The Children Who Made The Dinosaurs Feel Real
Jurassic Park needed more than groundbreaking dinosaurs to work. It needed audiences to believe that two frightened children were trapped inside a miracle gone wrong. Ariana Richards and Joseph Mazzello gave the movie its human terror, wonder, and heart. Decades later, their lives moved in very different but equally fascinating directions.
Ariana Richards Played Lex Murphy
Ariana Richards was only a young teenager when she played Lex Murphy, the older grandchild of John Hammond. Lex could have been written as just another screaming kid, but Richards gave her fear, intelligence, humor, and courage. Her performance helped make the dinosaurs feel genuinely dangerous.
Then there was her adorable, younger co-star.
Screenshot from Jurassic Park, Universal Pictures (1993)
Joseph Mazzello Played Tim Murphy
Joseph Mazzello played Tim Murphy, Lex’s younger brother and the dinosaur-obsessed child who instantly connected with Dr Alan Grant. Tim was curious, funny, vulnerable, and brave. Mazzello’s wide-eyed performance made him one of the most memorable child actors in the film.
Screenshot from Jurassic Park, Universal Pictures (1993)
Their Auditions Were Unusual From The Start
Richards later recalled that her audition for Jurassic Park was highly secretive and did not begin with ordinary dialogue. Instead, she was asked to scream at the top of her lungs. That made sense for a movie where fear had to feel convincing and unforgettable.
Screenshot from Jurassic Park, Universal Pictures (1993)
Spielberg Knew How To Work With Children
Richards has praised Steven Spielberg’s approach with young actors, saying he made filming feel fun and natural rather than overly controlled. That mattered on a set filled with effects, danger cues, and imaginary dinosaurs. The children had to react believably to things that often were not really there. She later shared, "He's a genius...he made it feel like I wasn't being directed".
Pikawil from Laval, Canada, Wikimedia Commons
The Set Was Full Of Hollywood Legends
Richards and Mazzello were surrounded by adult actors with enormous presence, including Sam Neill, Laura Dern, Jeff Goldblum, and Richard Attenborough. For young performers, it could have been intimidating. Instead, the adult cast helped create a sense of protection and playfulness around them.
Screenshot from Jurassic Park, Universal Pictures (1993)
Sam Neill Became A Protective Presence
On screen, Dr Alan Grant begins the film awkward around children, then slowly becomes their protector. Off screen, Neill also became an important figure to the young actors. Years later, Richards described him as a “mentor, protector, and above all, friend,” a tribute that revealed how deeply he had mattered to her.
Screenshot from Jurassic Park, Universal Pictures (1993)
Laura Dern Helped Balance The Fear
Laura Dern’s Ellie Sattler brought warmth, intelligence, and urgency to the story. For the child actors, her presence helped ground the film’s terror in emotional realism. The children were not simply running from monsters. They were part of a small, frightened group trying to survive together.
Screenshot from Jurassic Park, Universal Pictures (1993)
Richard Attenborough Added Grandfatherly Warmth
Richard Attenborough played John Hammond, the grandfather who created the park and endangered his own grandchildren without fully understanding the consequences. Behind the scenes, his warmth and stature gave the set another kind of emotional anchor for the younger cast members.
Screenshot from Jurassic Park, Universal Pictures (1993)
Jeff Goldblum Brought A Different Energy
Jeff Goldblum’s Ian Malcolm was witty, strange, and unpredictable, bringing a jolt of adult irony to the film. For Richards and Mazzello, the movie’s ensemble meant working around many different acting styles. Richards described Goldblum as an "abolute hoot," explaining that "he was so funny, he was always just goofing around, making us laugh. Even just being himself, he was so funny all of the time".
That variety helped make Jurassic Park feel bigger than a simple monster movie.
Screenshot from Jurassic Park, Universal Pictures (1993)
The Dinosaurs Were Not Always Imaginary
Part of what made the children’s performances work was that they sometimes had real creatures to react to. The film famously combined computer effects with large animatronic dinosaurs. That gave Richards and Mazzello physical objects, movements, and sounds to respond to during some of the scariest scenes.
Screenshot from Jurassic Park, Universal Pictures (1993)
The Kitchen Scene Became Their Showcase
The raptor kitchen sequence remains one of the most famous scenes in the movie. Lex and Tim hide, crawl, slip, and improvise their way through a terrifying encounter. It works because Richards and Mazzello make the terror feel childlike and immediate rather than polished or heroic.
