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Re: How Did Hadrosaurs Defend Their Young?

Does anybody know enough about dinosaur hearing and hadrosaur pitches (I know studies have been done on both recently) to say if it was possible that a hadrosaur may be able to trumpet at a certain pitch that could hurt or dissorientate an attacking therapod?
Perhaps it would take a whole herd of hadrosaurs to drive off a small pack of therapods but my guess is it may be possible.

Ben Hughes
The Australian Discworld Convention - www.ausdwcon.org

From: Ivan Kwan <dino_rampage@hotmail.com>
Reply-To: dino_rampage@hotmail.com
To: dinosaur@usc.edu
Subject: Re: How Did Hadrosaurs Defend Their Young?
Date: Wed, 08 Feb 2006 04:27:58 +0800

I would think mobbing by several adults would be enough to deter a tyrannosaur from attacking. And if it was still insistent, maybe those front legs could be used for boxing? Or perhaps the hadrosaur's means of defence was to slam its body into the predator? The risk of broken ribs or falling over and getting trampled would probably dissuade a tyrannosaur. Of course, if tyrannosaurs hunted in packs, that could get quite complicated.

I had an idea that maybe hadrosaurs nested together with ceratopsians as a means of defence, but that seems unlikely.

----Original Message Follows----
From: Andrew Simpson <deathspresso@yahoo.com>
Reply-To: deathspresso@yahoo.com
To: dracontes@gmail.com, dinosaur@usc.edu
Subject: Re: How Did Hadrosaurs Defend Their Young?
Date: Tue, 07 Feb 2006 11:01:31 -0800 (PST)

I agree that many a herbivore will fight back or not
run when they know they hold the upper hand. I would
think they might stand their ground but what I can't
figure out is how they would defend themselves. They
have no weopons or armor and seemingly are not fast.
Anybody have any thoughts on the subject of hadrosaur

Andrew Simpson