the fossil record
Post on 01-Jan-2016
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The Fossil Record Life ScienceMr. P
Remember…
• Fossils are one piece of evidence for evolution
What are fossils?
• Fossils are naturally preserved remains, imprints, or traces of organisms that lived a long time ago
• A paleontologist is the person who studies fossils
When do fossils form?• The animal or plant decomposes, leaving only
the hard body structure
There are four types of fossils
• Molds• Casts• Trace Fossils• Body Fossils
Mold FossilsMold-imprints from a shell
or skin of an animal
Cast Fossils
• Cast-when these molds are filled with minerals from groundwater
Trace Fossils
• Trace fossils are the remains of animals from the past, including footprints, bite marks, nests, and animal droppings
Body Fossil
• Complete organism is preserved, usually from being frozen, in amber, or in tar.
• Example: Jurassic Park “Mosquito”
Review
• What kind of fossil is this?
• A) Casts• B) Molds• C) Trace Fossils• D) Body Fossils
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