We found 13 resources with the concept tyrannosaurus rex
How the T-Rex Lost Its Arms
8 mins 6th - 12th CCSS: Adaptable
The Tyrannosaurs Rex grew up to 20 feet tall, yet their front arms were roughly the size of human arms—hardly proportional! Viewers see how the front limbs became smaller over the course of millions of years. PBS Eons goes on to explain...