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Kentrosaurus by ScottHartman Kentrosaurus by ScottHartman
Despite there being a lot of Kentrosaurus material, and it being well-described, this still proved to be a challenge because it's not all from specimens of the same size. I'm still not 100% convinced that the forelimbs don't need to be scaled up relative to the hindlimbs, but I've left them at the same size as the Berlin composite mount. The other elements seem to check out - and I'll say that I can't replicate the extremely tall body that is extremely short front to back like in some previous reconstructions.

Edit: After some discussion with Heinrich Mallison I've updated the tail spikes. As for the underlying data on the tail spikes, as well as the unresolved issue of where the large body spike goes...there will be more on that later. In the meantime, keep in mind that whether there is a shoulder spike, a hip spike, or some other configurations is not really settled for Kentrosaurus.
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:iconatlantis536:
Atlantis536 Featured By Owner Feb 19, 2017  Hobbyist Traditional Artist
This skeleton I saw in a game called Dinosaur Puzzle
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:icondidusineptus:
DIDUSINEPTUS Featured By Owner Jan 17, 2017
I like this new-look version - it has a sinuous grace that appeals (particularly compared to earlier hump-backed stegosaurian tropes). Well done.
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:iconxstreamchaosofficial:
XStreamChaosOfficial Featured By Owner Aug 20, 2015  Hobbyist Traditional Artist
Why do some Stegosaurians have spikes on their shoulders?
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:iconpaleo-reptiles:
Paleo-reptiles Featured By Owner Aug 19, 2015
Nice
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:icononychodus:
Onychodus Featured By Owner Aug 10, 2015  Student General Artist
Wow, I knew Kentrosaurus had some huge tail spikes, but, WOW are they huge!
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:iconpappasaurus:
Pappasaurus Featured By Owner Aug 10, 2015  Hobbyist Artist
Awesome, that was nicely done.
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:icondinopithecus:
Dinopithecus Featured By Owner Aug 9, 2015
Those are some seriously huge spikes...
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:iconkazuma27:
Kazuma27 Featured By Owner Aug 9, 2015  Hobbyist General Artist
Quite serpentine, i say... Bah, maybe it's that long neck or the back!
By the way, if i'd bet how the body spikes were positioned, i'd say slightly higher tha usually restored, maybe closer to the plates?
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:iconarchanubis:
Archanubis Featured By Owner Aug 8, 2015
My favorite stegosaur!  Good to see you've finally gotten around to a skeletal.
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:iconsounder1995:
Sounder1995 Featured By Owner Aug 8, 2015  Hobbyist Traditional Artist
Well, hopefully you saw this one coming: How do you think this genus (& I guess stegosaurs in general) mated?
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:iconscotthartman:
ScottHartman Featured By Owner Aug 8, 2015  Professional Digital Artist
Parthenogenesis. Actually, it's probably not that big of a problem; the tails are pretty flexible, so the female presumably just swung it to the side and a male mounted rearing upright from a 3/4 rear angle.
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:iconsounder1995:
Sounder1995 Featured By Owner Aug 9, 2015  Hobbyist Traditional Artist
Wow, I've never heard that hypothesis before. Thanks for your input! Do you think we could ever know for sure without finding two specimens who died and fossilized together while reproducing? I guess either that or some good soft tissue remains of the interior of a stegosaur's cloaca?
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:iconphillgonzo:
PhillGonzo Featured By Owner Aug 8, 2015  Professional Digital Artist
One of my favorite Dino Riders. 
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:icongreen-mamba:
Green-Mamba Featured By Owner Aug 8, 2015
aa, it's my favorite dinosaur!  different than i'm used to, but i like it.
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:iconscotthartman:
ScottHartman Featured By Owner Aug 8, 2015  Professional Digital Artist
Glad I haven't ruined it for you.
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:iconheinrichm:
HeinrichM Featured By Owner Aug 8, 2015
Furthermore, there is no firm evidence on limb length ratios, as Scott pointed out - but the mounted ulnae, humeri, femora and tibiae all belong to very mature individuals, if onotogenetic ossification of fibrous cartilage is any indication.
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:iconscotthartman:
ScottHartman Featured By Owner Aug 8, 2015  Professional Digital Artist
Agreed about them all being adults - but of course adult size itself varies, especially if there is marked sexual dimorphism in Kentrosaurus, as some have suggested.
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:iconheinrichm:
HeinrichM Featured By Owner Aug 8, 2015
nice works, Scott!

