JP has been kinda toying with the idea of mutant/hybrid dinosaurs for awhile, even before Jurassic World.
Of course, the most notable example of this was the short lived Chaos Effect toyline, featuring weirdo hybrid dinosaurs in wacky and gaudy color schemes. But one thing that goes kinda unnoticed is that mutant dinosaurs were a center theme during Universal's Halloween Horror Nights at their Orlando resort one year.
Basically, in 2002, Universal moved HHN from its usual home at Studios Florida to their recent and hottest theme park, Islands of Adventure. During the event, the park was renamed to "Islands of Fear", and all of its themed lands were morphed into far more sinister and darker versions of themselves: Marvel Super Hero Island became "Island Under Seige", where all the Marvel superheroes had been crushed by the villains, led by Carnage who transformed the island into a living warzone. Toon Lagoon became "Treaks and Foons", infested with freaky cartoony characters lurking about in huge piles of bubbely foam dispensed throughout the land. The Lost Continent became "Island of Evil Souls", with lots of evil demons and shit.
This brings us to IOA's Jurassic Park area, which was converted into "JP: Extinction". Just like in the movies, the power was turned off, allowing all carnivious dinosaurs to roam free and wreak havoc throughout the park (
they even had dudes dressed up as velociraptors jumping out the bushes scaring people lol). But the big difference here is that, through some top secret inGen experimentation that went horribly wrong, these bizarre half human, half dinosaurs were born.
For the event, Universal converted the Triceratops Encounter walkthrough (RIP) into "Project Evilution", an outdoor haunted maze, where guest witnessed the chaos of these dinomen.
And then Universal messed around with the idea of dinosaur-human hybrids for a potential Jurassic Park 4. Go figure.