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RE: Dalianraptor - a composite?



I would like to note that, so far, this is an assertion from O'Connor, and 
amounts to a "pers. comm." on the part of Naish, even though no cite is given 
on the blog. In other words, it's not even data.

Cheers,

  Jaime A. Headden
  The Bite Stuff (site v2)
  http://qilong.wordpress.com/

"Innocent, unbiased observation is a myth." --- P.B. Medawar (1969)


"Ever since man first left his cave and met a stranger with a
different language and a new way of looking at things, the human race
has had a dream: to kill him, so we don't have to learn his language or
his new way of looking at things." --- Zapp Brannigan (Beast With a Billion 
Backs)


----------------------------------------
> Date: Sat, 11 Aug 2012 17:48:46 +1000
> From: tijawi@gmail.com
> To: dinosaur@usc.edu
> Subject: Dalianraptor - a composite?
>
> This has been bubbling away for a while now, but the issue of the
> composite nature of the basal avialan _Dalianraptor_ surfaced recently
> at Darren Naish's _Tetrapod Zoology_ blog:
>
> http://blogs.scientificamerican.com/tetrapod-zoology/2012/08/09/bird-chapter-in-complete-dinosaur-ii/
>
> With a follow-up by Matthew Martyniuk at DinoGoss:
>
> http://dinogoss.blogspot.com.au/2012/08/dalianraptor-cuhe-forgery.html
>
> Although not yet official, it appears that the type specimen of
> _Dalianraptor cuhe_ is a deliberate chimera: a probable _Jeholornis_
> specimen with the wings replaced with (much) shorter forelimbs from a
> non-avian theropod. Fiendishly clever. The _Jeholornis palmapenis_
> description by O'Connor et al. mentioned that _Dalianraptor_ had been
> "tampered" with, but no details were provided. Darren is more
> explicit: "Meanwhile, long-tailed, short-armed _Dalianraptor_ - mooted
> in my text as a possibly flightless relative of Jeholornis - turns out
> to be a composite, its short arms being from a non-avialan
> maniraptoran".
>
>
> The suggestion that short-armed _Dalianraptor_ was a secondarily
> flightless jeholornithid was somewhat uncertain from the beginning -
> because it's not clear that long-armed _Jeholornis_ itself was capable
> of powered flight. Now there are short odds that _Dalianraptor_ (sans
> undersized forelimbs) is merely a "normal" _Jeholornis_.
>
>
>
>
>
> Cheers
>
> Tim