VOCABULARY
down feathers
contour feathers
flight feathers
rachis
barbs
Barbule
evolution of feathers
fossil feather evidence
archeopterex
sonichedghog
BMP2
evo-devo


which line of dinosaurs do they hypothesize birds came from?

what motion of the arms of therapod dinosaurs is like the powered upstroke of flight?

what was the first hypothesis of the origins of feathers?

what overturned this first hypothesis?

what is "dinofuzz"?

what is the function of the first feather like structures?

what was the tip off of the origins for these feathers?

what are the developmental stages of feather evolution?

which genes are involved in feather development?

what is evo-devo?

describe the pattern of growth of a feather

were there intermediate stages of feather evolution found in the fossil record?  what country?

what other function were feathers in dinosaurs?
 

http://www.youtube.com/watch?v=IFKnY_YCu2s part 1
http://www.youtube.com/watch?v=spnR7GkOGzM&feature=related part 2
http://www.youtube.com/watch?v=p8B0Ug2IXEQ&feature=related part 3
http://www.youtube.com/watch?v=oTl2yBQx4C0&feature=related part 4
http://www.youtube.com/watch?v=Aw_DWPEB1n0&feature=related part 5

THE FOUR WINGED DINOSAURS
more:  http://www.pbs.org/wgbh/nova/microraptor/