While the movie will be remembered for its innovation and inclusion of computer generated visual effects, only 4 minutes of the 14 minutes of the film featuring dinosaurs were entirely created using CG.

The rest was a mix of animatronics and “man in suit” puppets. Notably, the raptors were created using a man in a suit puppeteering the head.

All of the tests were videotaped and have been compiled into this video showing how the raptor effect evolved before making it into the final film.

Hit the jump to see Stan Winston’s Jurassic Park raptor suit evolution video, narrated by John Rosengrant, which reveals the magic behind this amazing practical effect.

(slashfilm.com)