tracing evolutionary history. macroevolution dating prehistoric material radioactive isotopes carbon...
Post on 21-Dec-2015
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Tracing Evolutionary History
Macroevolution
Dating Prehistoric Material
• Radioactive Isotopes
• Carbon 14
• Potassium 40
Continental Drift
San Andreas Fault
Extinction events
Potential Causes
• Bottom line is we’re not totally sure.
• What evidence do we have?
• Many theories– Meteor– Continental drift– Increased volcanic activity
Key Adaptations
• Extinctions followed by explosive increase in diversity among remaining species
• What allowed certain species to survive?– Key adaptations
• Cretaceous adaptations
Paedomorphosis
Taxonomy
• Classification & naming of life
• Carolus Linnaeus– Binomial nomenclature– Name includes Genus & species levels of
organization
Systematic Classification
Phylogenitics