>>32943431It's C.
Also, it makes sense because a fossil is when rock sediments "leak" in to the mostly porous sponge-like nature of bones and shit, thus making a sort of bone/rock hybrid.
I bet you these pokemon were something else originally typewise, but became corrupted as a result of the revival process.
The question is:
Why hasn't Pokemon created a reboot of Fossil pokemon with their original type, and what types would these pokemon originally had?