RE: T. rex as ankylosaur specialist

[bucketfoot-al@justice.com]

Actually Ken, if you consider my earlier comment that
TRex would probably only go after juvenile
Ankylosaurids, I think it would have been feasible for
it to bite down on the neck/head while leveraging one
foot on top of the Ankylosaurus (and necessary to keep
the animal from thrashing out of the grip of the TRex
Jaws.)

No TRex in its right mind would go after a full-grown
Ankylosaurid, I agree completely on that.  The adults
would probably have been close to impervious to attack,
and you correclty point out one of the reasons why the
'frontal attack' on an adult Ankylosaur would not have
been likely to succeed....

On Thu, 1 Jun 2006 12:15:42 -0600,
Ken.Carpenter@dmns.org wrote:

> 
> Sorry, no, it does not make sense. Both Edmontonia and
> Ankylosaurus
> (Hell Creek and Lance Fms) were too tall and massive
> for a T rex to hold
> down with one foot. 
> 
> 
> Kenneth Carpenter, Ph.D.
> Curator of Lower Vertebrate Paleontology/
> Chief Preparator
> Department of Earth Sciences
> Denver Museum of Nature & Science
> 2001 Colorado Blvd.
> Denver, CO 80205
>  
> Phone: 303-370-6392
> Fax: 303-331-6492
> 
> for PDFs of some of my publications, as well as
> information of the Cedar
> Mountain Project: 
>
https://scientists.dmns.org/sites/kencarpenter/default.aspx
> ++++++++++++++++++
> 
> -----Original Message-----
> From: owner-DINOSAUR@usc.edu
> [mailto:owner-DINOSAUR@usc.edu] On Behalf
> Of bucketfoot-al@justice.com
> Sent: Thursday, June 01, 2006 12:13 PM
> To: Jerzy.Dyczkowski@unibas.ch
> Cc: dinosaur@usc.edu
> Subject: RE: T. rex as ankylosaur specialist
> 
> Good point.  However I still think hat my head/neck
> bite hypothesis
> makes more sense...because as it bit down on the
> neck/head of the
> Ankylosaur the TRex could have placed one foot on top
> of the
> Ankylosaur's back, pushing it down to immobilize it
> under its own weight
> and allowing the TRex to get a more secure death grip,
> which it could
> hold til the animal died...does this makes sense to
the
> palaeontologists
> out there?
> 
> On Thu,  1 Jun 2006 20:02:53 +0200,
> Jerzy.Dyczkowski@unibas.ch wrote:
> 
> > 
> > Quoting bucketfoot-al@justice.com:
> > 
> > > Well, I suppose TRex might have been able to
'flip'
> a
> > > small Ankylosaur, but a full-grown one would have
> been
> > > impossible to flip given the respective centres of
> gravity and body 
> > > mass
> > 
> > I thought that ankylosaurids were not flipped
> completely upside down, 
> > but just bent enough to expose sides and legs from a
> killing bite. 
> > Armor of some ankylosaurids has a frill of spikes
> pointing sideways, 
> > clearly protecting lower body from bite from above.
> > 
> > Jerzy Dyczkowski
> > 
> > 
> > 
> > 
> > 
> >
>
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