Here's a breakdown of why there isn't a prefix:
* "Petrified" is a complete word: It stands alone and describes the fossilization process where the original material is replaced by minerals, turning into stone.
* No need for a prefix: The word "petrified" already conveys the specific type of fossilization.
* Other prefixes would be redundant: For example, using "petro-" (meaning stone) as a prefix would be redundant because "petrified" already implies the presence of stone.
Instead of a prefix, you might use terms like:
* Petrified wood
* Petrified bone
* Petrified leaves
These terms are descriptive and clearly indicate what has been petrified.