Maybe you can find something useful here:
Determining the age through ribs and teeth This quote is from
this article :
For scientists, the best method for narrowing down a person's age is a combination of five weighted factors known as the Complex Method. It includes analysis of the pubic bones that lie just under the navel along with some vertebral bones, both sets of which start out rough in youngsters but smooth out over time; images of the femur, or thigh bone, which becomes thinner and loses bone mineral over time; dental wear; and closure of the cranium.
ML is writing! Woohoo!
Andreia