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Cryolophosaurus & the "Lufeng theropod"

First of all, I hope everyone requesting that I
forward the _Psittacosaurus_ integument photos from HP
Michael Schmidt have recieved them. If not, please
e-mail me back.  
     Now, I'll get down to businesss. I believe that
_Cryolophosaurus_, "_Dilophosaurus_" sinensis (which I
will simply call the "Lufeng Theropod") AND
_Dilophosaurus_ may form a clade. I base this
assumption on several rather unique features of the
skull which I will elaborate on. First, though, let me
present my little phylogeny;

____________________Lufeng theropod

I'm not quite sure where this group may be situated, 
but my best guess is somewhere in the basal tetanurae,
as Rauhut (2000) apparently believes. The Lufeng
theropod has a somewhat generalized skull design,
suggesting it is closer to more advanced animals, like
_Monolophosaurus_. _Cryolophosaurus_ and the Lufeng
theropod share: 1) A convex dorsal margin of the
antorbital fenestra. 2) A hypertrophied base of the
preorbital bar. 3) A reduced, dorsally-placed anterior
flange of the lacrimal. 4) Oval obturator foramen in
pubis.  _Cryolophosaurus_ and _Dilophosaurus_ share 1)
An elongate wing-shaped jugal process of the
postorbital. 2) Anteriorly-shifted quadratojugal
process of the squamosal. 3) Enhanced striation of the
nasolacrimal crest. *4) Posterior (or lateral) "spur"
on lacrimal.
     The morphology of the lateral temporal fenestra
of _Dilophosaurus_ almost looks like a transitional
phase between the typical theropod condition and the
distinctive division of the fenestra in
_Cryolophosaurus_. C. ellioti apparently shifted its
crests posteromedially, forming the fan-shaped
arrangement. While some reconstructions of
_Dilophosaurus_ show a straight dorsal margin of the
AOFE, viewing the type material suggests an albeit
reduced but still present dorsal bowing, and a
slightly thicker base of the preorbital bar. It looks
as though D. wetherilli simply lowered it's antorbital
fossa. As Hammer & Hickerson (1994) state, the
postcrania of C. ellioti is quite primitive, and
ceratosaurian. So, in conclusion to this very brief
report, I would like to say that all 3 animals have
many differences, but share key anatomical features
which suggest, at least to me, that a superfamily
should be erected for this clade. Dilophosauroidea,

Waylon Rowley

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