Long held views of how and why feathers evolved have now been overturned.

1. Which Came First, The Feather Or The Bird? Long held views of how and why feathers evolved have now been overturned.

2. Did feathers evolve from elongated scales? Did feathers evolve for flight? Did feathers originate with birds? No, we now know feathers are modified skin cells. No, Evidence shows that feathers evolved for warmth. No. New discoveries in China prove that… Hair, Scales, Fur, Feathers Feathers Evolved In Carnivorous Dinosaurs

3. Totally Tubular Feathers

4. Stage 1: Small hollow tubes from skin. Stage 2: Downy feathers form. Stage 3: Barbs develop to hold feather together. Stage 4: A closed hollow vein develops in the middle. Stage 5: Asymmetrical flight feathers Stage 1 Animal: Allosaurus Stage 2 Animal: Beipiaosaurus Stage 3 Animal: Tyrannosaurus Rex Stage 4 Animal: Velociraptor Stage 5 Animals: Microraptors, Archaeopteryx Evolution Comes To The Feather

5. Dinosaur Or Bird? Both were capable of flight… Both had nearly identical bone structures… And both now tell us what happened to the dinosaurs… THERE STILL HERE!!! Archaeopteryx; The earliest known bird. Microraptor gui; One of the latest dinosaurs.

6. A Fresh Look They both came from the same place… So, which came first, the feather or the bird?? Ostrich The answer is: NEITHER ONE! Caudipteryx …And THEY came first. Sinosauropteryx Deinonychus DINOSAURS Tyrannosauroid Bald Eagle Archaeopteryx Baby T-Rex

7. The End Most of the photos and information for this presentation were taken from “Scientific America” June 21st Special Edition,“Which Came First, The Feather Or The Bird?” Adapted for PowerPoint By: Steven Eric Pohl. Any mistakes of fact or interpretation are mine and mine alone. Music sample taken from “Silent Scorn” by Megadeth. Dialogue sample taken from “Jurassic Park” spoken by Samual L. Jackson