I remember watching this movie when I was little. It was a about kids that I believe found a dinasour that's all I can remember and it's driving me nuts! Help!

Was it Prehysteria!

Prehysteria! (http://www.imdb.com/title/tt0107870/)

Or "Land of the Lost" (1974) (http://www.imdb.com/title/tt0071005/) ?

Denver the last dinosaur