1.) Trace Fossil: Any indirect evidence left by an organism. 2.) Molds and Casts: An impression of an organism. 3.) Replacement: original material of an organism; replaces with minerals that can leave detailed replicas of hard or soft parts. 4.) Petrified or Per-mineralized: empty pore spaces are filled by minerals such as wood. 5.) Amber: preserved tree sap traps an entire organism. 6.) Original Material: mummification or freezing preserves original organism. Hope this helps :)
