Re: JP3 Thoughts (frilled Dilophosaurus revisited)

[Christopher Srnka <theclaw10@home.com>]

Before everyone starts thinking I'm completely insane: no, I don't necessarily
think that _Dilophosaurus_ had a neck frill. However, I honestly did not
know that enough fossil evidence existed to completely rule it out in known
species of _Dilophosaurus_. If all anyone could present were reasons related
to the animal's  size or place in the food chain, that to me isn't
good enough to completely rule out the neck frill-type structures. But
if such a structure would show evidence of muscle attachment scars on the
bones supporting the frill, and none exist...well, that still makes
me wonder; how do we know that _Dilophosaurus_ specimens have preserved
all of the muscle attachment scars without any being eroded into obscurity?
I would imagine that the muscle attachment scars for a neck frill would
not be very large.

Getting the answers to these types of questions is one of the main reasons I subscribe to this list; I'm not a scientist (which is painfully obvious to most of you), and I haven't gone on any digs yet (hopefully sometime soon, though).