[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
RE: Microraptor preyed on birds (official paper in PNAS)
> Date: Wed, 23 Nov 2011 23:58:54 +0100
> From: email@example.com
> To: firstname.lastname@example.org
> Subject: Re: Microraptor preyed on birds (official paper in PNAS)
> > Admittedly, in terms of scansorial/arboreal adaptations, the pedal
> > modifications are hardly compelling. The quantitative and
> > qualitative analyses of Dececchi and Larsson (2011) explicitly
> > rejected arboreality in _Microraptor_ (and archaeopterygids too).
> > This study focused on the lack of branch-grasping adaptations and
> > limited limb joint mobility in _Microraptor_, which makes it
> > extremely unlikely that this theropod could move about within the
> > tree-crown, or descend tree trunks. However, the sort of
> > trunk-scaling envisioned by O'Connor &c (Fig. 3) does not entail
> > branch-grasping.
> I'll have to try to find out if the hindlimbs are much too long for
> trunk-climbing. The lower legs in particular are unusually _long_, not
> short as expected in an animal that has parasagittal legs and needs to
> hold its center of gravity as close to the tree trunk as possible.
If the argument(s) for _Microraptor_ not being tree-dwelling is its lack of
foot- and hand-adaptations...then aren't long legs exactly what we should/would
*expect* to see?
As others have said, _Microraptor_ isn't a mammal, so aren't longer hind limbs
than forelimbs exactly what we would expect to see?