Mold fossil formed when remains trapped tree sap
cast fossil impressions from very thin objects trapped in mud and transformed into rock
trace fossil formed when remains of living things leave and impression on a rock
petrified fossil preserved remains that are transformed into rock
imprint fossil preserved records of life like a footprint or a trail imprint fossils a raised fossil that has filled in the impression from
amber fossil a raised fossil that has filled in the impression from a mold

Amber fossil is formed when remains are trapped tree sap 

Petrified fossil are preserved remains that are transformed into rock.

Imprint fossils are impressions from very thin objects trapped in mud and transformed into rock.

Trace fossils are preserved records of life like a footprint or a trail imprint fossils a raised fossil that has filled in the impression from.

Mold fossils are formed when remains of living things leave an impression on a rock.

Cast fossils are a raised fossils that have filled in the impression from a mold.

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