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RE: Archie a non-flyer? (was:Re: origin of bats/reply 2 to TMK)
Jaime Headden wrote:
> Yes, and I noted a week or so ago that beyond a limited range in southern
> Germany, Archie is otherwise unknown.
cf. _Archaeopteryx_ teeth have been recorded from Guimarota, but they don't
> This suggests it was limited in extent, and possibly in ability to extend its
I've wondered this myself. _Archaeopteryx_'s insular habitat might have had an
impact on its morphology. Then again, birds with similar bauplans are found
elsewhere (e.g., _Jeholornis_, _Jixiangornis_).
> The range may be analogous to the range of the solitaires
> and dodos in the near-Madagascan islands of the Indian Ocean, which arrived
> there when flighted, then lost the ability fairly rapidly.
They also shrunk their wings pretty rapidly too. No sign of that in
_Archaeopteryx_. If you're indeed arguing that _Archaeopteryx_ was
secondarily flightless, that is. If so, there could be an argument that
_Archaeopteryx_'s forelimbs could resume a predatory role, given that the manus
was not yet fully absorbed into the flight apparatus.
> It may also be the largest non-fully terrestrial carnivore in the Solnhofen
> limestone, given that crocs were confined to the water for the
> most part,
How big did the Solnhofen pterosaurs get?
>*Compsognathus*/*Juravenator* were probably the arch terrestrial predator, but
>that may not leave much more to its habitat. I
> don't think its diet is even fairly grounded at this point. Recurved,
> compressed, small, relatively even teeth imply some possible
> insectivory, and I am sure the teeth of *Compsognathus* imply more
> flesh-processing capability.
The type specimen of _Compsognathus_ has a small lizard (_Bavarisaurus_) in its
stomach; and the related GMV 2124 (formerly _Sinosauropteryx_) includes mammal
jaws in its stomach contents. So small vertebrate prey would appear to be
favored by these particular theropods.
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