the primary special effect, or  stop motion  animation in general. This is the first dinosaur-oriented film hit, and it led to other dinosaur movies, from  King Kong  to the  Jurassic Park  trilogy. In one of the music you can hear one of  Schubert 's music called Unfinished. References ^   http://silentmoviemonsters.tripod.com/TheLostWorld/LWDELGADO.html ^