History Of Animals

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History Of Animals

  1. 1. History & Domestication of Animals By Mr. “Go Knights” Chapman
  2. 4. History of Animals <ul><li>The Earth is about how old? </li></ul><ul><li>4.5 Billion years old </li></ul><ul><li>The first sign of life was about 3.5 BYA., which was bacteria or algae. </li></ul><ul><li>The first animal showed up around 2.5 BYA, which were sponges. </li></ul>
  3. 9. Animal History <ul><li>What do you think happened 2.2 BYA that allowed organisms to move out of water and onto land? </li></ul><ul><li>1. Oxygen was produced by algae/bacteria in the atmosphere. </li></ul><ul><li>2. The free O 2 formed the ozone layer, which filters UV rays. </li></ul>
  4. 11. Important Dates <ul><li>First invertebrates appeared on land about 420 MYA. </li></ul><ul><li>Fish 400 MYA </li></ul><ul><li>Amphibians appeared about 370 MYA. </li></ul><ul><li>Reptiles appeared about 300 MYA. </li></ul>
  5. 12. Important Dates <ul><li>First Birds and mammals appeared about 180 MYA. </li></ul><ul><li>Dinosaurs become extinct about 135-70 MYA, which allowed mammals to dominate. </li></ul>
  6. 13. Domestic. Of Animals <ul><li>Most likely began when hunters brought back the young of animals they killed. </li></ul><ul><li>What do you think was the first animal domesticated? </li></ul><ul><li>Wolves </li></ul>
  7. 15. Wolves <ul><li>Hung around villages looking for meals </li></ul><ul><li>Wolf cubs were domesticated for companion </li></ul><ul><li>Used for : </li></ul><ul><li>Warning </li></ul><ul><li>Protection </li></ul><ul><li>Hunting </li></ul><ul><li>First dog jawbone found in a cave in Iraq </li></ul><ul><ul><li>About 12,000 year ago </li></ul></ul>
  8. 17. Cats <ul><li>Cats date back about 3,500 years ago </li></ul><ul><li>Where do you think first pictures were found? </li></ul><ul><li>Egyptian tombs </li></ul><ul><li>Cats brought pleasure, companionship, and controlled rats and mice. </li></ul>
  9. 19. Classification <ul><li>Dichotomous Key – is a tool used to classify or identify an animal by its characteristics. </li></ul>
  10. 20. Assignment <ul><li>Use the book to find the following things: </li></ul><ul><ul><li>Page 7 </li></ul></ul><ul><ul><li>Characteristics of animals in the phylum Chordata. </li></ul></ul><ul><ul><li>A brief description of the 4 classes of animals that we will be discussing. </li></ul></ul><ul><li>Answer discussion questions 1-5 on page 8. </li></ul>

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