Kids find, help excavate rare teen T.rex, chronicled in extraordinary documentary

Giant Screen Films, Evanston IL

Skeleton may reveal secrets of T. rex growth years; Narrated by Sir Sam Neill, documentary brings Teen Rex to life with animation

Marmarth, ND – Three keen-eyed young fossil hunters made the discovery of a lifetime when they found the remains of a rare teenage Tyrannosaurus rex that could rewrite history, scientists and filmmakers announce today. 

The boys — brothers Liam and Jessin Fisher, 7 and 10 years old at the time, and their 9-year-old cousin, Kaiden Madsen — spotted a large fossilized leg bone on a walk in the Hell Creek badlands area of North Dakota on July 31, 2022.

Believing they had found a relatively common duckbill dinosaur, they sent a photo to family friend and Marmarth native Dr. Tyler Lyson, Associate Curator of Vertebrate Palaeontology at the Denver Museum of Nature & Science, who organized an excavation that began 11 months later, adding the boys and a sister, Emalynn Fisher, now 14, to his team of palaeontology volunteers and experts. 

Brushing off a tooth soon after arriving, Dr. Lyson realized the boys had found a notorious T. rex — a very rare juvenile specimen. The team unearthed it in 11 days after an estimated 67 million years in that spot.

Airlifted onto a truck by a Black Hawk helicopter, giant plaster jackets containing the “Teen Rex” are now at the Denver Museum of Nature & Science, where the public will be able to follow the fossil’s preparation in the new “Discovering Teen Rex Prep Lab.” 

Remarkably, the secret of the teenage T. rex find held for nearly two years while an award-winning documentary crew, renowned palaeontologists, several of the world’s foremost natural history museums, and top animators partnered to present the kids’ discovery in dramatic cinematic fashion.

A crew from Giant Screen Films (GSF), a world-leading producer of large-format documentaries, was embedded with expedition and had 8K cameras rolling as the fossil’s diagnostic features were unearthed, including the eureka moment when Dr. Lyson confirmed that the kids had found a Tyrant King. 

As a result, audiences can experience the adventure of the discovery and excavation through an immersive new giant screen documentary, T. REX, narrated by New Zealand actor Sir Sam Neill, who portrayed Dr. Alan Grant in the Jurassic Park films. 

With hat tips to famous specimens, landmark discoveries, and wild cinematic depictions over the last century, GSF’s documentary intercuts the remarkable expedition with cutting edge computer graphics that bring the iconic T. rex—from hatchling to hulking adult—to life on the world’s largest screens. 

Extremely rare juvenile T. rex

‘Juvenile rex specimens are extremely rare,” said Dr. Lyson, who found his first dinosaur in the same area at age 6. He credits his own career to the mentorship of paleontologists who invited him to join their work in the Badlands. 

“This find is significant to researchers because the ‘Teen Rex’ specimen may help answer questions about how the king of dinosaurs grew up,” he said.

The size of the specimen’s tibia (shin bone), 82 cm, compared to the size for a full grown adult’s tibia (112 cm) suggests that it was 13 to 15 years old when it died around 67 million years ago.

Paleontologists also estimate that “Teen Rex” likely weighed around 3,500 pounds (1,632 kg), measured roughly 25 feet (7.6 m) from nose to tail, and stood about 10 feet (3 m) in height—about two-thirds the size of a full grown adult.

“It’s remarkable to consider how T. rex might have grown from a kitten-sized hatchling into the 40-foot, 8,000 pound adult predator we are familiar with,” said Dr. Thomas Holtz, a vertebrate paleontologist from the University of Maryland and renowned T. rex authority. 

He continued, “scientists can really only speculate on how ‘Teen rex’ might have lived and behaved, so discoveries like this one have the potential to provide important new information about those earlier life stages, when fastest growth likely occurred.” 

The experience was especially exciting for Jessin, a dinosaur aficionado and aspiring paleontologist who dressed up as his hero, Dr. Tyler Lyson, for Halloween a few years ago. 

And “helping these kids experience the thrill of their discovery and to be inspired by science is incredibly rewarding to me personally,” said Dr. Lyson, who was himself mentored by leading paleontologists visiting the area when he was very young. 

The boys are keen to visit the “Teen Rex Prep Lab” when it opens and the film debuts in Denver June 21. They are also excited about a later film screening for Marmarth schoolmates to share the thrill of their discovery. 

