15-Foot-Long Dinosaur Tail Uncovered In Mexico [PICTURE]

This is pretty cool. Every once in awhile, you can find a fossil in your backyard, and maybe even some bones from an animal from years ago. But how about a 15-foot-long dinosaur tail?

The scientists say that this is approximately 72 million years old!!!! The interesting part is that this tail is only half of what the full length of the dinosaur probably measured.