The film opened on Friday, June 11, 1993, and broke box office records its first weekend, with 47 million. It eventually went on to make more than 900 million worldwide

My favorite shot from the film. Raptor with DNA sequences reflecting on it

Hammond who was played by Richard Attenborough, creates the dinosaurs from DNA trapped in amber. He also carries around a cane capped with a mosquito in amber. Attenborough's brother is naturalist David Attenborough, who has his own collection of animals trapped in amber

Generally speaking, any shot of a full dinosaur was computer-generated, but shots of parts of dinosaurs were of animatronics.

The novel was published in 1990. However, pre-production of the film began in 1989, using only Michael Crichton's manuscript. It was widely believed that the book would be such a hit that it would make an outstanding movie. It turns out that assumption was correct.

There were two animatronic Tyrannosaurus built for filming. One was the full-body version, the other only consisted of a head and was used for closeups. The Tyrannosaurus' roars were a combination of dog, penguin, tiger, alligator, and elephant sounds.

The T-rex occasionally malfunctioned, due to the rain. Producer Kathleen Kennedy recalls, "The T. rex went into the heebie-jeebies sometimes. Scared the crap out of us. We'd be, like, eating lunch, and all of a sudden a T-rex would come alive

Ian Malcolm Jeff Goldblum dresses entirely in black in both this film and its sequel. In the book, he tells Ellie Sattler that he only ever dresses in black and gray, so that he never has to waste time thinking about what to wear

"Hold on to your butts."

To study the movement of the Gallimimus herd, the film's digital artists were ordered to run along a stretch of road with some obstacles, their hands next to their chest.

When the T-Rex comes through the glass roof of the Explorer in the first attack, the glass was not meant to break, producing the noticeably genuine screams from the children.

In the egg-hatching scene, a new-born baby triceratops was originally supposed to come out of the egg, but it was changed to a velociraptor.

Universal paid Michael Crichton 2 million for the rights to his novel before it was even published.

The movie briefly held the box office record until it was beaten by Titanic.

The main cry of the Velicoraptors was a combination of the sounds of elephant seal pups, dolphins and walruses.

There are only 15 minutes of actual dinosaur footage in the film: 9 minutes are Stan Winston's animatronics, 6 minutes of CGI.

Sam Neill injured his hand lighting the flare he uses to distract the Tyrannosaur. According to Neill, "It dropped some burning phosphorous on me and got under my watch and took a chunk of my arm out."

The raptors in the kitchen scene was filmed on Joseph Mazzello's birthday. Due to a misunderstanding, Joseph ran into one of the raptors on one of the takes and was injured.

There were so many wires and rigging to control the velociraptor animatronics in the kitchen stalking scene that the child actors had to literally step over and around them while the scene was being filmed

For the part where the T-Rex catches a Galliminus and shakes it in his mouth, the sound was taken from a dog shaking a toy in its mouth.

Grant and Sattler unearth a human sized velociraptor skeleton in Montana early in the film.prior to the later discovery of the Utah Rator, velociraptors were only about half the size of the animals seen in the film, and their remains have mainly been found in Asia.

The company name "InGen" is the Norwegian, Danish and Swedish word for "nobody".

The glass of water sitting on the dash of the Ford Explorer was made to ripple using a guitar string that was attached to the underside of the dash beneath the glass.

The character played by Cameron Thor is named Lewis Dodgson. Author of "Alice's Adventures in Wonderland

Both the film and the book generated so much interest in dinosaurs that the study of paleontology has had a record increase in students, and interest in general has skyrocketed, and has been at an all-time high ever since.

Jodie Foster, Sigourney Weaver, Michelle Pfeiffer, Ally Sheedy, Geena Davis, Daryl Hannah, Jennifer Grey, Kelly McGillis, Jamie Lee Curtis, Julia Roberts, Linda Hamilton, Sarah Jessica Parker, Bridget Fonda, Joan Cusack, and Debra Winger were all considered for the role of Dr. Ellie Sattler.

In the original script, the T-Rex skeleton in the lobby was hooked up to pulleys like a giant marionette. In the ending, Grant was going to man the controls and act as puppeteer, using the skeleton's head and feet to crush the raptors.