Fossils and Evolution.

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Presentation transcript:

Fossils and Evolution

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

Mass Extinctions

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

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.” Strigiphilus garylarsoni

The Five Kingdom System Animals Plants Protista (one-celled organisms) Fungi Bacteria* Ediacaran Fossils? (ca. 700 m.y. ago)

What’s 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