[From many - one.]

Interesting. L'd never heard of 4 wing dinosaurs.

[Ernest_at_the_Beach]

A Biplane dinosaur.....now I've heard of everything.

[SmartAZ]

There has been so much fraud in this subject, like about 100%, that I'm surprised anybody would put his real name on a story like this.

[RegulatorCountry]

"Either it was an evolutionary experiment in one group of dinosaurs that eventually failed ..."

They weren't just biplanes, they were scientists too!

[LurkedLongEnough]

Do they know if any of these dinosaurs had ivory beaks?

[ColdSteelTalon]

A biplane wing is a more complex design too. I wonder.

[Teacher317]

The team realised that this wing configuration could not provide a Microraptor with powered flight; the dinosaurs would have been capable only of gliding. More importantly, the dinosaur had no way of lifting their wings up, so during a ground-based take-off the wings would have been damaged.
By analysing the dinosaur's aerodynamics, the researchers calculated that Microraptor could have travelled more than 40 metres with a small jump from a tall tree. It would have fallen quickly to begin with, but then could have swooped back up to land on the branch of another tree.

So they were merely falling... with style. ;^)

/Toy Story

[Tanniker Smith]

Curse you, Red Baronosaurus!!

[laweeks]

I thought that pigs could fly once too. Ham on the Fly.

[FastCoyote]

Now this is worth looking at.

[LiteKeeper]

YEC INTREP

[Ernest_at_the_Beach]

From the BBC:

Flying dinos had bi-plane design