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Utahraptor sketch by Tomozaurus Utahraptor sketch by Tomozaurus
A very quick sketch of Utahraptor ostrummaysorum for #UtahraptorWeek: an initiative started by the Earth Archives blog to raise support for The Utahraptor Project, a current scientific endeavour to excavate a large sandstone block containing numerous Utahraptor fossils including juveniles and adults. The Utahraptor Project can be found here: utahraptors.utahpaleo.org/

Figured I could throw together a quick sketch for a cause. Overall proportions are based primarily on the phylopic silhouette by ScottHartman and is likely to be rendered inaccurate once the data from new specimens comes in.
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:icondovahkiinhu3br:
DovahkiinHU3BR Featured By Owner May 28, 2018
Just a question: how did you come to the conclusion that Utahraptor had ratite like feathers on the extremities while having wings like moderns raptors instead of actual ratites? Is there a possibility of Utahraptor having more ratite like wings?
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:icontomozaurus:
Tomozaurus Featured By Owner May 28, 2018  Student General Artist
Okay so it works like this:

If an animal, like an ostrich, is descended from a flying ancestor, then its feathers were being used predominantly for flight and lose their utility when the animal becomes flightless.
But if the animal's lineage was flightless to begin with, like dromaeosaurids, then the "wing" feathers were being used for something else (likely prey restraint) and do not lose this utility just because the animal gets larger.
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:icondovahkiinhu3br:
DovahkiinHU3BR Featured By Owner May 29, 2018
I see, but I have one more question: if Dromaeosaurids were always flightless, isn't there a chance that the wings of at least some dromaeosaurids were more ratite like?

I mean: Every time someone reconstructs a dromaeosaurid the "design" of the arm/wing feathers are 999,9% of the time heavily based on the "design" of the wings of modern raptors, while the wings of ratites are more "unnorganized" since they do not fly.

In short my question now is: could the wings of Utahraptor, for example, have looked more like the wings of an ostrich than those of an eagle?
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:icontomozaurus:
Tomozaurus Featured By Owner May 29, 2018  Student General Artist
Not impossible but I wouldn't expect it to be the most likely option as ostrich-like wings would not have been very useful for raptor prey restraint. I think it is likely they would have lost some of their structure (ie. hooklets and/or barbules) but I would expect they would still be stiffened and form an aerodynamic plane to make RPR work. A Takahe is a good example: cdn2.arkive.org/media/D4/D409A…
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:icondovahkiinhu3br:
DovahkiinHU3BR Featured By Owner May 30, 2018
Thanks for the info
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:icondennonyx:
Dennonyx Featured By Owner Aug 24, 2017   Traditional Artist
In that case I apologize, probably an optical effect due to the different plumage yield
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:iconxstreamchaosofficial:
XStreamChaosOfficial Featured By Owner Apr 4, 2017  Hobbyist Traditional Artist
awesome sketch
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:iconvolgadraco:
Volgadraco Featured By Owner Apr 1, 2017  Hobbyist General Artist
Cool as always!
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:iconlwpaleoart:
LWPaleoArt Featured By Owner Mar 31, 2017  Professional Digital Artist
Well, Scott released his skeletal drawing not long ago. This still matches up pretty well, but the tail is amazingly, surprisingly short. (At least in my opinion!)

This looks really great, and I can't wait to see even more new art from you. :) I love how you draw the skin around the faces of your dinosaurs, it looks really avian and realistic to me.
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:iconcommander-salamander:
commander-salamander Featured By Owner Mar 29, 2017  Hobbyist General Artist
Nice jowls!
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:icontomozaurus:
Tomozaurus Featured By Owner Mar 29, 2017  Student General Artist
Ya gotta have nice jowls!
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:iconelkrampus:
ELKRAMPUS Featured By Owner Mar 28, 2017  Hobbyist Traditional Artist
owo 
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:icondontknowwhattodraw94:
Dontknowwhattodraw94 Featured By Owner Mar 28, 2017  Hobbyist Traditional Artist
Nice, I like how you made the face partly bald :)
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:iconacepredator:
acepredator Featured By Owner Mar 28, 2017
Someone must do an annual Raptor Week....
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:iconhublerdon:
HUBLERDON Featured By Owner Mar 28, 2017  Hobbyist General Artist
Noice!
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:icon105697:
105697 Featured By Owner Mar 28, 2017
Awesome rendition.
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:iconeliteraptor2015:
EliteRaptor2015 Featured By Owner Mar 28, 2017
Huzzah, my #1 favourite dinosaur! :D
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:iconglavenychus:
Glavenychus Featured By Owner Mar 28, 2017  Hobbyist General Artist
Nice!
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:iconxiphactinus:
Xiphactinus Featured By Owner Mar 28, 2017  Hobbyist Traditional Artist
GREAT!
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March 28, 2017
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