What are the different types of fossils?

The different types of fossils include:

• Petrified fossils
• Molds fossils
• Casts fossils
• Carbon films
• Preserved remains
• Trace fossils

  Each of them form in different ways...

  Petrified fossils:
  Fossils often form when an organism’s remains become petrified, or “turned into stone.” In this process, mineral-rich water soaks into the small cavities and pores of the original organ- ism. The minerals precipitate from the water and fill the spaces.

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  Casts fossils:
  Cast fossils are created if the hollow spaces of a mold are later filled with mineral matter.

  (From Google Image)

  Preserved remains:

  Sometimes, fossilization preserves all or part of an organism with relatively little change. The mammoth frozen in permafrost is one example. Another example is insects preserved in amber—the hardened resin, or sap, of ancient trees. The fly in Figure 10E was preserved after being trapped in a drop of sticky resin. Fossils can also form when remains are preserved in tar. Tar is thick petroleum that collects in pools at the surface. The La Brea Tar Pits in Los Angeles, California, have yielded preserved remains of ice-age mammals such as mastodons and sabre-toothed cats.

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