Baby Mammoth

Here is a Reuters video about a baby mammoth.

Quote: "July. 10 - The remains of a baby mammoth which died 10,000 years ago in the ice age have been found in Siberia."

How do they know it was 10,000 years ago?

Did the mammoth have dated coins in its pocket? Or a dated certificate of death around its neck?

They are guessing. I just wish they would say they were guessing instead of stating things like they were fact.

Link