With Dr. Holtz as lead advisor, the T. REX filmmakers collaborated with a consortium of paleontologists, eight prominent natural history museums, and award-winning visual effects artists to create scientifically accurate models of rex and the Hell Creek prehistoric ecosystem, a highly studied rock formation in the Upper Midwest that contains fossil remains from the Late Cretaceous, the final days of the dinosaurs—from Triceratops to Edmontosaurus. 

Supported by a coalition of leading museums worldwide, the documentary features cameos of SUE, perhaps the most well-known T. rex specimen ever found (Field Museum, Chicago); T. rex WYREX (Houston Museum of Natural History); T. rex THOMAS (Los Angeles Natural History Museum) and HORRIDUS the Triceratops (Melbourne Museum). 

A dream documentary story

“We never could have planned the inspiring story that unfolded in front of the cameras,’ said producer and writer Andy Wood. “Kids finding any large dinosaur is remarkable, but as the shoot progressed, the team realized that we were witnessing something even more rare—a truly historic T. rex discovery. It’s been a real thrill.” 

“This is more than just a documentary—it’s a chance for families to experience the thrill of discovery through the eyes of these young explorers in a format that makes you feel like you’re right there with them,” says co-director/writer David Clark.

“This is the kind of story that documentary filmmakers dream of capturing.”

“Beyond fostering an appreciation of the fun of science, the film sends a message about getting outside and exploring,” said Dr. Lyson. “That’s a really important message that we want to come through—one that I think is just baked into this story.”

T. REX will premiere at select theatres worldwide beginning June 21, opening in 100 cities over the coming months in all immersive museum cinema formats, including large format, IMAX, 3D, and giant dome. 

GSF has also partnered with Rextooth Studios to create a graphic novel to accompany the film.

The fossil was collected on land under the jurisdiction of the Bureau of Land Management (USA), permit ND2023-00084.

T. REX is a Giant Screen Films and D3D Cinema production, in partnership with:

  • Field Museum, Chicago
  • Denver Museum of Nature & Science
  • Houston Museum of Natural Science
  • Natural History Museum of Los Angeles County
  • in association with
  • Cincinnati Museum Center
  • Cleveland Museum of Natural History
  • Museums Victoria, Australia, and
  • New Mexico Museum of Natural History and Science

Giant Screen Films 

Based in Evanston, Illinois, GSF is one of the world’s leading and most active large-format film producers. It has often partnered with the National Science Foundation and pioneered large-format films that push the boundaries of the medium. Through the magic of immersive sight and sound technologies, GSF’s productions challenge the imaginations of children and adults, offering inspiring perspective on the world and an unforgettable theater experience. Meaningful educational collaborations and partnerships extend each film’s impact far beyond the theater.

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The Associated Press, via Washington Post Three boys found a T. rex fossil in North Dakota. Now a Denver museum works to fully reveal it https://www.washingtonpost.com/national/2024/06/03/trex-dinosaurs-boys-hell-creek-denver/e5366830-21f2-11ef-bc8d-a8ae61b84dde_story.html

Reuters, United Kingdom, via Daily Mail Rare fossil of adolescent Tyrannosaurus – ‘Teen Rex’- found by US kids https://www.dailymail.co.uk/wires/reuters/article-13492939/Rare-fossil-adolescent-Tyrannosaurus–Teen-Rex-US-kids.html

Agence France Presse, Pretty cool’: US kids discover remains of teen T-Rex https://www.dailymail.co.uk/wires/afp/article-13495169/Pretty-cool-US-kids-discover-remains-teen-T-Rex.html; French, Des enfants américains découvrent un jeune tyrannosaure en se promenant https://fr.news.yahoo.com/enfants-am%C3%A9ricains-d%C3%A9couvrent-jeune-tyrannosaure-210405290.html; Portuguese, Sorprendente descubrimiento paleontológico | Hallan los restos del rey de los dinosaurios, https://www.cronista.com/mexico/actualidad-mx/sorprendente-descubrimiento-paleontologico-hallan-los-restos-del-rey-de-los-dinosaurios-t-rex/; Japanese 子どもたちがT・レックスの希少な幼体化石を発見 米https://news.yahoo.co.jp/articles/7ff92ee04666638ab628496461521a3a85923762