A few remarks:
- yes, tail spikes in pairs were found articulated with an articulated tail.
- the tail tip pair of spikes was found articulated with the last few caudals, so we know the final pair was all the way at the tip of the tail.Much further back than in the reconstruction.
- there is no indication whatsoever that the asymmetrical spike that Hennig and Janensch placed on the hip goes anywhere but on the hip. First of all, there is a matching rugosity on the hip, second, there is no matching anything on the shoulder (in contrast to Gigantospinosaurus, where the spike base has a shape matching the scapula), and third, the shape of the spike doe not indicate any sensible way of anchoring it in the skin on top of massive moving muscles so that it can point up and out - again in contrast to the much differently shaped and proportioned Gigantspinosaurus spikes.
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:iconolofmoleman:
olofmoleman Featured By Owner Aug 8, 2015   Digital Artist
Nice. I wonder what's causing the tall look in many of those previous reconstructions.
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:iconscotthartman:
ScottHartman Featured By Owner Aug 8, 2015  Professional Digital Artist
Obviously I can't look into the minds of others, but if I had to guess I'd suppose it has to do with the particularly tiny forelimbs - since Stegosaurus really does have quite a deep and short (front to back) body riding atop short forelimbs, and Kentrosaurus seems to if anything exaggerate  those limb proportions, then trying to make the vertebral column fit in a similar manner results in a dorsal column that is realllyy curved - more so than the bones would easily accomodate.
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:iconpeteridish:
PeteriDish Featured By Owner Aug 8, 2015  Hobbyist General Artist
one of my favourite dinosaurs!
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:iconzegh8578:
ZEGH8578 Featured By Owner Edited Aug 8, 2015
It looks oddly satisfactory, I must say. Not quite as expected, but in a way I'm totally fine with :D

This exact plate-spike arrangement, is it something we have just decided to go with, out of a lack of better alternatives, or is it something we know for certain? Afaik, neither Kentrosaurus nor Dacentrurus (which is often described as having the same arrangement) have their plates or spikes articulated with the skeleton. Wanting to draw Miragaia, I tried to get to the bottom of it, with both Kentrosaurus and Dacentrurus (because sources kept comparing it to Kentrosaurus), but never got much wiser. In the end I simply conceded, and went with the Kentrosaurus-arrangement, which is just as well, really, I just wanted to know where we got it from (and how come D. was so frequently compared with K.)
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:iconscotthartman:
ScottHartman Featured By Owner Aug 8, 2015  Professional Digital Artist
As Heinrich mentions below, there was an articulated tail section with spikes attached, though it wasn't all excavated in articulation (no real way to transport that sort of a block at the time!). But the paired plate/spike arrangement seems to be typical of stegosaurs, except of course Stegosaurus.
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:icondontknowwhattodraw94:
Dontknowwhattodraw94 Featured By Owner Aug 8, 2015  Hobbyist Traditional Artist
I just finished drawing one on paper and now this appears. I needed this a lot, you know xD

But now it's here anyway: I've always been unsure about how many fingers and toes stegosaurs have. Are it five fingers and three toes?
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:iconlolistink:
lolIstink Featured By Owner Aug 7, 2015
I guess it's about time you posted this!
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:iconscotthartman:
ScottHartman Featured By Owner Aug 8, 2015  Professional Digital Artist
It's not like I was sitting on the finished version for a prolonged period of time :P
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:iconijreid:
ijreid Featured By Owner Aug 7, 2015  Hobbyist Digital Artist
Excellent work! :clap:
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August 7, 2015
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