Re: Articles in Integrative Zoology

[Jura <pristichampsus@yahoo.com>]

If anyone can grab these (I had no luck either), I'd
like a copy of the first one too.

Jason

--- "Thomas R. Holtz, Jr." <tholtz@geol.umd.edu>
wrote:

> A journal to which I don't have access... (Pdfs
> appreciated if someone has them). In any case, here
> are the articles:
> 
> Integrative Zoology
> Volume 1 Page 4  - March 2006
> doi:10.1111/j.1749-4877.2006.00004.x
> Volume 1 Issue 1
> Feathered dinosaurs from China and the evolution of
> major avian characters
> Xing XU1
>  Abstract
> 
> Recent discoveries of feathered dinosaurs from Early
> Cretaceous deposits in Liaoning, China, have not
> only lent strongest support
> for the dinosaurian hypothesis of bird origins, but
> have also provided much-needed information about the
> origins of feathers and
> avian flight. Preliminary analysis of character
> evolution suggests that the major avian osteological
> characters were acquired during
> the early evolution of maniraptoran dinosaurs. The
> available evidence also suggests that the first
> feathers with a filamentous
> morphology probably evolved in basal coelurosaurs
> and pennaceous feathers (including those with
> aerodynamic features) were developed
> in non-avian maniraptorans, indicating that feathers
> evolved before the origin of birds and their flight.
> An evolutionary model is
> proposed here to describe the major stages of
> feather evolution, a process characterized by a
> combination of both transformational
> and innovative modifications. This model is
> different from some recent developmental models,
> which suggest that feathers are
> evolutionary novelties without a homologous
> relationship to reptilian scales. Although non-avian
> theropods are traditionally
> regarded as distinctly cursorial animals, recent
> discoveries suggest that the closest relatives of
> birds might be arboreal
> theropods. Many bird features, such as the furcula
> and pennaceous feathers, evolved in a terrestrial
> context, whereas others, such
> as some pedal modifications, may have evolved in an
> arboreal context. Consequently, arboreality may have
> also contributed to the
> origin of avian flight
> 
> Integrative Zoology
> Volume 1 Page 15  - March 2006
> doi:10.1111/j.1749-4877.2006.00006.x
> Volume 1 Issue 1
> 
> 
> The Jehol Biota (Lower Cretaceous, China): new
> discoveries and future prospects
> , Paul M. BARRETT1 and Jason M. HILTON2
>  Abstract
> 
> Continuing work on the paleontology and
> sedimentology of the Jehol Group (Lower Cretaceous,
> China) is yielding numerous new insights
> into the evolution of many Mesozoic plant and animal
> clades. Nevertheless, many questions remain
> unanswered regarding Jehol
> paleoenvironments, paleobiology and
> paleobiogeography. All of this information will be
> crucial in providing a detailed
> reconstruction of this extinct ecosystem.
> 
> 
>               Thomas R. Holtz, Jr.
>       Senior Lecturer, Vertebrate Paleontology
> Department of Geology         Director, Earth, Life & Time
> Program
> University of Maryland                College Park Scholars
>       Mailing Address:
>               Building 237, Room 1117
>               College Park, MD  20742
> 
> http://www.geol.umd.edu/~tholtz/
> http://www.geol.umd.edu/~jmerck/eltsite
> Phone:        301-405-4084    Email:  tholtz@geol.umd.edu
> Fax (Geol):  301-314-9661     Fax (CPS-ELT):
> 301-405-0796
> 
> 


"I am impressed by the fact that we know less about many modern [reptile] types 
than we do of many fossil groups." - Alfred S. Romer

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