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October 25, 2012
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A new Jehol find? Nope! It's Ornithomimus itself! Two new specimens (an adult and a juvenile) have been found with feather traces, and a long-known adult specimen has been discovered to have what may be attachment points for large feathers on the arms. This means that pennibrachiae go down to the base of maniraptoriforms! The juvenile, however, doesn't preserve pennibrachiae, so it might mean that in these basal maniraptoriforms only the adults had pennibrachiae, and that pennibrachiae originally evolved for display. In addition, this also opens up the possibility of finding feathered dinosaur specimens in coarser-grained sediment than usually expected, as long as fossil hunters keep a sharp eye out for those delicate feather traces.
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:iconjd-man:
JD-man Featured By Owner Oct 29, 2012
I was originally expecting Pelecanimimus, but this is even better, both b/c of the conditions it was preserved in & b/c of the evidence for wing feathers. What I'm wondering is if ornithomimosaurs brooded their nests like true maniraptors?
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:iconalbertonykus:
Albertonykus Featured By Owner Oct 29, 2012
That's certainly a possibility!
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:iconjd-man:
JD-man Featured By Owner Oct 29, 2012
Someone should draw a brooding ornithomimosaur (preferably someone w/talent). I nominate you.
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:iconalbertonykus:
Albertonykus Featured By Owner Oct 29, 2012
Aw, I'm honored. I'll see if I can get around to that, but don't be surprised if someone beats me to it. :D
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:iconspongebobfossilpants:
At this rate, the 80s meme of feathered Coelophysis rhodesiensis will prove correct!
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:iconalbertonykus:
Albertonykus Featured By Owner Oct 27, 2012
:D
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:iconrichardelder:
RichardElder Featured By Owner Oct 26, 2012  Hobbyist
This was found in Alberta and has been at the Royal Tyrrell Museum for a long time. I've known about this since August 2010!
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:iconalbertonykus:
Albertonykus Featured By Owner Oct 26, 2012
Yes, one of the examined specimens has been on display for years, and the two newer ones were discovered in 2008-2009. However, the paper describing all this hadn't been published until yesterday, so until then most of us were not in the know. ;)
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:iconrichardelder:
RichardElder Featured By Owner Oct 26, 2012  Hobbyist
I know I would have wanted to say something but that would be like spoilers :P
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:iconalbertonykus:
Albertonykus Featured By Owner Oct 26, 2012
Yep, better not to break embargo (and more satisfying to spring a surprise on everyone else!).
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