Re: *Microraptor* the biplane: published

[David Marjanovic <david.marjanovic@gmx.at>]

> What sort of fossil would cinch either side?  If there definitively *was* 
> a
> biplane stage, what might we one day find?

At least two double-decked basal bird clades.

>  If there definitively *was not*
> a biplane stage, what would we find instead?

At least two single-decked basal dromaeosaur clades ("dromaeosaur" here 
actually meaning "everything closer to *Microraptor* than to birds").