Fossils :)
Petrified fossils!!!!
Petrfied fossils-form when minerals replace all or part of an organism.
Cast Fossils!!!!
Cast fossils- A fossil formed when an animal, plant, or other organism dies.
Mold fossils!!!!
Mold fossils- A fossil formed when an animal,plant, or other organism dies and is covered by sediment.
Carbonized Fossils!!!!
Carbonized fossils- A fossil formed when an animal,plant or other organism dies is covered by sediment.
Preserved Remains!!!!
Preserved fossils- A prehistoric organim or is slang for someone or something that is old and outdated.
Trace Fossils!!!!
Trace fossils- a fossils of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself.
Index Fossil!!!!
They are unique, prevalent, plentiful and restricted in geologic time. Most fossils are from ocean rocks, so most major index fossils are from marine organisms. However, young rocks found in certain regions are useful for revealing the fossils of land organisms.
Example: Ammonites were common during the Mesozoic Era
Example: Ammonites were common during the Mesozoic Era