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Huaxiaosaurus is Freaking Huge by Fragillimus335 Huaxiaosaurus is Freaking Huge by Fragillimus335
Huaxiaosaurus is a massive new hadrosaur from China. A mounted composite skeleton measures 18.7 meters long.  At that size these Hadros probably outweighed the Berlin Giraffatitan specimen, However the Chinese mounts seem to be oversized, and lengths exceeding 16m seem unlikely. To help grasp it's size, at its hip it is about the height of a small house.....

A kind little 1.7m SH rhino provides scale...

Note: Huaxiaosaurus is a real dinosaur, but it remains to be seen if it is a new species, or just a specimen of Shantungosaurus.
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:icondinofuzz:
Dinofuzz Featured By Owner Mar 1, 2014  Hobbyist General Artist
Bigger, than the Berliner G. brancai? Oh, my! Even that was one of the most impressive mounted skeletons, I've ever seen! And when imagining this hadrosaur... Holy crap!
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:iconfragillimus335:
Fragillimus335 Featured By Owner Mar 1, 2014  Hobbyist General Artist
Well, as it turns out, probably not.  The Chinese mount was oversized and mis-proportioned. The real animal was probably 15-16 meters long and ~15 tons.  Still huge, but not Brachiosaur huge!
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:icondinofuzz:
Dinofuzz Featured By Owner Mar 2, 2014  Hobbyist General Artist
Yeah... would be a bit extraordinary.
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:iconteddyblackbear2040:
TeddyBlackBear2040 Featured By Owner Feb 3, 2014  Student Digital Artist
Wow did not know this creature existed
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:iconfragillimus335:
Fragillimus335 Featured By Owner Feb 3, 2014  Hobbyist General Artist
It's pretty new, and is probably just a Shantungosaurus.
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:iconron14:
Ron14 Featured By Owner Sep 24, 2013

That´s really a very nice drawing!

And possibly/probably quite realistic in size too, incredible as it may seem. What makes it even more amazing is the fact that the large specimen on which the species description was based (the one you mention, 18.7 m long) may not even have been full-grown, because its sacral vertebrae are not yet fused.

Did you know that huge tracks of giant duckbills have been found in coalmines in Utah and Colorado? Look for 'Dinosauropodes', especially the ichnospecies D. magrawii. You could call that one the duckbill equivalent of Ceratopsipes :-)

The longest distinct tracks are 1.36 m long (4.5 feet), with indistinct hints of some even bigger ones. Since the absolute minimum ratio of hip height to hind foot (pes) length is 4 and the average about 5.5 (the maximum about 6), this would indicate a hip height of at least 5.5 m (18 ft), more likely around 6.8 – 7.5 m (roughly 22 - 25 ft), possibly more. And that is height at the hips! That’s even pretty impressive for a sauropod!

I have been wondering whether maybe such giant duckbills arose in the absence of sauropods, filling that niche. In Late Cretaceous North America there was an (approx.) 30 million year absence known as the 'sauropod gap', until the latest Cretaceous (Maastrichtian, about last 5 million years), when there was Alamosaurus, possibly an invader from South America. Notable that the giant Sout American sauropod Puertasaurus is very Late Cretaceous, Maastrichtian. I am not sure, but there may have been a similar sauropod absence in Late Cretaceous (East) Asia. During this stage, there were giant duckbills in North America and East Asia, in the eastern US there was Hypsibema, in the west Lambeosaurus (Magnapaulia) laticaudus, possibly also very large Edmontosaurus. And of course the intriguing tracks. In East Asia there is Shantungosaurus (plus the two related mentioned species, possibly synonyms), possibly also Saurolophus and others.

BTW, according to latest insights Huaxiaosaurus is indeed probably Shantungosaurus, and Zhuchengosaurus as well.
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:iconfragillimus335:
Fragillimus335 Featured By Owner Sep 24, 2013  Hobbyist General Artist
Thanks! :)

In regards to the Dinosauropodes tracks, I suspect a Shantungosaurus sized animal made them.  The foot to hip ratios of 5.5 could be accurate, but the Dinosauropodes tracks include a large "heel" that increases the length by almost 2 feet. The foot on the living animal was probably 80cm-1 meter long.  This indicates a 12-15 meter hadrosaur.
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:iconron14:
Ron14 Featured By Owner Sep 24, 2013

Finally, that looks like a white or square-lipped rhino, the largest rhino species. I have seen them up close (even touched one), I thought they were big.

Nice paleo-art, keep up the good work! When are you going to do Alamosaurus (I mean the really big ones, according to the latest discoveries), and B. nougaredi?

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:iconron14:
Ron14 Featured By Owner Sep 25, 2013
And I forgot to ask: since these duckbills, even the very big ones, could stand and walk on their hind legs, could you also show this giant in an upright position? That must be even more impressive!
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:iconshinyaquablueribbon:
ShinyAquaBlueRibbon Featured By Owner Sep 12, 2013  Student General Artist
D8 Wow. That's a big dinosaur. 
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