The “Jurassic Park IV” sequel, in the works from a team that includes executive producer Steven Spielberg, director Joe Johnston, writers Rick Jaffa and Amanda Silver and producers Kathleen Kennedy and Frank Marshall, won’t be out for a while yet — it’s slated for a 2014 release. But the website iwatchstuff.com turned up some intriguing concept art for the project that was apparently rejected — art that would have taken the megahit movie series in a much different direction.

The concept apparently came from an earlier pitch for the movie, with a script surfacing back in 2007 that involved a clandestine plot to combine human and dinosaur DNA.

Here’s a taste of what the dinosaur-human hybrids would have looked like: