In news to confirm the superiority of us right-handers (joke!), a new study says that our Neanderthal ancestors were “mostly right-handed”.

According to an article on MSNBC:

The trait of right-handedness is commonly believed to be a sign of the development of another uniquely human trait — language.

“We are right-handed because the left side of the brain controls the right side of the body, and the left side of brain is where language is processed,” study researcher David Frayer, of the University of Kansas, told LiveScience. “This is important because it tells us that they were brain lateralized just like we are, and they probably had a language capacity.”

The conclusion was reached after looking at an odd place – front teeth. Apparently ancient homo sapiens used their front teeth to help process animal hides, with their hands stretching out the hides and using tools to work it. The tool would accidentally scratch the front tooth, and the marks this made can show which hand was used to hold the tool (thus showing which hand was preferred).

According to some researchers, the discovery shows that language probably existed more than 500,000 years ago.