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Re: [Re: [Re: Feathered/scaly theropods: trying to make the point.]]

HPB1956@aol.com wrote:

>   If feathery integumentary structures where added later on due to     >  
vagaries of the process of fossilation? Then we should have found    >   also
some other groups of "feathered" fossils (e.g. frogs). But so    >   far only
(nonavian) dinosaurs and birds where found with such.


Couldn't it have been contamination that occured at the time of fossilization
and not later (e.g. they fell on some funky plant?) and not have occured later
on. As for non-dinosaurian finds with this integument, I agree that if this
was contamination then we should see it on other taxons, and I wouldn't be
surprised if we already have, but overlooked it. When was the last time one
heard of any non-dinosaurian/non-avian finds from that locations. 

So far I've heard of a possible ornithopod and that one pteradactyl, but
that's it. 

Why pterosaurs don't want to preserve anything upon fossilization is beyond
me. Even ramphorhynchoides in Solnholfen don't seem to preserve fur.

"David Marjanovic" <david.marjanovic@gmx.at> wrote:

> Several nondinosaurian diapsids (Monjurosuchus, Hyphalosaurus) as well > as
AFAIK Psittacosaurus from the same sites have preserved scales.


So I'm told; does anyone have the refs to these finds. I'd love to see these
guys myself.


HPB1956@aol.com wrote:

> Another point, how would you explain that the integument of birds where 
> preserved correctly, while that of (nonavian) dinosaurs wasn't?


I'm not sure if they were. I've been trying to find the _Confusciornis_ paper,
but have had no luck and fear it might be in a Chinese journal, in which case
I'm out of luck. I don't know of any other bird finds there (excluding recent
mentions on the list).


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