Re: Placement of Segnosauria (was Re: Details on Nanshiungosaurus bohlini)

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

Mike Keesey wrote:

<I mention "indeterminate material (neck vertebra) --
late Late Jurassic -- U.S.A.". Looking back in the DML
archives, I find this quote from Timothy Williams:
"There's also possible oviraptorosaur[s] from the
mid-Cretaceous of Australia and Brazil, and a caudal
vertebra from the Morrison." I must have made an error
when I wrote "neck vertebra" -- will correct shortly.>

  No, the neck vertebra is correct; material was
described by Makovicky, 1995, for his thesis on
cervical pneumatization (don't have this thesis,
though). Closest material corresponds to
therizinosauroids and oviraptorosauroids.

  Cervical vertebra from Argentina, Frankfurt and
Chiappe, 1999, has similar properties.

  Sacrum from Brazil, Martill and Frey, 1996, has
anterior sacral pleurocoels, but this is undiagnostic.

  Caudal and "surangular" from Australia, Currie,
Rich, and Vickers-Rich, 1996, as similarities to
*Chirostenotes* for the first, and between
dromaeosaurids and oviraptorosaurs for the second,
suggesting these are at least maniraptoran.

  I've done a more extensive write-up on the list for
the "Around the World Oviraptorosaurs" material.
Therizinosauroid manal claws from Morocco (Russell,
1995, _Comptes Rendus_) are rather quaint.... Evidence
is good from pangaean ovi+segnos....

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

  Dinosaurs are horrible, terrible creatures! Even the
  fluffy ones, the snuggle-up-at-night-with ones. You think
  they're fun and sweet, but watch out for that stray tail
  spike! Down, gaston, down, boy! No, not on top of Momma!

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