Post on 16-Feb-2016
description
Fossil Records
By: Kate, Susannah, Emma, and Anne
What is a Fossil?
• The prehistoric remains of an animal or a plant• Can be dated through carbon dating.• Study of Fossil is Paleontology
Fossil Facts
• Age of earliest fossil: about 3.8 billion years old.
• It was a fossil of a cyanobacteria
Evidence that support evolution
• Provides snapshots of the past.• They illustrate a panorama of evolutionary
change over the past four billion years.• There may be bits missing, but fossil evidence
clearly shows that life is old and has changed over time.
Source: http://evolution.berkeley.edu/evolibrary/article/0_0_0/lines_02
What parts are fossilized
• Footprints/ prints• Bones• Seeds• Leaves• Ripple marks in a prehistoric shore• Eggs• Dinosaur dung
Formation of Fossils
• Fossils can form in Amber• Buried in mud• Either in or over the sediment of rocks• Animals can be trapped from natural disasters
Method of dating(Radioactive decay)
• Also known as carbon dating• Arranges it through oldest to newest.• Creates sequence in chronological order and
can see where speciation occurred or evolution.
• Used to compare living species to past species and can know how old they were by dating the bones.