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Re: So here it is...

Keep in mind that the sense of "smell" is more or less just another form of chemical detection (and closely related to the sense of taste).
Don't sea turtles and salmon find their way "home" by a sort of underwater equivalent of "smell"? When a snake tests the air with its tongue, is it smelling or tasting?
Seems like it is all part of one long continuum, so I wouldn't underestimate the ability of dinosaurs (or any tetrapod) to detect "smells" or "chemicals" in their environment, in or out of the water.
From: "David Marjanovic" <David.Marjanovic@gmx.at>
Reply-To: David.Marjanovic@gmx.at
To: "The Dinosaur Mailing List" <dinosaur@usc.edu>
Subject: Re: So here it is...
Date: Fri, 19 Jan 2001 17:55:09 +0100

> >As *A.* lived at the seashore, where there aren't too many things to
> >I'll suspect convergence.<
> Actually, I'd say that there is more stuff to smell at the seashore than
> say, a plain. There is the saltwater smell that the animal would need to
> filter out, and then, it would need to seperate seaweed from crabs from
> washed-up ichthyosaurs from all kinds of animal dung from predators from
> prey from animals that aren't a threat from other archies. Just my take,
> I think that the animal would have to deal with all kinds of shore and sea
> smells, plus the usual inland smells.

Hm. This argument would work wonderfully for most mammals, but for birds and
suchlike... Birds, and probably dinosaurs in general, rely more heavily on
eyesight, e. g. they would simply ignore dung. (Of course, there are the
enormous olfactory lobes of *T. rex* and the king vulture, but these are
special adaptations.)
Under water there is nothing to smell for nearly all tetrapods (has
been suggested otherwise for "pliosaurs", but nobody can argue Archie was
that specialized for an aquatic predator).

> Anyone know if there is a difference
> in olfactory lobes in a pelican versus a secretary bird?

No, would be quite interesting.

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