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Re: Geographic Distribution of Maniraptora
Sorry... message truncated.... I was working with rich text....
Here is that I wanted to say...
Maybe you can use Scotese's maps (www.scotese.com), as a source for drawing
your own schematic maps using some vector drawing software (Open Office Draw,
Corel Draw, Illustrator, etc.). Also, you can make combined works, using the
image (maximized to the final size) and the vectorial drawing for the edges
(you can smooth the image for hiding a little the pixels). Finally, you can
search Scotese's site or Contact him for more info (he SURE has the hi-res maps)
About the distribution of Maniraptorans, you have a small discussions in:
Kim et al. (2005). The first non avian maniraptoran... Cretaceous Research 26:
299-306 Case, J.A.,
Martin, J.E. and Reguero, M. (2007) A dromaeosaur from the Maastrichtian of
James Ross Island and the Late Cretaceous Antarctic dinosaur fauna. U.S.
Geological Survey and The National Academies; USGS OF-2007-1047, Short Research
Maybe you can also compare the distribution of Maniraptorans (Laurasian vs
Gondwanic Unenlagiinae, as Unenlagia comahuensis and U.paynemilli,
Neuquenraptor argentinus (U.paynemilli?), Buitreraptor, Unquillosaurus (?),
Santanaraptor (some place it in Maniraptoriforms, altough others consider it an
Abelisauroid Noasaurid, or even a Tyrannosauroid), Rahonavis, and the Brazilian
Maniraptora) , considered by many authors as more primitive) taking into
account the vicariance proposal, and compare with the distribution of
Alvarezsaurid taxa (which also reveals that the South american taxa
(Patagonykus, Alvarezsaurus, Achillesaurus, and a yet unpublished taxa) are
more primitive than the Laurasian ones.
Hope this is useful for you!
Lic. Ezequiel I. Vera
Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"
División Paleobotánica. Lab. 61.
Av. Angel Gallardo 470. C1405DJR.
E-mail: email@example.com / firstname.lastname@example.org
http://paleovera.googlepages.com (home page)
ensaje original ----
De: Lonnie Allen Matson <email@example.com>
Enviado: viernes 15 de febrero de 2008, 4:11:36
Asunto: Geographic Distribution of Maniraptora
This is my very first post, and before I sent it, I searched the
archives extensively to make certain that I was not duplicating a
previous thread or topic. If my search failed, please forgive me.
I have just recently been approved as an intern in the Paleontology
Lab at the Dallas Museum of Natural History (now the Nature and
Science Museum). As well, Dr. David Burnham has agreed to mentor me,
and assist in developing a project, which I hope will become my
thesis, for Graduate School.
I am still in the early research stages as of yet, but what I
need assistance on is the following. Are there any studies available
on the geographic distribution of all Maniraptorans, not just the
feathered specimens? I just recently read about Buitreraptor, and the
article mentioned the possibility of two very distinct groups, one
from Gondwanaland, the other from Laurasia. When I see all these
proposed phylogenetic tree's I often wonder where the specimens used
for the study are from. I start to wonder how much of these close
relationships are attributable to convergence between the two different
I have searched long and hard, and as of yet, had no luck finding
such a study. Again, I may have overlooked it.
As well, are there any good maps of the Triassic, Jurassic and
Cretaceous one could purchase? I want to pin these "raptors" on the
map, to get a visual sense of what was going on and how they were
distributed. I would need them large, like a map so to speak. It
would be used for a presentation.
I truly enjoy reading the site,
chives, and I hope once I get more experience in the field, that I
can contribute more knowledgeably to other discussions. Any assistance
would be appreciated, and I thank you beforehand.
Lonnie Allen Matson
University of North Texas
"Trilobites and dinosaurs, who were each around for more than a
hundred million years, might be amused at a species here only a
thousandth as long deciding to appoint itself the guardian of life
on Earth. That species is itself the danger".
---- Carl Sagan
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