Topics of this game:
- The preserved remains or traces of an organism that lived in the past.
- A fossil formed when an organism buried in sediment dissolves, leaving a hollow area.
- A type of fossil that forms when a mold becomes filled in with minerals that then harden.
- A fossil formed when minerals replace all or part of an organism.
- A fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself.
