Nanotyrannus

[christopher robert noto <crnoto@midway.uchicago.edu>]

Hi, 
I was wondering if anyone had any info or insights about the theory that
Nanotyrannus is, in actuality, a juveniule tyrannosaur.  The literature
that I have read says this is not true, and that this is an entire taxon
all it's own.  But I've heard recently that others (i'm not exactly sure
who) have said that the Nanotyrannus skeleton has the proportions of a
juvenile when scaled to an adult.  But how can this be so?  I thought that
many dinosaurs did not grow proportionally but varied in rate at different
times during their life, like humans.  Can such a comparison be made 
between adult s and juveniles unless the two are found in close proximity
to each  other?  In other words, isn't it like comparing apples and
oranges?  Also there was mention of incomplete suturing between the skull
bones, but according to  Greg Paul (Pred. Dinos. of the World),
there is evidence of advanced suturing, making this a fairly grown
individual.  There seems to be conflicting evidence on the issue (but what
else is new?).  Any information or opinions would be appreciated.

Thanks,
Chris Noto

University of Chicago