Fossils Page
Petrified fossil!!!
Petrified fossil-form when minerals replace all or part of an organism.
Cast fossil!!
Cast fossil-A fossil formed when an animal, plant, or other organism dies.s
Mold fossil
Mold fossil-A fossil formed when an animal, plant, or other organism dies and is covered by sediment.
Carbonized fossil-
Carbonized fossil- A fossil formed when an animal, plant, or other organism dies and is covered by sediment.
Preserved Remains
Preserved Remains- a prehistoric organism or is slang for someone or something that is old and outdated.
Trace fossil
trace fossil-a fossil 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