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Re: Response II



> On Sun, Jun 03, 2001 at 04:50:40PM +0200, David Marjanovic scripsit:
> > > Moreover, *T-rex* had extremely acute senses
> >
> > Hard to tell, but I don't think its senses were more acute than
everything
> > known today. I'd be very surprised if it had had more acute eyesight
than
> > the average eagle, for instance.
>
> Larger eyes = better eyesight, no?
>
> Tyrannosaurs had big eyes in absolute terms, larger than will fit in an
> eagle head; it wouldn't surprise me if they had extremely accute vision.

Phew. No idea. However, I haven't heard much spectacular of whale
eyesight... and a lot of features that don't fossilize (density of retinal
cells...) influence vision.

> Can't think of any blessed way to test this, or what the ability to see
> that accutely would do for a huge carnivore.

Neither can I.

> Given the size of the nerves to the olfactory bulbs in the skull that
> got CAT scanned, I'd say it's safe to say 'good sense of smell', too.

This seems pretty safe. However, might the diameter of these nerves be
exaggerated by air sinuses?