Concept art for one of the original ideas for Jurassic Park 4 has it the Internet thanks to Badass Digest. Keep in mind, this idea, which involved gun-toting dinos, has been scrapped for a new (classic) idea.
Years ago John Sayles wrote a script for Jurassic Park IV that featured genetically engineered human-dinosaur hybrids that were super smart gun-toting mercenaries. It was, to put it mildly, a brazen and bonkers idea for a sequel to the franchise, and the script was eventually reviewed on Ain't It Cool and the project shitcanned after the internet crapped its shorts in horror.Source: Badass Digest
How far did the project get? Not that far, but far enough to warrant concept art, some of which was created by artist Carlos Huante. You can see those images here, and they're not what I was expecting. I had in mind something more pulpy, real dinosaurs but with human eyes and anthropomorphized expressions. Instead what Huante came up with was essentially the design Sony used for The Lizard in The Amazing Spider-Man. Some of the other pieces of concept art by other artists are cool - I love the triceratops - but Haunte tells the website Jurassic Park IV that the designs alone were enough to make Universal back down from the film - AICN's script review putting the final nail in the coffin.
I've always felt that Sayles' script would have made an awesome movie, but maybe not quite an awesome Jurassic Park movie. The triceratops and T-rex designs make me think I'd like to have seen that non-Jurassic Park movie - The Jurassic Dozen or whatever it might have been. That triceratops needs a big stogie in his mouth.