Re: Dilophosaurus? sinensis skull photo

["Jaime A. Headden" <qilongia@yahoo.com>]

Nick Pharris wrote:

<What this thing bears an uncanny resemblance to, in
my mind, is _Monolophosaurus jiangi_ (see _Canadian
Journal of Earth Sciences_ , vol. 30 [1993], p. 2029).
The way the crest begins just in front of the eyes,
for one thing, is more like _Mono_ than _Dilo_. The
lacrimal looks VERY like that of _Cryolophosaurus_,
and the quadrate/quadratojugal/jugal area looks much
like _Sinraptor_. I wouldn't be surprised if _"D".
sinensis_ turned out to be a primitive tetanuran or
basal carnosaur.>

  I agree with Nick. Another few points, is that the
antorbital fenestra is rectangular and continues, at
least anteriorly, above the maxilla and nasal, on the
lateral surface of the crest, as in *Mono.* and also,
perhaps, in *Proceratosaurus* Woodward. Unlike
coelophysoids, the antorbital tooth row, as Smith
pointed out yesterday, does not continue ventral to
the orbit; there's a very extensive lachrymal flange
that appears to exclude the jugal from the antorbital
fenestra, and the lachrymal itself resembles that of
*Mono.* and *Cryo.* more than anything else.

  What fun, paleontology.


=====
Jaime "James" A. Headden

"Come the path that leads us to our fortune."

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