 The film 's trailers only gave fleeting glimpses of the dinosaurs , a tactic journalist Josh Horowitz described as " that old Spielberg axiom of never revealing too much " when Spielberg and director Michael Bay did the same for their production of Transformers in 2007 . The film was marketed with the tagline " An Adventure 65 Million Years In The Making . " This was a joke Spielberg made on set about the genuine , thousands of years old mosquito in amber used for Hammond 's walking stick . 
