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Re: Postosuchus urine (was RE: well-lit dimosaurs)



    Some people say the dinosaurs could have had behaviours like nowadays
animals. Such like _Liopleurodon_ swam probably like the nowaday sea-turtle,
maybe any archosaurs or even some dinosaurs could have left signs or marks
of their territory, but that can't be proved, since urine and feromones
(like other organic molecules that could have been used to do so) are not
fossilized. If the comparison to nowadays reptiles is the most probable,
remember that some crocodiles release feromones from a gland in their head,
or if you want to look at birds, some birds use the feromones to mate. And,
still about birds, some of them have the best smelling sense among the
animals, like the vultures. You can say if I´m wrong.
    Regards,
            Marcel Bertolucci
        ( mbertol@zaz.com.br )
        http://www.geocities.com/CapeCanaveral/Campus/7472/
        "Dinosaurs are the most amazing, intriguing and interesting mystery
of nature I´ve ever seen."

----- Original Message -----
From: "Thomas R. Holtz, Jr." <tholtz@geol.umd.edu>
To: "Ray Stanford" <dinotracker@earthlink.net>; "Dinosaur Mailing List"
<dinosaur@usc.edu>
Sent: Friday, March 02, 2001 7:16 PM
Subject: Postosuchus urine (was RE: well-lit dimosaurs)


> > From: Ray Stanford [mailto:dinotracker@earthlink.net]
> >
> >     Thomas R. Holtz, Jr. responding to my latest post (Quoted in part,
> > only.):
> >
> >  "Sure it [the T. rex statement in BBC's on-line article] stinks,
> > but only a
> > little stink; not the horrendous stench you might
> > find in some other alleged "science" reports.
> >
> >     To that, I'll say, "Amen!  Preach on, brother!"
>
> (I think I sounded more like my old self up there... :-).
>
> >     Come to think of it, Tom, do you (or anyone else on list)
> > have some idea
> > of how the heck the BBC producers came up with a dinosaur producing
mammal
> > type urine and, furthermore, squirting it backward like some
> > territory-marking tiger (or rhinoceros, for that matter)?  It is hard to
> > imagine how that got into the production.  (Or, has this been covered on
> > list, much earlier?)
>
> I think we did cover it earlier, and I'm sure that Darren Naish discusses
it
> in his book.  However, in brief, it got in their because the consultants
> were consulted before they decided the scene, and then afterwards after
they
> had spent their money on it.  Urgh...
>
> And, just to clear things up, they don't show any dinosaurs whizzing like
a
> tiger: its the pseudosuchian _Postosuchus_ who does that.  The tiger
> reference, incidentally, is right on the money.  Many scenes in WWD were
> inspired by classic nature special footage (the _Liopleurodon_ eating the
> _Eustreptospondylus_ after orca-sea lion scenes; the hatching _Diplodocus_
> after hatching sea turtles; etc.).  Great concept, but not always accurate
> in application.
>
> >     May everyone have a fine weekend.
>
> I echo those sentiments, and am outta here...  However, should anybody be
> wandering in the exhibit areas of the AMNH this Sunday, feel free to say
> "Hi".  (I'll have a particle cloud of undergrads around me).
>
> Thomas R. Holtz, Jr.
> Vertebrate Paleontologist
> Department of Geology Director, Earth, Life & Time Program
> University of Maryland College Park Scholars
> College Park, MD  20742
> http://www.geol.umd.edu/~tholtz/tholtz.htm
> http://www.geol.umd.edu/~jmerck/eltsite
> Phone: 301-405-4084 Email: tholtz@geol.umd.edu
> Fax (Geol):  301-314-9661 Fax (CPS-ELT): 301-405-0796
>