Evolution of a Mythic Creature DRAGONS!
Ancestry <ul><li>Related to modern reptiles (dinosaurs, modern alligators and crocodiles) </li></ul>
Phylogenetic Tree Common Lizard Ancestor Modern Lizards Dinosaur Dragon
Environmental Conditions <ul><li>Dragons are generally they are found in rocky or mountainous environments either at high ...
Adaptations <ul><li>Flying is achieved through specialized membranes and jumping into the windy updrafts provided by the c...
Adaptations <ul><li>Dragons are a top predator, with sharp teeth and claws, similar to eagles. </li></ul>
6 limbs?
Where did the 3 rd  pair come from?
Homologous Structures <ul><li>Common ancestry with other reptile species is evident with leathery skin and cold blooded na...
Analogous Structures <ul><li>The Dragon wing is analogous to a bird wing.  Both provide a flight mechanism. </li></ul>
Vestigial Structures <ul><li>Modern Alligators have a bony structure right behind the eyes – remnants of dragon horns </li...
Extinction <ul><li>Top/large predators will always have a low population level as the amount of prey to needed sustain the...
Extinction <ul><li>Ancestral dragons would gather yearly in global flights.  At this time mating would happen.  </li></ul>
Extinction <ul><li>As humans encroached further and further into their remote territories, they removed the dragon’s natur...
Extinction
Extinction <ul><li>Removal of individual dragons from the gene pool lead to increased inbreeding among the remaining drago...
<ul><li>Could you believe in dragons now? </li></ul>
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Evolution Of Dragons

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I use this presentation to model an optional evolution project "The Evolutionary History of a Mythological Creature"

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Evolution Of Dragons

  1. 1. Evolution of a Mythic Creature DRAGONS!
  2. 2. Ancestry <ul><li>Related to modern reptiles (dinosaurs, modern alligators and crocodiles) </li></ul>
  3. 3. Phylogenetic Tree Common Lizard Ancestor Modern Lizards Dinosaur Dragon
  4. 4. Environmental Conditions <ul><li>Dragons are generally they are found in rocky or mountainous environments either at high altitudes or living near seaside cliffs </li></ul>
  5. 5. Adaptations <ul><li>Flying is achieved through specialized membranes and jumping into the windy updrafts provided by the currents. </li></ul>
  6. 6. Adaptations <ul><li>Dragons are a top predator, with sharp teeth and claws, similar to eagles. </li></ul>
  7. 7. 6 limbs?
  8. 8. Where did the 3 rd pair come from?
  9. 9. Homologous Structures <ul><li>Common ancestry with other reptile species is evident with leathery skin and cold blooded nature. </li></ul>Komodo Dragon Skin (Type of Lizard)
  10. 10. Analogous Structures <ul><li>The Dragon wing is analogous to a bird wing. Both provide a flight mechanism. </li></ul>
  11. 11. Vestigial Structures <ul><li>Modern Alligators have a bony structure right behind the eyes – remnants of dragon horns </li></ul>
  12. 12. Extinction <ul><li>Top/large predators will always have a low population level as the amount of prey to needed sustain them will be correspondingly high. </li></ul><ul><li>Dragons required hundreds of square miles to obtain enough prey. </li></ul><ul><li>Global population was very low </li></ul>Dragons Deer Plants
  13. 13. Extinction <ul><li>Ancestral dragons would gather yearly in global flights. At this time mating would happen. </li></ul>
  14. 14. Extinction <ul><li>As humans encroached further and further into their remote territories, they removed the dragon’s natural food sources and brought new ones – cattle and sheep. </li></ul><ul><li>Subsequent predation (hunting) of the cattle and sheep meant the dragons became the hunted. </li></ul>
  15. 15. Extinction
  16. 16. Extinction <ul><li>Removal of individual dragons from the gene pool lead to increased inbreeding among the remaining dragons. </li></ul><ul><li>Eventual extinction resulted from a loss of habitat, genetic weakness and human competition. </li></ul>
  17. 17. <ul><li>Could you believe in dragons now? </li></ul>

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