T.REX - OMNIMAX® Theater – Saint Louis Science Center (2025)

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GREATEST OF ALL TYRANTS

About

Anchored by the true story of the young fossil hunters who made the discovery of a lifetime when they spotted a large fossilized leg bone on a walk on public lands in North Dakota, T. REX intercuts the remarkable fossil dig, with cutting edge computer graphics that bring the iconic T. rex—from hatchling to hulking adult—to life. Narrated by Jurassic Park actor Sam Neill, T. REX explores the newest science that has helped reinvent our understanding of the iconic predator.

For over a hundred years dinosaurs have inspired and thrilled audiences, commanding blockbuster status in museums and at the box office. But among them towers a king—a tyrant lizard king. With leaps in CGI wizardry and revolutions in tyrannosaur paleontology over the past twenty-five years, the time has come to revisit rex in the world’s prestigious museum cinemas.

Working with top tyrannosaur scientists, a coalition of natural history institutions, and pioneering paleo and visual effects artists, GSF’s original giant screen production on this iconic dinosaur—and its carnivorous Cretaceous cousins—aims to be the most dazzling and accurate T. rex documentary ever made.

With hat tips to famous specimens, landmark discoveries, and wild cinematic depictions over the last century, the film will explore the interplay between speculation and evidence, and reveal how the process of science refreshes and reimagines our understanding of this legendary dinosaur.

RATING: G – General Audiences
RUNTIME: Approx. 45 minutes.

Tickets for OMNIMAX® films are available online, at the Science Center or by calling our box office at 314.289.4400. Feature films may have special pricing. Discounts are available for groups of 10 or more.

OPENING 12.13

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Showtimes

Fri.Dec 13

Sat.Dec 14

Sun.Dec 15

Mon.Dec 16

Thu.Dec 19

Fri.Dec 20

Sat.Dec 21

Sun.Dec 22

Mon.Dec 23

Thu.Dec 26

Fri.Dec 27

Sat.Dec 28

Sun.Dec 29

Mon.Dec 30

Tue.Dec 31

Wed.Jan 1

Friday, December 13

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OMNIMAX: T.REX

10:00 am

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12:00 pm

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2:30 pm

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Saturday, December 14

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OMNIMAX: T.REX

10:00 am

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12:00 pm

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2:30 pm

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Sunday, December 15

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OMNIMAX: T.REX

12:00 pm

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2:30 pm

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Monday, December 16

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OMNIMAX: T.REX

12:00 pm

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2:30 pm

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Thursday, December 19

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OMNIMAX: T.REX

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Friday, December 20

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OMNIMAX: T.REX

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Saturday, December 21

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OMNIMAX: T.REX

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Sunday, December 22

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OMNIMAX: T.REX

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Monday, December 23

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OMNIMAX: T.REX

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Thursday, December 26

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OMNIMAX: T.REX

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Friday, December 27

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OMNIMAX: T.REX

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Saturday, December 28

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OMNIMAX: T.REX

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Sunday, December 29

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OMNIMAX: T.REX

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Monday, December 30

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OMNIMAX: T.REX

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Tuesday, December 31

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OMNIMAX: T.REX

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Wednesday, January 01

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OMNIMAX: T.REX

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When did T. rex live?

T. rex lived between 66 to 67 million years ago. This was at the end of the Cretaceous period which started 145 million years ago, ending right around when T. rex became to be.

According to some experts, there is a gap in the fossil record from 69 million to 67 million years ago in what is now the Western U.S. and Canada, where T. rex fossils are typically found.

Up until 69 million years ago, many of the dinosaurs in the Hell Creek Formation, which includes parts of present day Montana, North Dakota, South Dakota and Wyoming, were small, or no longer than 30 feet (9 meters) long, Carr told Live Science. After the “blackout,” fossils from 67 million years ago show that the dinosaurs were larger and completely different to before. It’s also the first time that T. rex remains appear.

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Movie Pricing

This is a paid experience.

Ages

Price

MembersFREE*
Children (ages 2-12)$9.50
Adults (ages 13-59)$11.50
Seniors (ages 60+)$9.50
College Students with ID$9.50
Military$9.50

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Groups: $8.50 per person for all groups

Group Visit Information

*Free tickets based on membership level
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Meet Guanlong: The First Tyrannosaur.

Introduction

Pronounced GWON-long woo-kay-eye

Named from the Chinese words guan, meaning ‘crown’, and long, meaning ‘dragon’. This references to its flashy head-crest, the most elaborate of any known theropod dinosaur. The name comes from the Chinese word wucai meaning ‘five colours’ and refers to the multi-hued rocks at Wucaiwan, the badlands where fossils of Guanlong were found.

Guanlong wucaii is one of the most primitive tyrannosaurs known. It hunted its prey 95 million years before T. rex lived.

Identification
Guanlong wucaii was a small to mid-sized early tyrannosaur and a member of the family Proceratosauridae.

Guanlong wucaii was not your typical tyrannosaur! It has long arms and three-fingered hands for grabbing and ripping. The shape of its teeth, and features in the skull and pelvis place it in the tyrannosauroid superfamily. Like many other theropods, it almost certainly had feathers.

Guanlong’s head crest ran along its snout, from nostrils to eye sockets. It was distinctly delicate, too flimsy for use as a weapon, and probably brightly colored. Made from fused nasal bones, the crest was filled with air sacs and reminded the discoverers of the ornamental features found on some living birds, like cassowaries and hornbills. The crest may have been attractive to other Guanlong. This was very unusual in a predator.

Habitat
Guanlong hunted in forests, predominantly made up of conifers and ferns, including giant forms. The climate was seasonal, with warm and humid summers and dry winters.

Distribution
The first Guanlong fossils were found in 2002, and described and named in 2006.

One of the earliest tyrannosauroids yet to be discovered, Guanlong roamed what is now Xinjian, China, during the Late Jurassic Period, 163-158 million years ago.

Want to learn more?

Learn more at National Geographic Kids

Learn more at the US National Science Foundation

Discovering Teen Rex

Facts About Teen Rex
  • The fossil of Teen Rex preserves about 30% of the skeleton collected in a plaster jacket weighing about 3 tonnes. This was approximately 9 feet long by 5 feet wide.
  • Teen Rex would have measured approximately 25 feet in length and 10 feet in height.
  • It is estimated that Teen Rex weighed ~3,500 pounds at the time of its death.

The discovery of a teenage T. rex is significant because many T. rex fossils found are from older, larger animals. The teenage specimen provides researchers with an opportunity to study the growth and development of T. rex during this crucial phase of their life, the period of fastest growth, offering insights into how these formidable predators matured.

Location

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OMNIMAX Theater films take place in the OMNIMAX Theater on the 2nd floor of the main 5050 Oakland Building. Access is available through the main entrance, then the stairs in the main lobby to the second floor.

Membership

Members get free OMNIMAX tickets.

Become a Science Center member and receive free OMNIMAX tickets and discounted admission to feature films, as well as a full year of additional members-only benefits.

Plus, members help support the Science Center and our mission to make science learning open to everyone.

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Accessibility

Convenient wheelchair accessible seating for the OMNIMAX is available via the third floor theater entrance. Elevators and ramps serve all public areas of the OMNIMAX.

OMNIMAX offers hearing assistance that is not available in any theater in the region. This includes new adjustable caption devices, new hearing assistance devices with Descriptive Video Services(DVS) and Telecoil. When ordering tickets, please let your reservationist know you’re interested in these items, or see an usher before your film begins.

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T.REX - OMNIMAX® Theater – Saint Louis Science Center (2025)

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