Re: Fastovsky vs Archibald

[Tim Donovan <uwrk2@yahoo.com>]

--- David Marjanovic <david.marjanovic@gmx.at> wrote:
 
> >The lower part is 
> > predominantly sandstones, with the upper part
> consisting primarily of 
> > paleosols.
> 
> Does this mean that the lower Hell Creek Fm contains
> many fossils that were 
> swept in from far away,

  Some, maybe not many. Boyd said that the putative
Hypacrosaurus from the lower Hell Creek "is definitely
found with typical Lancian dinosaurs." The occurrence
of the lambeosaur and AMNH 5895 in the lower Hell
Creek may reflect a preference for drier, more inland
habitats, which would've prevailed early in Hell Creek
time if a transgression were underway. Or at least
those environments would've been closer, making it
more likely that well inland forms ended up in the
lower Hell Creek. But the absence of lambeosaurs from
the lower Scollard is hard to explain, unless they
were gone altogether by then.


 



                
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