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

Long held views of how and Long held views of how and why feathers evolved have why feathers evolved have

now been overturned.now been overturned.

Hair, Scales, etc…Hair, Scales, etc…Tubular FeatherTubular Feather EvolutionEvolution Dino or BirdDino or Bird A Fresh LookA Fresh Look

Feathers Evolved In Feathers Evolved In Carnivorous DinosaursCarnivorous Dinosaurs

Did feathers evolve Did feathers evolve from elongated from elongated scales?scales?

Did feathers evolve Did feathers evolve for flight?for flight?

Did feathers Did feathers originate with originate with birds?birds?

No, we now know No, we now know feathers are feathers are modified skin cells.modified skin cells.

No, Evidence shows No, Evidence shows that feathers that feathers evolved for warmth.evolved for warmth.

No. New discoveries No. New discoveries in China prove that…in China prove that…

Hair, Scales, Fur, Hair, Scales, Fur, FeathersFeathers


Totally Tubular FeathersTotally Tubular Feathers


Evolution Comes To The Evolution Comes To The FeatherFeather

Stage 1: Small Stage 1: Small hollow tubes from hollow tubes from skin.skin.Stage 2: Downy Stage 2: Downy feathers form.feathers form.Stage 3: Barbs Stage 3: Barbs develop to hold develop to hold feather together.feather together.Stage 4: A closed Stage 4: A closed hollow vein develops hollow vein develops in the middle.in the middle.Stage 5: Stage 5: Asymmetrical flight Asymmetrical flight feathersfeathers

Stage 1 Animal: Stage 1 Animal: AllosaurusAllosaurusStage 2 Animal: Stage 2 Animal: BeipiaosaurusBeipiaosaurusStage 3 Animal: Stage 3 Animal: Tyrannosaurus RexTyrannosaurus RexStage 4 Animal: Stage 4 Animal: VelociraptorVelociraptor

Stage 5 Animals: Stage 5 Animals: Microraptors, Microraptors, ArchaeopteryxArchaeopteryx


Dinosaur Or Bird?Dinosaur Or Bird?

Archaeopteryx;

Archaeopteryx;

The earliest known bird

The earliest known bird..

Microraptor gui;

Microraptor gui;

One of the latest d

inosaurs.

One of the latest d

inosaurs.

Both were capable of flight…Both were capable of flight…

Both had nearly identical bone structures…Both had nearly identical bone structures…

And both now tell us what happened to the dinosaurs…And both now tell us what happened to the dinosaurs…


A Fresh LookA Fresh Look

Sinosauropte

Sinosauropte

ryxryx

CaudipteryxCaudipteryx

Archaeopteryx

Archaeopteryx

DeinonychusDeinonychus

Baby T-RexBaby T-Rex

OstrichOstrich

Bald Eagle

Bald Eagle TyrannosauroidTyrannosauroid

So, which came first, the feather or the bird??So, which came first, the feather or the bird??

The answer is: NEITHER ONE!The answer is: NEITHER ONE!

They both came from the same place…They both came from the same place…

DINOSAURSDINOSAURS

……And And THEYTHEY came first. came first.

Most of the photos and information Most of the photos and information for this presentation were taken for this presentation were taken

from “Scientific America” June 21from “Scientific America” June 21stst Special Edition,“Which Came First, Special Edition,“Which Came First,

The Feather Or The Bird?”The Feather Or The Bird?”

Adapted for PowerPoint By: Steven Adapted for PowerPoint By: Steven Eric Pohl.Eric Pohl.

Any mistakes of fact or Any mistakes of fact or interpretation are mine and mine interpretation are mine and mine

alone.alone.

Music sample taken from “Silent Music sample taken from “Silent Scorn” by Megadeth.Scorn” by Megadeth.

Dialogue sample taken from Dialogue sample taken from “Jurassic Park” spoken by Samual “Jurassic Park” spoken by Samual

L. Jackson L. Jackson

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

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