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Re: How Did Hadrosaurs Survive? (Was: Hadrosaur "mummy" questions)



On Fri, 25 Oct 2002, Mike Taylor wrote:
> > Date: Wed, 23 Oct 2002 11:32:48 +1000
> > From: Dann Pigdon <dannj@alphalink.com.au>
> > 
> > Since hadro's seem to lack any obvious means of defence (no horns or
> > spikes), perhaps they were literally thick-skinned. An obvious
> > advantage when being verbally abused by a ceratopian.  :)
> 
> Since it's been a bit quiet on here for the last few days, I may as
> post my dumb question.  It's often bothered me that there seems to be
> an ecological imbalance in those late-Cretaceous days: how on earth
> did the hadrosaurs not _all_ get eaten by tyrannosaurs?  So far as we
> understand the morphology and its implications, the predators were
> faster, stronger and probably smarter than their prey: so what _could_
> a poor hadrosaur do once a tyrannosaur had decided to eat it?

Substitute "gazelle" for hadrosaur and "lion" for tyrannosaur.

Predator/prey ratio. Lots of hadrosaurs, fewer predators. Plus lots of
other prey animal species.

> [...]