How is it that some dinosaur bones don’t decompose after millions of years? What keeps them so well preserved compared to the remains of dead animals normally?

Question

How is it that some dinosaur bones don’t decompose after millions of years? What keeps them so well preserved compared to the remains of dead animals normally?

In: 4

Answer 1

They do.
They aren’t.

In certain circumstances, Dinosaur bones decompose in a specific way to be replaced by minerals. This is “fossilization”. There is no bone of any dinosaur still remaining anywhere. It’s all fossils. They’re all bone shaped rocks.