older standard 8 mm film, and also has perforations on only one side. However, the dimensions of the perforations are smaller than those on older 8 mm film, which allowed the exposed area to be made larger. The Super 8 standard also specifically allocates the border opposite the perforations for an oxide stripe upon which sound can be magnetically recorded. Super 8 film is not compatible with standard 8mm film cameras.