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How to Build a LEGO Dinosaur

By Melanie Jo Triebel ; Updated April 18, 2017
Make a model of Tyrannosaurus rex with Lego.

Perhaps there are no two toys more beloved by young boys than Legos and dinosaurs. So why settle for one or the other, when you can have both in a single toy? Lego makes an entire line of dinosaur construction sets, but the most iconic is the Tyrannosaurus rex. Make the legendary killer and let your imagination return you to 65 million years ago.

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Snap the external body pieces onto the central body supports. There are two external body pieces with a cylindrical rod extending from their flat side. There are also two external body pieces with a cylindrical hole in the center of their flat side. Snap one of each type onto a central body support, on opposite sides.

Connect the two body assemblies by snapping the two sides together, with the rounded ends pointing outward.

Complete the back by inserting the two black bricks provided into the depression left between the two body pieces. The two circles should be on top with the smooth slanted side sloping outward.

Rotate the central body support on the rear end of the body upward so the neck is pointing backward and slightly up and snap the tail onto the support.

Rotate the central body support on the front end of the body upward so the neck is pointing up and slightly forward and snap the head piece onto the neck.

Snap an arm piece into the front circular opening on each side of the body. Snap a leg piece into the rear circular opening on each side of the body.


The Lego Tyrannosaurus rex set may also be used to construct three other dinosaurs. By using different head and crest pieces included with the set, as well as the back-spike piece also included, you can make a parasaurolophus, an ouranosaurus, and a spinosaurus.

For toddlers and smaller children, the Lego Duplo line also makes a dinosaur set, called Dino Valley. This set comes with dinosaurs including a Tyrannosaurus rex, a mother and baby triceratops, and a mother and baby pteranodon. All of these dinosaur figures are no assembly required.


Lego construction sets contain small pieces. These pieces can be hazardous to infants and young children if swallowed.

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About the Author

Melanie Jo Triebel has been writing since 2003. Her articles have appeared in such publications as the "ARIAS U.S. Quarterly" and the "Sidley Reinsurance Law Report." Triebel holds a B.A. in music from Chapman University and a J.D. from the Chapman University School of Law. She has practiced law for nearly a decade and is licensed in California and Illinois.

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