I first saw this movie in '69,at a summer kids' matinee,and thought it was the coolest thing I'd ever seen.Seen it several times since,and still love it.The first eohippus scene is one of the best Harryhausen effects scenes ever,even better than the CGI stuff you see nowadays.Unlike most critics,I think the story is good and the cast does well with it,especially Laurence Naismith(Prof.Bromley) and Freda Jackson(the spooky old gypsy,Tia Zorina).And,as usual,Jerome Moross turns out a wonderful musical score.Watch it,if you get the chance!!