How do you know? What evidence do you have to support this assertion?
However, in a situation where the dinosaur bone has been prevented from being invaded by mineral-rich water, one would expect that over millions of years, even locked away from all bacterial agents, dinosaur bone would, in obeying the laws of thermodynamics,3 just disintegrate from the random motions of the molecules therein.
http://www.answersingenesis.org/creation/v21/i1/dinosaurbones.asp
B. What is required to prove the evolution case to you and to me?
1. Show us thousands of series of fossils which prove that a slow process of evolution “created”, one after the other, thousands of new complex biological designs. For example, there should be a series of fossils to show the slow, gradual evolution of a backbone. There should be a series of fossils to show the step-by-step evolution of reptile scales into bird feathers.
2. Devise an experimentally testable theory of genetics to explain how evolution “created” a backbone or changed reptile scales into bird feathers.
3. Discover the mechanisms of genetics and embryonic development which are able to “create” complex new biological designs.
4. Show us the evolution of complex new biological designs happening in nature today.
http://www.parentcompany.com/creation_essays/essay45.htm