Re: Scales, hair, integumentary structure relationships?

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

>  I am curious as to the source of info that a single phalanx would be the 
> product of a fusion, rather than simply losing the distal elements of the 
> digit?

Published illustrations of *Sapeornis*, *Jibeinia*, *Eocathayornis*, 
*Protopteryx* and the like.

I don't have any evidence from development for either hypothesis. Can 
someone help me out there?