Siebel Dinosaur Complex

MOR Bite

Siebel Dinosaur Complex

One of the largest collections of dinosaur fossils in the world

Siebel Dinosaur Complex

View highlights of the country’s largest collection of North American dinosaur fossils consisting entirely of discoveries made in and around Montana. MOR has become world-renowned as a dinosaur research facility because of the work of our paleontologists and graduate students. Museum of the Rockies houses the most T. rex specimens anywhere in the world - currently 13. Notable displays in this Complex include the growth and behavior series of Triceratops and Tyrannosaurus rex, Montana's T. rex skeleton, the Catherine B. rex specimen, and many, many other one-of-a-kind dinosaur finds.

Landforms/Lifeforms Exhibit
All life is interconnected. Travel through the time and view creatures that roamed the Earth long before the first dinosaur.

Bowman Dinosaur Viewing Laboratory
See MOR volunteers remove fossil specimens from the rock and prepare them for study.

Dinosaurs Under the Big Sky Exhibit
Travel through the Jurassic and Cretaceous periods of the Age of Dinosaurs and see some of the most important dinosaur discoveries made in and around Montana.

Hall of Giants
View scientific discoveries about some of the largest dinosaurs to roam Montana and the animals that fed on them!

  • See Big Al, one of the most complete Allosaurus ever discovered, whose skeleton records evidence of a tough life.
  • Meet Deinonychus, a North American cousin of Velociraptor, and examine the evidence for how this carnivore may have hunted.
  • Meet Oryctodromeus, a dinosaur that dug burrows and cared for its young inside its dens.
  • Oceans in Montana: Dip under the surface of the vast seaway that covered much of North America during the Age of Dinosaurs and encounter carnivorous marine reptiles.
  • Up in the viewing area, meet some mammals that appeared in Montana after the Age of Dinosaurs. 

Mesozoic Media Center
Enjoy images and video of the study of paleontology in Montana as well as a showcase of high-resolution histology images taken in the museum’s Paleohistology Laboratory.

Hall of Growth and Behavior
View some of the most famous dinosaur fossil discoveries in Montana including dinosaur eggs and babies.  Meet Maiasaura, the state fossil of Montana!

Hall of Horns & Teeth
Enter the world of the Hell Creek Formation and meet some of the last non-avian dinosaurs to roam Montana, including Triceratops and Tyrannosaurus rex

  • Tyrant Kings Exhibit - Come face to face with a world-class T. rex fossil collection including the largest and smallest skulls ever discovered! Explore what this famous dinosaur ate and how it lived. Tyrannosaurus rex, meaning “tyrant lizard king,” roamed the earth 65 million years ago. Now among only a handful of museums in the world to display a fossilized T. rex skeleton, this exhibit presents one of the most spectacular specimens ever unearthed – called Montana’s T. rex. Discovered near the Fort Peck Dam and one of the most complete T. rex skeletons ever found, Montana’s T. rex stands 12 feet tall and approximately 40 feet from nose to tail. It would have weighed almost seven tons as it walked the eastern regions of the state. The Tyrant Kings, featuring Montana’s T. rex presents the science and research of Tyrannosaurus rex in a very, very big way.
  • Triceratops Exhibit - One of the largest collections of Triceratops reveals how this animal grew and evolved.

Cenozoic Corridor
Sixty-six million years ago, a mass extinction event ended the reign of the non-avian dinosaurs and brought the Mesozoic Era to an end. This marked the beginning of the Cenozoic Era, a time when mammals, a group of animals that had lived in the shadows of the dinosaurs for over 100 million years, came to dominate the Earth. The new Cenozoic Corridor at MOR highlights the fossils of mammals and other creatures that roamed Montana after the ‘Age of Reptiles’, including ancient horses, bison, mammoths, rhinoceroses, and a bone-crushing dog.



Permanent Exhibit


The Siebel Dinosaur Complex


Included with admission

Exhibit Photos

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Siebel Dinosaur Complex

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