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Re: JVP 26(4)

On 12/19/06, Justin Tweet <thescelosaurus@juno.com> wrote:
Hi, everyone;
<snipped the boring saurischians out!> 

Prieto-Marquez, Alberto; Gaete, Rodrigo; Rivas, Gonzalo; Galobart,
Angel (accented A); and Boada, Marc. Hadrosaurid dinosaurs from the
Late Cretaceous of Spain: _Pararhabdodon isonensis_ revisited and
_Koutalisaurus kohlerorum_, gen et sp. nov. JVP 929-943.

_Pararhabdodon is not a lambeosaurine, but close to the base of
Hadrosauridae (here = Lambeosaurinae + Hadrosaurinae); in fact, it
comes out as the sister taxon, closer to Hadrosauridae than
_Bactrosaurus_, _Gilmoreosauru_, _Telmatosaurus_, and _Tanius_.
(Interestingly, _Hypacrosaurus_ is paraphyletic_.)


This isn't the first time that Pararhabdodon has been rejected as a
lambeosaurine. Nor is the first time that Hypacrosaurus was found to
be paraphyletic. It'll be interesting to see the analysis though,
since I'll be curious as to if certain taxa continue to be excluded as
in past works by the main author.

A dentary, IPS SRA
27, is referred to new genus _Koutalisaurus kohlerorum_, "Terry and
Mary Kohler's spoon lizard," in reference to the shape the complete jaw
would have had.  It's a very elongate dentary with a long edentulous
portion that is steeply curved down and in (something like
_Protohadros_).  This taxon, from the Tremp Formation near Abella de la
Conca, Lleida, Spain, is found to be a hadrosaurid of uncertain
affinities (it causes Lambeosaurinae to explode).

Guess this means this is the paper I've been waiting on for awhile. :)


Maidment, Susannah C.R.; Guangbiao Wei; and Norman, David B.
Re-description of the postcranial skeleton of the Middle Jurassic
stegosaur _Huayangosaurus taibaii_. JVP 944-956.

_Huayangosaurus_ is more plesiomorphic than previously suspected
(retains ossified tendons, for example).  Additionally, at least some
of the referred remains (CV 721, an ilio-sacral block) pertain to a
more derived stegosaurid, reminiscent of the Late Jurassic Chinese
stegosaurids, so contemporaneous remains should not be referred
willy-nilly to _Huayangosaurus_ (unassociated parascapular spines in
particular).  _Scelidosaurus_ is found to be the sister group to
Euryopoda, not an ankylosaurian\ankylosauromorph.

Fantastic to see some more material out on stegosaurs, are the
positions advocated by the authors the result of a cladistic analysis?


Notes:
Vickaryous, Matthew K. New information on the cranial anatomy of
_Edmontonia rugosidens_ Gilmore, a Late Cretaceous nodosaurid dinosaur
from Dinosaur Provincial Park. JVP 1011-1013.

CT scanning of three skulls clarifies information on the osseous
secondary palate and shows that paranasal sinus cavities are present.
Deep vomers, as in _Panoplosaurus_, partition the oral cavity, and have
unknown implications for oral processing.

This paper seems rather short from the number of pages, but hopefully
it contains some useful new information!


Campione, Nicolas E.; and Holmes, Robert. The anatomy and homologies of
the ceratopsid syncervical. JVP 1014-1017.

It's the atlas, axis, and third cervical, not atlas, axis, third
cervical, and fourth cervical.


Farke, Andrew A.; and Williamson, Thomas E. A ceratopsid dinosaur
parietal from New Mexico and its implications for ceratopid
biogeography and systematics. JVP 1018-1020.

It's a chasmosaurine parietal (NMMNH P-44477) from the Naashoibito
Member of the Kirtland Formation, referred to Chasmosaurine indet.  It
has an epoccipital on the midline, otherwise only known in
_Triceratops_, but the parietal is also thin, and nobody has ever
accused _Triceratops_ parietals of being thin.  The Alamo Wash fauna,
to which it belongs, is distinct from other Kirtland\Fruitland members
in its chasmosaurine.  The parietal also supports latitudinal variation
in ceratopsid faunas as the end of the Cretaceous.

-Justin



Can't wait til I can read these papers for myself!
Even though I know most of the list is probably going to be more a
flutter over the theropod works ;[

Happy holidays
Nick Gardner