Mammoth carbon dating
Because elephants typically replace their molars about six times in their lives, identifying which pair of molars the mammoth had, as well as studying the wear on those teeth, can reveal soemthing about the mammoth's age.
In this case, the team determined that Buttercup was in her mid-50s when she died.
The fact is, carbon dating can only be used to date things up to approximately 50,000 years old.
In fact, if an object contains (radioactive) carbon, this should be a clue that the object may not be any older than 50,000 years.
In May 2013, scientists from the Siberian Northeastern Federal University heard that mammoth tusks were sticking out of the permafrost on Maly Lyakhovsky Island in nothern Siberia.