How the T-Rex Lost Its Arms

One of the largest land carnivores ever to walk the Earth also had such small arms they might have been useless. With no T-Rexes around to study, the only thing to make guesses from are fossils, and there aren't too many of those around. PBS Eons looks at what we do and don't know about T-Rex and those funny little arms.

Your crate × Close

Free shipping over $200 in the U.S.
International rates at checkout. We're proud to offer a discount to Military, Nurses, and First Responders.