Good Morning America (ABC Television), United States, 3 young boys and dad uncover rare dinosaur bones https://www.goodmorningamerica.com/news/video/3-young-boys-dad-uncover-rare-dinosaur-bones-110963661

Inside Edition (syndicated TV), United States, North Dakota Brothers Speak About Finding T. Rex Fossil, https://www.insideedition.com/media/videos/north-dakota-boy-says-he-was-speechless-after-finding-t-rex-fossil-87720

New York Times, United States, Family Discovers Rare T. Rex Fossil in North Dakota https://www.nytimes.com/2024/06/04/science/t-rex-fossil-denver-north-dakota.html?unlocked_article_code=1.xE0.ufW4.mERCBF5yMgPT&smid=url-share

The Washington Post, United States, ‘We found a T. rex!’ How three kids made a rare dinosaur discovery https://wapo.st/4cc5H6F

CNN International, via Yahoo! News, United States, Hiking family discovers rare T. rex fossil https://www.yahoo.com/news/hiking-family-discovers-rare-t-152912731.html

USA Today, United States, Three boys discovered teenage T. rex fossil in northern US: ‘Incredible dinosaur discovery’ https://www.usatoday.com/story/news/nation/2024/06/04/teenage-t-rex-discovered-boys-north-dakota/73971112007/

PEOPLE, United States, 3 Boys Discover Rare T. Rex Fossil While on a Family Hike: ‘That’s a Dinosaur’ https://people.com/3-boys-discover-rare-t-rex-fossil-on-family-hike-8658169

CBS News, United States, Rare juvenile T. rex fossil found by children in North Dakota to go on display in Denver museum https://www.cbsnews.com/news/rare-juvenile-t-rex-fossil-found-north-dakota-badlands-by-children-denver-museum/

New York Post, United States, ‘Extremely rare’ dinosaur discovered by 3 tweens: My friends ‘don’t believe me that I found a T. rex’, https://nypost.com/2024/06/04/lifestyle/extremely-rare-t-rex-discovered-by-3-tweens-my-friends-dont-believe-me-that-i-found-a-t-rex/

Fox News, United States, Three boys discover rare T.rex fossil in North Dakota, https://www.foxnews.com/us/three-boys-discover-rare-trex-fossil-north-dakota

Daily Mail, United Kingdom, Teen Rex! Fossil of ‘rare’ juvenile Tyrannosaurus found by kids in North Dakota is the subject of a new documentary narrated by Jurassic Park star Sam Neill, https://www.dailymail.co.uk/sciencetech/article-13488887/kids-discover-fossil-juvenile-T-Rex.html
Scientists, kids and CGI dinosaurs star in T.REX trailer https://www.dailymail.co.uk/video/sciencetech/video-3202853/Video-Scientists-kids-CGI-dinosaurs-star-T-REX-trailer.html

The Times, United Kingdom, Schoolboys on hike discover rare ‘teen rex’ skeleton Schoolboys on hike discover rare ‘teen rex’ skeleton, https://www.thetimes.co.uk/article/schoolboys-on-hike-discover-rare-teen-rex-skeleton-kdkhkl8f8

The Independent, United Kingdom, Three schoolboys left ‘completely speechless’ after discovering T rex skeleton in North Dakota https://www.independent.co.uk/news/world/americas/trex-skeleton-discovery-north-dakota-b2556603.html

Agencia EFE, Spain, El hallazgo de un T-Rex adolescente puede revelar porqué era el rey de los dinosaurios (The discovery of an adolescent T-Rex may reveal why it was the king of the dinosaurs) https://www.infobae.com/america/agencias/2024/06/03/el-hallazgo-de-un-t-rex-adolescente-puede-revelar-porque-era-el-rey-de-los-dinosaurios

Deutsche Presse Agentur, Germany, Wie drei Jungen einen Tyrannosaurus rex entdeckten (How three boys discovered a Tyrannosaurus rex) https://www.spiegel.de/wissenschaft/natur/tyrannosaurus-rex-drei-jungen-entdecken-fossil-in-north-dakota-a-28affd79-e1ba-4c30-9509-dddda2766dfc

Live Science, United States, Kids discover extremely rare teen T. rex fossils sticking out of the ground during North Dakota Badlands hike, https://www.livescience.com/animals/dinosaurs/kids-discover-extremely-rare-teen-t-rex-fossils-sticking-out-of-the-ground-during-north-dakota-badlands-hike

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