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Ingenia and Citipati, and a Note on the Nakasato Museum Website

First, the note:

  The skeleton mounted of "Ingenia" at the dino-nakasato website is not 
*Ingenia*. It is vaguely
similar, and it is easy to confuse, but for a problem of the id of the sternum, 
the skull is that
of *Conchoraptor*, and is in fact the type specimen (GI 100/20) and the lower 
jaw (GI 100/21) is
reconstructed, and does not have such a deep lower margin. The skeleton is 
conchoraptorine, and
pertains to *Conchroraptor*, though I am uncertain of the specimen number. This 
material has
previously been referred to *Ingenia*, and this may be the source of the 
confusion on the website.
The sternum is an isolated specimen, GI 100/35 I beleive, which was referred to 
*Ingenia* by
Barsbold, 1983, based on differences from the sternum of the "super" 
oviraptorid, GI 100/42, now
suggested as belonging to *Citipati* as a new species and _not_ to *Oviraptor 
(Clark et al., 2001).

  Okay, now for the diagnoses:

  *Ingenia yanshini* Barsbold, 1981 (Barsbold, 1983 in partim sensu Barsbold et 
al., 1990)

  The type includes a partial braincase of a "regular" oviraptorid skull 
(Headden, in prep) and a
partial postcranial skeleton. The original diagnosis is based on the manus, and 
in this there are
several distinctive and autapomorphic features unknown in _any_ dinosaur: the 
first manal digit is
longer than the second manal digit, and extends further distally than the 
second manal digit
(notice that length of a digit is based on all phalangeal lengths computed); 
first manal digit
larger relative to width than other manal digits; successively distal phalanges 
of second and
third digits smaller than proximal elements until unguals, which are larger 
than distal
non-ungualate phalanges. The remainder of the postcranial skeleton also appears 
to contain
autapomorphies, including a relatively proportionately shorter forelimb than 
hindlimb, much less
than 2/3 the hindlimb length; an ilium higher above the acetabulum than at any 
iliac ala; pubis
without any ventral curvature of the shaft, even just above the "boot;" broad 
angle divergence of
the proximal and distal ischiadic halves, where the angle of the short arms of 
the triangle is set
at the obturator process.

  *Citipati osmolskae* Clark, Norell, & Barsbold, 2001

  Only the type skull is adequately prepared to allow for a diagnosis to be 
rendered: the nsal
crest is short and the proximal face of the snout has a broad angle of 
divergence from the
horizontal long axis of the jugal; the external nares is broadly ovate, not 
slited at the rear;
the occiput is inclined rostrally at the dorsal extent, resulting in a 
relatively longer basal
length of the skull compared to the dorsal length, a sharp angle of the dorsal 
and rostral rami of
the quadratojugal, a nearly strait ventral margin between the rostral and 
vental rami of the
squamosal, and a dorsal ramus of the jugal at a perpendicular to the horizontal 
long axis, not
inclined caudally. The postcrania appears to have some autapomorphies as well, 
but this will need
to be thouroughly compared once a few other specimens are prepared and 
described. Thus, they are
not included.

  Hope this helps,

Jaime A. Headden

  Little steps are often the hardest to take.  We are too used to making leaps 
in the face of adversity, that a simple skip is so hard to do.  We should all 
learn to walk soft, walk small, see the world around us rather than zoom by it.

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