Yes it is.
It is called replacement .
The shell membrane is a thin tissue structure upon which the mineralized shell is built.
Mineralized fossils can be found in sedimentary rocks such as shale, limestone, and sandstone. They are often located in areas where there was once a high concentration of marine life, such as ancient seabeds or riverbeds. Paleontologists and fossil collectors frequently search for mineralized fossils in regions known for their fossil-rich deposits.
A trace fossil can be anything from a coprolite (faeces) to a footprint. It is anything which proves the creature's existence without being the actual creature itself. For example, an ammonite shell is proof of its individual existence, but its faeces give us little information about its appearance. A fossil could be a cast, mold, or true form fossil.
Nothing. Something must contain carbon to be carbon dated. By definition fossils are mineralized and contain no carbon.
brachiopod
All of them, in fact. There are no bits of flesh still present in a millions-of-years-old fossil; it's all mineralized.
A hard shell organism have more of a chance to become a fossil .
cover fossil (or japanese translation shell fossil) then tirtouga (level 37) carracosta.
When an ancient animal for example Tortoise or snail die in its shell....years later another tortoise or snail can fit itself in the fossil shell.
No
No, a thin cavity in a rock showing where a shell has decayed is not considered a fossil. Fossils are the preserved remains or traces of ancient organisms, such as bones, shells, or imprints, that have been naturally preserved in rock or sediment over time. The empty space left behind by a decayed shell would be considered a mold or cast, not a fossil.