Plan Your Visit

Growth & Behavior of Dinosaurs

The Growth and Behavior of Dinosaurs

Have you ever wondered why juvenile dinosaurs look different than adults?  Could these differences cause paleontologists to mistakenly name dinosaurs?

If you are a dinosaur enthusiast and want to know the answers to these questions, you would have to travel to the Museum of the Rockies in Bozeman, Montana to find out……until now. Incredibly rare and beautiful fossils are coming to you! “The Growth and Behavior of Dinosaurs” is a unique traveling exhibition from the Museum of the Rockies featuring more than 25 years of research by Dr. Jack Horner, Retired Curator of Paleontology, and his research team.

This spectacular exhibit combines real and replicated fossil specimens from the Museum’s extensive collection with KOKORO Japan’s renowned full-size animatronic T. rex and other dinosaurs to create an exhibit that no one else in the world could produce.  The exhibit is the first to explore the concept of ontogeny, or the development of an animal through its life, and its implications for the science of paleontology.

After many years of research, Dr. Horner and his research team have concluded that more than one-third of all dinosaur species named from the Cretaceous Period may have invalid names. They hypothesize that for more than a century, paleontologists have mistakenly named numerous dinosaur general and species because they did not know how to distinguish the different developmental or growth characteristics between juvenile and adult dinosaurs.

“The Growth and Behavior of Dinosaurs” tests this hypothesis by examining the development and growth with two of the most famous and popular dinosaur species:  Triceratops and Tyrannosaurus rex.  Further evidence comes from histological analysis, the study of microscopic structures of animals, which is the only method currently available to recognize different stages of growth in dinosaurs. The Museum of the Rockies is a pioneer in the field of paleo-histology.

This one-of-a-kind traveling exhibit will fascinate visitors, young and old, as it teaches them and challenges the scientific community.  Did Dr. Horner and his team prove their hypothesis?  What will you, and your visitors think?

What's great about it!

  • A one-of-a-kind exhibit that can only come from the Museum of the Rockies.
  • There is no other traveling dinosaur exhibit like it in the world. Hundreds of thousands of museum visitors in Asia have already seen this exciting exhibit!
  • Features skeletons & skulls of the world’s most well-known dinosaurs, Tyrannosaurus rex & Triceratops.
  • Museum visitors observe how skulls change their shapes as they grow!
  • Find out why many dinosaur species have invalid names! Is Torosaurus really Triceratops?
  • Includes four dynamic animatronic dinosaurs from Kokoro Japan never seen before in the United States!
  • 5,000 – 6,000 sf, will fit in most medium-to-large museums!

What’s in it!

  • Kokoro Japan’s full-size T. rex animatronic.
  • Kokoro Japan’s Triceratops subadult, juvenile and baby animatronics.
  • Growth series of  5 Tyrannosaurus rex replica skulls featuring Chomper, the smallest T. rex ever discovered!
  • Adult Tyrannosaurus rex replica skeleton!
  • Real T. rex teeth that show the difference between flesh eaters and bone crunchers!
  • Real partial T. rex jaw showing tooth replacement structure.
  • Real Triceratops sacrum with T. rex bite marks!
  • Two real Triceratops skulls (subadult and adult).
  • Growth series of eight Triceratops skulls from baby to full adult!
  • Real Triceratops adult horn!
  • Triceratops skull kids climber!
  • Three “What’s that Bone?” (Funny Bonz?) education carts!
  • Three video kiosks featuring field and laboratory work at the Museum of the Rockies!
  • Full text panels and much much more!

For more information and a complete exhibit spec sheet, please call Patrick Leiggi at 406-994-3983 or email; or call David Kinsey at 406-994-5277 or email