Re: Spinosaurus questions and the presence of air-sacs in Dinosauria (quite long)

[Graydon <oak@uniserve.com>]

On Fri, May 30, 2003 at 09:38:47PM +1000, Colin McHenry scripsit:
> Alternatively, it may have allowed to hump/sailed animals to range
> into areas not accessible to the non-hump/sailed animals at certain
> times of the year.  Or something else.  I think that this is what
> Mickey is getting at below...

Why leave out muscle attachment?

It's -- from its teeth -- a fish eater, and from its size and the size
of the fish, one that would do a lot of headfirst swallowing whole,
which means grabbing prey down near its feet and heaving them up to a
good swallowing angle.  That is going to encourage very strong neck
muscles, and the obvious way to get attachment sites for them is to
expand the dorsal spines of the vertebrae.

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