Fossils and Evolution

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Fossils and Evolution
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Amazing Events in Life History

• Sex - Who Needs It?
• We are a team - Mitochondria
• The Great Freeze 900-600 m.y. ago
• What survived and how?
• Mass Extinctions
• Dinosaurs 4th worst
• Permian extinction (220 m.y. ago) took out 90 of
  all species

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Mass Extinctions
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Classification of Dogs and Humans

• Kingdom Animalia
• Phylum Chordata
• Class Mammalia
• Order Carnivora (Dogs) Primates (Humans)
• Family Canidae Hominidae
• Genus Canis Homo
• Species familiaris sapiens

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Strigiphilus garylarsoni

• Actually, I considered this an extreme honor.
  Besides, I knew no one was going to write and ask
  to name a new species of swan after me. You have
  to grab these opportunities when they come along.

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The Five Kingdom System

• Animals
• Plants
• Protista (one-celled organisms)
• Fungi
• Bacteria
• Ediacaran Fossils? (ca. 700 m.y. ago)

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Whats Bigger Than a Kingdom?

• Bacteria differ from all other kingdoms in
  lacking a cell nucleus
• We need a bigger box
• Superkingdoms or Domains
• Monera (Bacteria)
• Archaea
• Eukarya (have cell nucleus)
• Need electron microscopes and molecular biology
  to see differences