Wyrdsmyth

A. Ever see a flying squirrel?

Asha'man

Wait, we aren't done yet!

Q. What would a quarter of a wing look like?

A. Ever seen a flying snake?

Roller

Erm... Actually, I believe that squirrel does not have wings. Now even half of it. It has membranes that are used for gliding.

Perhaps half a wing would not be used for flying. Not even propelling. But it could be a good insulation.

I've taken this too serious...

Doubting Didymus

And bats use the same membranes for flying. Half a membrane-wing is for gliding, a whole membrane-wing is for flying. There is an uninterrupted line of hypothetical gradual transitionals linking those two extant forms.

Roller

Hello!

I guess my mistake is that I expect all mammals to have wings as in bats. With all five digits in the wing, and squirrel would be pretty far from it.

Doubting Didymus

Nonetheless, bats would almost certainly have once used gliding membranes very similar to flying squirrels. (I have never seen one, so I'm assuming they look like our marsupial gliders):

Roller

Really cool picture! Flying phalanger, I presume? Meet Glaucomys sabrinas, Northern Flying Squirrel:

Calzaer

Awww, it's CUTE!

Demigawd

Rocky there should be the mascot for pro-evolution education.

Doubting Didymus

Lets appoint three mascots. Rocky, with half a wing....



Squidgy, with half an eye. (Most snail eyes don't work for actual vision, they are simply directional light sensors.)



coely, with half a leg.