I find it difficult to believe a tooth or bones can sit in the ground for a 560,000 years...204,400,000 days...
I don't necessarily buy into the 10,000 creationist theory either...
Somewhere in the middle is the truth...
Teeth and bones don’t just sit there as teeth and bones. They are gradually infiltrated with minerals in the ground and water and become fossils which are minerals/stones, which have a very long life indeed.