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Deinonychus was the first of the raptors (technically called "dromaeosaurs") to be known from a nearly complete skeleton. Velociraptor had been discovered forty years earlier but was known only from a skull and a few bones of its hands and feet.[1]

The skeleton of Deinonychus were first to show the now infamous sickle-shaped retractable foot claw (8 inch), used for ripping open the skin of a victim, causing the preys guts be ripped and with a considerable amount of damage. Deinonychus also had a nasty bite, with over 60 knife-like teeth. Although with a deadly bite its arms and legs would be most powerful and could rear on one leg and kick an opponent.[1]

Dr. John Ostrom discovered Deinonychus in 1964. Dr. Ostrom believed that this dinosaur was an agile, swift predator, more like a warm-blooded mammal or bird than a cold-blooded crocodile.[1]

Wikipedia has a more detailed and comprehensive article on Deinonychus


Jurassic World[]

Deinonychus is briefly seen on the Holoscape screen in the Innovation Center of Jurassic World.

Jurassic World: Fallen Kingdom[]

Deinonychus apparently was subject to cruelty at some point in the past, although it is unknown if there are any surviving populations.[2][3]

Behind the scenes[]


Concept art of Mark "Crash" McCreery for Jurassic Park of Deinonychus, which would later be renamed to Velociraptor later in the film's production.

Deinonychus was the basis for novel canon's Velociraptors and in turn the raptors seen in the films.

Jurassic Park novel author Michael Crichton visited John Ostrom—the discoverer of Deinonychus—when doing research for the novel. Ostrom said that Crichton's Velociraptor was based on Deinonychus in "almost every detail" and Crichton had even called him to inform him that he had renamed the Deinonychus in his novel to Velociraptor because he felt it sounded "more dramatic".[4]

During the production of the Jurassic Park film, Steven Spielberg's production contacted John Ostrom and requested copies of all the technical papers that Ostrom had done of Deinonychus.[4] Unlike the novel, the raptors that were seen in the film were to be properly named Deinonychus and Mark "Crash" McCreery had even made concept art of this raptor in 1991,[5] but later in pre-production it was renamed to Velociraptor.

For the sounds of Deinonychus from Jurassic World Evolution, one of their sounds were altered versions of Dilophosaurus and fur seals.

Deinonychus was scheduled to appear in Jurassic World: Dominion, but it was replaced by Atrociraptor sometime in 2020.[6]



Jurassic World: Dominion[]


  • Deinonychus is featured on the DPG list of animals subjected to cruelty, making it canon but it is unknown whether or not it was actually bred. However, the animal is also featured in the Jurassic World holoscape, these two things combined gives the implication that Deinonychus was actually bred and existed on Isla Nublar, but this is unconfirmed.

Notes and references[]

  1. 1.0 1.1 1.2 1.3 1.4 1.5 Dinosaur Field Guide, page 63.
  2. 329F9EC3-8927-401F-AB2A-1CC8A9F698B4
  3. According to Jack Edwins, the dinosaurs in red are the ones that wouldn't be seen in Fallen Kingdom.
  4. 4.0 4.1 Cummings, Mike. (June 18 2015) Yale’s legacy in ‘Jurassic World’. Yale News.
  5. icollector.com - Mark “Crash” McCreary conceptual artwork for Deinonychus from Jurassic Park
  6. Production designer Kevin Jenkins revealed on Twitter: "It was decided we try a new dinosaur . For a while it was a Deinonychus. Then I got an email one evening that simply said ‘ Atrociraptor’ from Colin."