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Your dinosaur art!
#16
Here is "Amphicoelias" fragillimus. This is probably the smallest drawing of this species I have made yet. It is still pretty huge at 34 m. and around 60 t. but maybe it doesn't top Argentinosaurus.

It is based on several skeletals I found online. I mostly used Haplocanthosaurus and Lavocatisaurus for scaling and proportions while I estimated the neck allometricaly just like Carpenter did in his 2018 paper. But my version has a slightly longer neck cause it is based on Haplocanthosaurus and not Limaysaurus. I used Limaysaurus only for the height of the vertebrae.

[Image: 20190603-185702.jpg]
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#17
Here is Xenoposeidon, a much smaller and slightly less mysterious relative of Maraapunisaurus. It is also known only from a partial vertebra which fortunately hasn't been lost. The vertebra's morphology has made the animal's classification very difficult.

In order to symbolize its nature as a bizzare and "alien" dinosaur I gave it this unusual coloration with reversed countershading.

[Image: 20190605-115713.jpg]
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#18
Here is FMNH PR 25112, a diplodocid specimen commonly referred to as an Apatosaurus. It is based on skeletals by G. S. Paul and bricksmashtv (Deviantart).

[Image: 20190615-112518.jpg]

This is Amphicoelias altus, which is based on FMNH PR 25112. Basically it is the same with a shorter torso.

[Image: 20190615-111929.jpg]

Here is a comparison with Maraapunisaurus fragillimus. Clearly, Maraapunisaurus looks far more biology-friendly than when it was believed to have been a 60 m. Diplodocid.

[Image: 20190615-112222.jpg]

Since I want to remember the "A. fragillimus" craze I met when I entered the web's zoological community, I will make a new drawing of A. fragillimus as a diplodocid and compare it to the new rebbachisaurid version.
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#19
Here is "Amphicoelias" fragillimus as a basal diplodocid. It has the same proportions as Amphicoelias altus, excluding an allometricaly lengthened neck.

[Image: 20190622-021347.jpg]

Here it is compared to its new version, Maraapunisaurus. There is obviously an immense size difference.

[Image: 20190622-021358.jpg]
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#20
I just finished Tornieria. It is based on Scott Hartman's skeletal of Supersaurus but it has slightly taller forelimbs. I will use the same proportions for Supersaurus, but on a much larger scale of course.

[Image: 20190626-222710.jpg]
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#21
Here is Kaatedocus, in case anyone was curious to see this tiny sauropod. Quite remarkable how Kaatedocus and Tornieria, both relatives of Supersaurus, were once considered species of Barosaurus. Then there is BYU 9024, the giant cervical vertebra that is claimed by some to have come from a Supersaurus and by some others to have come from a giant Barosaurus. I suppose Supersaurini are very similar to Barosaurini.

[Image: 20190627-160908.jpg]
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#22
I'm back to Athens and I have some new sauropods for you. Here is one of my favorite dinosaurs, the super lizard. It is based on Scott Hartman's skeletal (https://www.deviantart.com/scotthartman/...-359738534) but it has slightly taller forelimbs because I used Tornieria's limb proportions. The individual you see here is scaled up to the size of BYU 13744 and BYU 13786, a giant ulna and humerus included in the mess that are the Dry Mesa Quarry fossils. Lovelace, Hartman and Wahl (2007) doubted that these bones really belonged to Supersaurus because they were longer than what is expected from the holotype individual. I just assumed that they came from a very large individual, in the same size range as Maraapunisaurus and BYU 9024 (Barosaurus sp.?), which I am going to make soon.

Using Tornieria's proportions also kinda contradicts bricksmashtv's theory that Supersaurus was the inclined weirdo among diplodocids (https://www.deviantart.com/bricksmashtv/...-768941221). Its vertebra column is only a little higher above the ground at the shoulders than at the hips. 

[Image: 20190706-232224.jpg]

Using similar proportions I also made Dinheirosaurus. Basically it has shorter spines and a slightly shorter neck.

[Image: 20190706-232305.jpg]

And here is Galeamopus. They are both based on Scott Hartman's new skeletal (http://www.skeletaldrawing.com/sauropods...galeamopus) but with longer femora to fit the proportions of G. hayi, which I got from Fossilworks. Apparently the femur on Hartman's skeletal is as long as the preserved length mentioned in the description of G. pabsti, even though it mentioned in the paper that the bone lacks one end.

[Image: 20190706-232402.jpg]
[Image: 20190706-232504.jpg]

I'm close to ending Diplodocidae. Keep up with my work.
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#23
Today I devoted my time to Barosaurus. Here it is. It is based on Scott Hartman's skeletal. This upwards curved neck looks sexy.

[Image: 20190707-221513.jpg]

I also made BYU 9024. Like other people around the web, I am cautious with assigning it to Barosaurus lentus because it is just too big to be one.

I assumed the giant cervical vertebra to be a C11 rather than a C9 based on some photos I saw on SVPOW and a few comments I read. Also, the neck is issometrically scaled based on the vertebra but the rest of the animal is allometrically shrinked by a little bit. The length is 42,7 m. and I estimated the mass at approximately 55 t., which is slightly less than a large Supersaurus. The neck is 15,5 m. long. This might be the largest neck from which there is material. However there is also the 17 m. neck of an undescribed Mamenchisaurus that has been mentioned by Gregory S. Paul and there is also Argentinosaurus, from which we don't have any neck material but we can assume it had a very long neck.

[Image: 20190707-221634.jpg]

Here is a comparison of the two species. They are kinda like Supersaurus and Dinheirosaurus. The little and the big brother.

[Image: 20190707-221812.jpg]

Here is a comparison with Supersaurus. You can see that they are pretty close in size.

[Image: 20190707-221937.jpg]

With BYU 9024 I have finished the three Jurassic giants. All of them from North America.

[Image: 20190707-222118.jpg]

Or have I? We will see when I make Brachiosaurus and Ultrasauros. They are both coming pretty soon. I have to make Diplodocus first.
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#24
I may have to remake Supersaurini cause I forgot to scale the pelvic and thoracic girdles. Maybe I will also make a composite skeletal.

Update: I made a skeletal.

[Image: 20190708-085346.jpg]

Update: I finished the skeletal.

[Image: 20190708-164016.jpg]
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#25
New drawings of Tornieria and Supersaurus, this time taking Tornieria's huge scapula into account. This inclination makes their long necks mire useful for high browsing, so it justifies the colossal size of Supersaurus. Also, the long scapula explains the unusually deep ribcage.

[Image: 20190711-124752.jpg]

[Image: 20190710-234911.jpg]

I hope you can see the pictures because I can't.
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#26
<p>Here is Brachiosaurus. It is based on a skeletal by bricksmashtv (Deviantart) and scaled after the Potter Creek specimen. It seems like Brachiosaurus is still one of the biggest dinosaurs even after the discovery of several giant titanosaurs. It is a candidate for the title of the biggest Jurassic dinosaur and definitely one of the tallest dinosaurs to have existed.&nbsp;</p><p><img src="https://i.postimg.cc/DZGW0B27/20190716-210848.jpg"><br></p><p>


There seems to be a glitch with "preview post".</p>
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