Screenshot from Jurassic Park, Universal Pictures (1993)
Lex Got To Be The Hacker Hero
In the film, Lex is not only scared. She becomes essential when she helps restore the park’s systems. Richards later said she was touched that Spielberg gave a young female character a chance to show intelligence, technology skill, and computer knowledge in a movie of that size.
Screenshot from Jurassic Park, Universal Pictures (1993)
Tim Was The Dinosaur Kid Everyone Recognized
Tim’s love of dinosaurs made him instantly relatable to young viewers. He was the child who had read the books, knew the facts, and wanted the park to be wonderful. That made his terror even more effective, because the dream he loved became the nightmare he had to survive.
Screenshot from Jurassic Park, Universal Pictures (1993)
Ariana Richards Briefly Returned To The Franchise
Richards returned briefly as Lex in The Lost World: Jurassic Park. By then, Lex was no longer trapped inside the central danger, but her appearance reminded viewers how much the first film had depended on the Murphy children. Their trauma remained part of the franchise’s emotional foundation.
Screenshot from The Lost World: Jurassic Park, Amblin Entertainment / Universal Pictures (1997)
She Eventually Stepped Away From Acting
Although Richards continued acting for a time after Jurassic Park, she eventually shifted her focus away from Hollywood. Unlike many child stars who tried to chase the same level of fame, she built a more private and creative life beyond blockbuster acting.
Screenshot from The Lost World: Jurassic Park, Amblin Entertainment / Universal Pictures (1997)
Painting Became Ariana Richards’s Main Passion
As an adult, Richards became known primarily as a painter. Her official gallery highlights her work as a fine artist, and she has built a career far removed from dinosaur chases and Hollywood premieres. For fans, that turn made her story feel unusually grounded.
She Still Understands What Jurassic Park Means
Richards has continued to speak warmly about the film’s legacy. Looking back on the movie’s anniversary, she reflected on how special it was to be there at the beginning. Her comments suggest gratitude rather than resentment toward the role that made her famous.
John Manard, Wikimedia Commons
Joseph Mazzello Kept Acting
Unlike Richards, Mazzello remained more visibly active in film and television. After Jurassic Park, he continued working as a child actor and later transitioned into adult roles. That kind of career shift is difficult, but Mazzello managed to keep building new credits.
Screenshot from The Social Network, Columbia Pictures (2010)
Spielberg Helped With His Education
Mazzello later attended the University of Southern California’s School of Cinematic Arts. Biographical accounts note that Steven Spielberg wrote him a recommendation letter, and Mazzello has jokingly linked his small role in The Lost World to helping pay for school.
Screenshot from The Lost World: Jurassic Park, Amblin Entertainment / Universal Pictures (1997)
The Pacific Proved His Adult Range
In 2010, Mazzello played Eugene Sledge in HBO’s The Pacific. The role was a major step away from Tim Murphy, requiring emotional weight, fear, exhaustion, and maturity. It helped show that he had grown into an actor capable of serious adult drama.
Screenshot from The Pacific, Playtone / DreamWorks Television / HBO Entertainment (2010)
The Social Network Put Him In A Modern Classic
Mazzello also appeared in The Social Network as Facebook co-founder Dustin Moskovitz. The film’s sharp writing and prestige helped introduce him to audiences who might not have recognized the child from Jurassic Park. It became another important piece of his adult career.
Screenshot from The Social Network, Columbia Pictures (2010)
Bohemian Rhapsody Brought Him Back To Blockbuster Audiences
In 2018, Mazzello played Queen bassist John Deacon in Bohemian Rhapsody. The movie became a huge commercial success, and the role placed him inside another major pop-culture phenomenon. Decades after Tim Murphy, he was still part of films people talked about.
Screenshot from Bohemian Rhapsody, GK Films / Regency Enterprises / 20th Century Fox (2018)
The Two Child Stars Took Different Paths
Richards and Mazzello did not follow the same post-Jurassic Park route. She became a painter and lived a quieter creative life, while he continued acting in major film and television projects. Both paths make sense. One stepped away from the machine, while the other learned how to grow within it.
Screenshot from Jurassic Park, Universal Pictures (1993)
They Remain Part Of The Movie’s Heart
The original Jurassic Park is remembered for dinosaurs, effects, music, and spectacle. But Lex and Tim gave the film its emotional stakes. Without the children, the park’s collapse would be impressive. With them, it became frightening, funny, tender, and deeply human.
Screenshot from Jurassic Park, Universal Pictures (1993)
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