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yutyrannus by atrox1 yutyrannus by atrox1
Large selection of illustrations [link]
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:iconjokercarnage5:
JokerCarnage5 Featured By Owner Jul 29, 2015  Hobbyist General Artist
looks so awsome:)
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:iconi-phillip:
I-Phillip Featured By Owner Jun 23, 2015
The detail!
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:icontheprehistoricmaster:
My favorite dinosaur! :3 Amazing work!
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:icondonstock:
donstock Featured By Owner Mar 20, 2013
great detail. I heard this is the largest dinosaur with feathers discovered yet
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:iconlamastok:
Lamastok Featured By Owner Apr 6, 2013
Yes, but some dinosaurs known to be feathered, like Tyrannosaurus, were larger ;)
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:iconfredthedinosaurman:
FredtheDinosaurman Featured By Owner Dec 23, 2013  Student General Artist
No direct, solid evidence of a feathered T-Rex...just saying.
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:iconlamastok:
Lamastok Featured By Owner Dec 23, 2013
Give me one reason why T. rex wouldn't have feathers. 
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:icondovahkiinhu3br:
DovahkiinHU3BR Featured By Owner Oct 12, 2015
Tyrannosaurus rex could be feathered in adulthood, but certainly could not be covered in feathers.

T-rex clearely had warm blood due to it's violent and active lifestyle and due to the fact that it's growth rings show constant growth (just like modern mammals).

This means that t-rex would produce an amount of heat proportional to it's mass (and volume, because mass is the quantity of matter a body has and volume is the space the body occupies, and the bigger the mass the bigger the space occupied) and it would eliminate an amount of heat proportional to it's body surface area.

Imagine a cube with a 1 cm edge: it's area would be 6 square centimeters and it's volume would be 1 cubic centimeter. If it was a warm-blooded animal, it would eliminate more heat than it would produce, so it should have something to trap heat (like feathers or fur).

Now imagine a cube with a 10 cm edge: it's area would be 600 square centimeters and it's volume would be 1000 cubic centimeters. If it was a warm-blooded animal, it would produce more heat than it would eliminate, PLUS the fact that bigger masses trap more heat.

T-rex is comparable to the bigger cube: If it was covered in feathers it would overheat. In the Late Cretaceous, Earth was way warmer than today. It was so warm that the South Pole was a forest... and t-rex was found from Montana to Texas, wich tend to be very hot depending on the altitude and the season.

