Deleting page numbering in Pages

I have recently prepared a 182 page book for printing. The original document was written in WORD®. The page numbering is not completely in the footer strip, but across the upper line of the footer box. I would like to delete these numbers, but cannot highlight them nor remove them. They behave as page numbers, but cannot be removed. If I try to insert page numbers the same numbers appear in the footer box. Has anyone a bright idea how I can delete them?