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About Traditional Art / Professional Member NimaMale/United States Group :iconprehistory-alive: Prehistory-Alive
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Dreadnoughtus schrani, or as I call it, Lacovara's titanosaur, is the newest giant on the block. Just described, after years of painstaking reconstruction and cementing thousands of fragments together. Not the biggest dinosaur, but still very impressive for its size and completeness.

Find out more on my blog here:…

And here's the announcement from Drexel U:…

And the paper itself:…

No matter whether you agree or disagree with the paper's conclusions, this is one cool beast. And one impressive name.
Post your thoughts below. What do you like about this find? Heck, what's not to like!


Artist | Professional | Traditional Art
United States
Current Residence: A dinosaur museum/bone bed near you
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Personal Quote: "It must be new or bust!"

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TyrannosaurusPrime Featured By Owner 6 days ago
The new Spinosaurus paper:…
Paleo-King Featured By Owner 5 days ago  Professional Traditional Artist
Interesting. I have my doubts that the legs were that short, the compositing is (as is usual with Sereno) probably a bit off on the cross-scaling. But they probably were a good bit shorter than the speculations of previous skeletal models. Miyess did a pretty good interpretation of the legs just recently.
thedinorocker Featured By Owner Sep 11, 2014
Hi Mr Nima it s me again!
do you read the  Dreadnoughtus paper?
what do you think of the quite horizontal neck?
Working on the 3D skeletal the neck appear to me forced down using as reference the recostruction in the paper...
Paleo-King Featured By Owner Sep 12, 2014  Professional Traditional Artist
The horizontal neck is not correct. It seems to be the common convention to illustrate horizontal necks especially when the complete skeleton is not known. It's conservative and convenient. However the paper is about a new discovery, not neck posture, so it's a bit unfair to single it out for criticism when there are real offenders out there which flat-out deny the possibility of vertical necks. This paper is definitely not one of them.

Dreadnoughtus does appear to have a very long neck, somewhere between Futalongkosaurus and Rapetosaurus in proportions. And like both of those animals, Dreadnoughtus was most likely a treetop feeder with a steep neck. The neck of Dreadnoughtus (what's left of it) is also considerably crushed, and the first few dorsals are missing, so how it all articulated is a bit of gueswork. However, it's no secret that the hands were not recovered and the 3D model treats it as if they were either extremely short of non-existent! There's almost no room for them above the horizontal place which its feet touch. Adding in proper-sized titanosaur hands would lengthen the arms and jack up the incline of the entire spine quite a bit, and that's even before you start making guesses about the neck position.

Also the ribs are crushed and warped which can create an illusion of a narrow-bodied animal. Based on the shape of the rib heads however it appears the ribs once curved out far more - ribs tend to be some of the least solid shape-holders out of all the bones in a sauropod body, they can often get warped or distorted out of their real shape by high-pressure strata processes. In the 3D skeletal they are replicated and flipped to create the illusion of a rib cage which is too thin. The 3D skeletal, it must be emphasized, is made of scans of the bones as they currently are, not as they likely once were. Dreadnoughtus may be known from a lot of material, but it is badly crushed in many places. The ribs, neck, and some dorsals exhibit more crushing than any other giant titanosaur. So when people try to do GDI mass estimates based on the 3D model, they are assuming a lot of things which are merely artifacts of crushing during fossilization. This animal was invariably much more voluminous in life.
thedinorocker Featured By Owner Sep 13, 2014
Thank you very much I see some bones are distorted too but I ignored the number and the crush degree.
For the neck the 3D scan of the skeleton does not support an horizontal posture
Paleo-King Featured By Owner 6 days ago  Professional Traditional Artist
True. Even the shoulders should be higher than in the scan, since it leaves barely any room for the hands at the bottom of the arms. And high shoulders = vertical necks, as a general rule. Of course by vertical I don't mean it has to be "brachiosaur-level" vertical, i.e. 80-90 degrees up. But at least semi-vertical (60 degrees or more) seems likely for most super-long necked titanosaur species.

The skeletal drawing that accompanied the paper, frankly SUCKS. Even the shapes of the vertebrae are completely off. But we must remember the purpose of the paper was to provide an in depth description of the bones, and differentiate them from what was known before, not to accurately reconstruct the whole animal. That's for later papers to decide. Easily 50% of the dinosaur papers out there are based on refuting something you don't agree with.
Paleo-King Featured By Owner Sep 7, 2014  Professional Traditional Artist
Nice, I downloaded. This one will be fun I can tell.
ElSqiubbonator Featured By Owner Sep 4, 2014
I have a question about Dreadnoughtus (my GOD that's an awesome name--even better than Sauropesiedon!). Is it the same dinosaur that was discovered in a bone bed in Argentina a few months ago?
Paleo-King Featured By Owner Sep 7, 2014  Professional Traditional Artist
No, that animal was from Chubut and hasn't yet been named. Dreadnoughtus isn't really a new find, has been undergoing lab preparations in Pittsburgh for several years now, I blogged about it a few years ago as "Lacovara's titanosaur" when it didn't yet have a name. The Drexel University research team also sometimes nicknamed it "the forklift buster".

Dreadnoughtus was in a lot of fragments that had to be cemented together. Some of the vertebrae were also badly crushed. The Chubut titanosaurs by contrast are mostly limb bone specimens with very almost no crushing or fragmentation. But Dreadnoughtus appears to be far more complete than any of the Chubut Monster specimens. Plus the two animals appear to belong in different (though closely related) families.
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