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Submitted on
June 5, 2010
Image Size
2.4 MB


6,897 (4 today)
125 (who?)
Nothronychus graffami by ScottHartman Nothronychus graffami by ScottHartman
The second species of Nothronychus, this one known from a more complete skeleton.

Edit: Updated the silhouette (darn those withers and their attendant neck thickness increases!) while also adjusting the stance ever-so-slightly.
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Dawley Featured By Owner May 2, 2014
I love therizinosaurids. Excellent work!
ScottHartman Featured By Owner May 10, 2014  Professional Digital Artist
Thanks, I'm fond of them as well.
PedroSalas Featured By Owner May 1, 2014  Hobbyist Traditional Artist
CarlosAshgalde Featured By Owner Jun 9, 2013  Student Artisan Crafter
Do you think Therizinosaurs had a slow metabolism like sloths? Personally I'd say they had the guts for it.
ScottHartman Featured By Owner Jun 9, 2013  Professional Digital Artist
I wouldn't be surprised, but this is a question we really shouldn't have to speculate on - someone needs to do histological work on both therizinosaurs and giant sloths.
ZEGH8578 Featured By Owner Mar 4, 2013
Now, this one I actually do have a hard time seeing balanced, like that. Wouldn't it have to be even more vertically posed, so not to fall on its face? The tail seems to offer next to no counter-weight, even the belly is positioned in front of the pelvis, and would pull it forward, at least from what it looks.
ScottHartman Featured By Owner Mar 4, 2013  Professional Digital Artist
It helps to see it in 3D (like in a skeletal mount). The belly is widest just in front of the pelvis, and the guts continue into the pelvis on these guys. As a result the CoG should be almost exactly where the front foot is placed (remember it's walking, so it's not in perfect static equilibrium).
palaeorigamipete Featured By Owner Mar 4, 2013  Hobbyist General Artist
is it me or did these dinos try really hard to walk like us? :rofl: the more therizinosaurs I see the more weirded out I am by how "vertical" they seem to be... XD
ScottHartman Featured By Owner Mar 4, 2013  Professional Digital Artist
I would have said they tried hard to walk like giant ground sloths, but yes, they seem to have gone vertical as much as they could.
th3punk1n4t0r Featured By Owner Mar 4, 2013  Hobbyist Writer
that analogy makes a lot of sense to me- I believe that ground sloths, therizinosaurids, and perhaps prosauropods follow a very similar body plan due to fulfilling the same ecological niche. I wonder if someone has taken the time to name such specific niches?
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