Velociraptor are well known for their role as vicious and cunning killers thanks to their portrayal in the 1990 novel 
Jurassic Park by 
Michael Crichton and its 1993 
film adaptation, directed by 
Steven Spielberg. The "raptors" 
portrayed in Jurassic Park were modeled after the related dromaeosaurid Deinonychus, which had been named at the time by 
Gregory Paul Velociraptor antirrhopus.
[4] Paleontologists in both the novel and film excavate a skeleton in 
Montana, far from the central Asian range of 
Velociraptor but characteristic of the 
Deinonychus range. A character in Crichton's novel also states that "
Deinonychus is now considered one of the velociraptors", which suggests that Crichton used Paul's 
taxonomy even though the "raptors" in the novel are at another point referred to as 
V. mongoliensis.
[42]
 
The filmmakers greatly increased the size of the 
Velociraptor and changed the shape of its snout to proportions more characteristic of 
Deinonychus.
[43][44] In real life 
Velociraptor, like many other 
maniraptoran theropods, was covered in feathers. 
Jurassic Park and 
The Lost World: Jurassic Park,  were released before this discovery, so the creatures in both films are  depicted as featherless with scales all over in the manner of modern  reptiles. For 
Jurassic Park III the male 
Velociraptor  was given quill-like structures along the back of the head and neck.  While this was as far as CGI effects could realistically go (feathers  remained difficult to animate at the time), the structures do not  resemble the down-like feathers real-life dromaeosaurids bore or the  fully developed arm feathers, akin to the wing feathers of modern birds,  born by 
Velociraptor.
[10]