Having in mind that many western states were T. rex was found reach about 30 degrees Celcius in the summer, and the fact that in the Late Cretaceous North America was divided by the sea (palaeos.com/vertebrates/aves/i…), the California Current, the high altitudes and the fact that west North America was isolated (the current would have more impact on the smaller territory) would make the temperature cooler than twice today's temperature (60 degrees Celcius), making it have about 40 degrees Celcius as maximum temperature (wich still being hotter than Kenya). And as you can see California's mountains tend to have cooler temperature than the ones that are more far away from the coast, because it has more contact with the current).
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:iconlamastok:
Lamastok Featured By Owner Oct 13, 2015
Only problem is that feathers don't cause overheating :P Unlike fur, they can be used to keep heat out as well. 
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:icondovahkiinhu3br:
DovahkiinHU3BR Featured By Owner Oct 13, 2015
You only forgot that so does fur if the animal has a small amount of fur.
Why do you think that birds get "fluffed up" in cold days? Because huge amounts of feathres trap huge amounts of heat.
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:iconlamastok:
Lamastok Featured By Owner Oct 13, 2015
But they also isolate - you don't see birds in hot climates going entirely bald. Ostriches did bald up some, sure, but that's linked to their cursorial lifestyle. 
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(1 Reply)
:iconfredthedinosaurman:
FredtheDinosaurman Featured By Owner Dec 23, 2013  Student General Artist
Just because its relatives MIGHT have had feathers, doesn't mean the last of the kind had. We don't have any feather impressions to confirm if he had plumage as well. Therefore, "some dinosaurs known to be feathered, like Tyrannosaurus" is not true. It's possible, but you can't really say it as a fact.
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:iconlamastok:
Lamastok Featured By Owner Dec 23, 2013
Tyrannosaurus was a Coelurosaur, thus its ancestors had feathers. And I don't see why it would lose its feathers. 
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:iconfredthedinosaurman:
FredtheDinosaurman Featured By Owner Dec 23, 2013  Student General Artist
Some would say he didn't need it. In my opinion, if T. Rex had "feathers", it would probably have hairs like an elephant, very thin, and very few. A lot like this > amorousdino.deviantart.com/art…
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:iconwilliamstrother:
williamstrother Featured By Owner Apr 4, 2015
I agree with you.
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:iconlamastok:
Lamastok Featured By Owner Dec 23, 2013
My point is that feathers are not like hair. Comparing dinosaurs to mammals in matters of integument is a great mistake, for dinosaurs lack the brown fat which isolates mammals. Feathers, however, act as an isolator both for warm and cold temperatures.
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(2 Replies)
:iconkevinnichols:
KevinNichols Featured By Owner Mar 18, 2013
very nice
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:iconwatjong:
watjong Featured By Owner Dec 6, 2012
Very nice, I like the palette you chose (obviously I also like the asesome drawing)
2 thumbs up, sir!
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:icondeaddo:
Deaddo Featured By Owner Nov 26, 2012  Student General Artist
What a great texture!
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:icongozer-the-destroyor:
Gozer-The-Destroyor Featured By Owner Nov 25, 2012
That's funny.
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:iconsfoulkes:
Sfoulkes Featured By Owner Nov 25, 2012  Professional General Artist
just beautiful, great work.
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:iconherofan135:
herofan135 Featured By Owner Nov 25, 2012  Hobbyist Traditional Artist
Excellent design!
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:icontriggamafia:
triggamafia Featured By Owner Nov 25, 2012  Hobbyist Traditional Artist
Guess you didn't want an accurate coat of feathers on it.
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:icontonboko:
Tonboko Featured By Owner Nov 24, 2012
So fluffy! I want to pet him... but then he would eat me.
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:iconthemorlock:
TheMorlock Featured By Owner Nov 24, 2012  Student General Artist
Awesome!
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:iconyoult:
yoult Featured By Owner Nov 24, 2012  Professional General Artist
Well, the painting work is just wonderful. But I'm pretty sad about the lack of a decent plumage...
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:iconfredthedinosaurman:
FredtheDinosaurman Featured By Owner Dec 23, 2013  Student General Artist
It's covered in it, it's not lacking anything.
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:iconyoult:
yoult Featured By Owner Dec 25, 2013  Professional General Artist
Mind you I used the word "decent".
I didn't deny the presence of a plumage. But what is shown here doesn't really fit with what is described in the paper by Xing Xu
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:iconfredthedinosaurman:
FredtheDinosaurman Featured By Owner May 14, 2014  Student General Artist
Maybe it's a summer coat, you never know...
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:iconatrox1:
atrox1 Featured By Owner Nov 24, 2012  Professional
[link] plumage is best seen in large size
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:iconyoult:
yoult Featured By Owner Dec 25, 2013  Professional General Artist
Sorry for the delay, Sergey.
It's not a problem with my eyesight, I saw the plumage you drew.
My problem with the depiction is that it's somewhat contrary to the paper itself.
The described filaments are way longer and the plumage much more extensive than you showed here.
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:iconromanyevseyev:
RomanYevseyev Featured By Owner Nov 24, 2012
Ага, нехилый взерь получилси=))
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:icongunchica:
GunChica Featured By Owner Nov 24, 2012  Student Traditional Artist
Awesome!
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:iconrajasaurusnarm:
RajasaurusNarm Featured By Owner Nov 24, 2012
КАКОЙ ХАРОШИЙ ВЗЕРЬ!!! Главное, перышки - без фанатизма
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:iconplioart:
Plioart Featured By Owner Nov 24, 2012  Hobbyist Digital Artist
Серёга великолепная поза. живенько смотрится.
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:iconatrox1:
atrox1 Featured By Owner Nov 24, 2012  Professional
Поза достаточно заезженная, рисовал поверх своего старенького аллозавра [link]
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:iconplioart:
Plioart Featured By Owner Nov 25, 2012  Hobbyist Digital Artist
Серёга не скромничай, хоть и поза заезжина, но она работает. дино в ней динамично смотрится.
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:iconantresoll:
Antresoll Featured By Owner Nov 24, 2012  Hobbyist Traditional Artist
Великолепно! это часть будущей картины?
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:iconatrox1:
atrox1 Featured By Owner Nov 24, 2012  Professional
Это отрисовка персонажей для сайта worldofnature.ru . Фон там будет простенький.
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:iconfragillimus335:
Fragillimus335 Featured By Owner Nov 24, 2012  Hobbyist General Artist
Cool!
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November 24, 2012
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