Aging Whitetail deer

[Push Farms]

I was wondering if any one knows where I can send teeth to get the age of deer. I shot a five by four that will score in the 140's.
But would like to find out a true age. Guessing to be a four in a half. I have the lower jaw. Thanks
Good hunting and be safe
P.S frist post hope we did it right

 

[Big Timber]

Try this site, hope it helps. http://www.npwrc.usgs.gov/resource/tools/deerteth/deerteth.htm
BT