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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.


  Jaime A. Headden
  The Bite Stuff (site v2)

"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 

> 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