BETA
Chapter 1
The giants of the Jurassic West
Chapter 2
The tyrants of the Cretaceous coast
Chapter 3
The bizarre beasts of the East
Chapter 4
The bone wars and the fossil rush
YOUR GOAL
Master of Dinosaurs of ancient America
Ch 1 · The giants of the Jurassic West
artiteacher Guide your dinosaur pals across the map to discover the prehistoric giants of ancient America.
artiteacher Giants of Jurassic West
In the Jurassic West, where giants once would roam, The Morrison Formation became their ancient home.
artiteacher Long before Tyrannosaurus rex, this agile, three-clawed predator ruled the American floodplains.
artiteacher This armored giant used a deadly four-spiked tail weapon to defend against predators.
Fun Fact
Stegosaurus brain: The 30-foot-long Stegosaurus had a brain the size of a walnut, weighing just 2.8 ounces, making it incredibly small compared to its massive body.
Glossary
sauropod (noun)
A very large, herbivorous dinosaur with a long neck and tail, a small head, and four thick legs. In 1877, Arthur Lakes discovered massive bones of these creatures in Colorado's Morrison Formation.
A very large, herbivorous dinosaur with a long neck and tail, a small head, and four thick legs. In 1877, Arthur Lakes discovered massive bones of these creatures in Colorado's Morrison Formation.
Quiz
What is the informal scientific name given to the spiked tail weapon of a Stegosaurus?
Quiz
Which Jurassic predator, known from the famous fossil 'Big Al,' ruled North America before Tyrannosaurus rex?
Quiz
How did giant sauropods like Diplodocus manage to keep their massive necks light enough to lift?