Moreover , in 2005 , a new complete skull cranium was found : D4500 .
Skull D2280 is inferred to have been an adult around 25 -- 30 years old at the time of death .
In 2005 , a new complete skull cranium was found : D4500 .
Skull D2280 is inferred to have been an adult around 25 -- 30 years old at the time of death .