The Lost World

If you are interested in the book and various movies - and they are about Dinosaur hunting so why wouldn't you be ? - check out this interesting website which details the various versions over the years.

http://silentmoviemonsters.tripod.com/TheLostWorld/

and if you like online books, here is a free e-copy of this classic :
http://www.literature.org/authors/doyle-arthur-conan/lost-world/