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Monopteryx — T.Rex
Published: 2012-11-23 18:23:39 +0000 UTC; Views: 11201; Favourites: 203; Downloads: 185
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Comments: 31
Looks cool! Really looks like it has weight on it.
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Yaaay! I love the way you draw their feet--there's a real sense of weight and power to them.
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Rex's arms were still useful. These are tiny. In fact, a Rex's arms are only as long as a man's arm, though this artist has forgotten that Rex's arm musculature is pretty high. It could lift 500 lbs of weight in its arms, as new studies confirm.
As well, the arms aren't pointed in a correct position either. Apparently, Dr. Thomas Holtz says the hands should not be facing each other.
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Where does he say so? And how should they face? Inward facing volar sides of the manus are inferred for all theropods as far as I know.
Yeah, the arms on this piece appear a little too tiny and slender (they are more slender and far smaller than most other theropod arms, but still comparatively robust structures). Very nice artwork apart from that tough!
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Honestly, I don't know. That's what he told me when I drew a picture of Tyrannosaurus Rex. You can find it in my deviant profile. =3
But yeah, I thought it was good artwork apart from that tiny problem.
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Hmm, strange. But nice work on your drawings!
T, rex' arms should be tremendously more robust than human arms for sure, that's something to begin with.
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I was bit unsure on what he meant too. >-<
And thanks man! I'm going to do more in the future.
Yes, I tried to emphasis that by showing muscular structure through the arms.
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Dinosaurs DID have their hands face each other. I'm pretty sure Holtz ever said they didn't either. Maybe you got that confused with the other way around. As for the arms, yeah, a bit too small, granted. They should be about 1/3 longer.
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No. I have a drawing of it and he said that the hands faced towards the back, not each other. I have no idea on where he got that kind of idea from. Holtz is a strange man who wants to try and change the Tyrannosaurid family into a bunch of fluffy feathered creatures. Which what really doesn't support his theory is on the size of these monsters.
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Now I might have an idea on what's going on... It's one of two options:
-Holtz was a paleontological consultant for Walking with Dinosaurs back in the 90s. The thing is, he didn't know much on skeletal anatomy at the time. (Tyrannosaurus skeletal: i.livescience.com/images/i/000… The end result was a rex that looked like it was on drugs.
-You may or may not have consulted with a poser. I dunno.
Also, this might be interesting to read: archosaurmusings.wordpress.com…
It's a trackway of a theropod that had its hands toughing the ground. Instead of seeing the palms though, only the sides were in the dirt, and left an impression.
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Interesting. He never really gave me an explanation on why he believed it. But, he seems pretty legit since he does post on Facebook quite often. But you may be right.
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That makes no sense whatsoever. It was discovered in 2002 that dinosaurs didn't pronate (had their hands face backwards) their hands without breaking them, as their wrists prevented it.
As for the feathers and size, there's still Yutyrannus. It was an earlier relative that was completely feathered and the same size as Allosaurus. That pretty much dispels the size matters deal.
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Well, volume increases faster than surface area, so even a relatively small increase in size results in a lot of additional volume. For reference, Y. huali is estimated at around 1.4 tons, while T. rex weighted up to 6.8 tons, which is about the as heavy as a large african elephant. Additionally, the habitat of Y. huali is believed to be a relatively cold environment, while crocodilians in the fossil record point at the maastrichtian North America being sub-tropical. While I can totally see T. rex posessing some remnant of the plummage which covered it's predecessors, I find it likely that tyrannosaurids lost much of their feathers when thay grew from the relatively slender basal forms to the giants of the late cretaceous giants while their environment got warmer as well.
Of course we will not know until fossils show us how the skin of the large tyrannosaurids looked.
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Well, there is only one condition that feathers are useful for if you are a large theropod: Heat regulation. If you're size is not enough to keep heat in your body, feathers would be the best option.
I highly doubt it. Allosaurus and Yutyrannus were not 40ft long predators though that exceeded weight of over 6 tonnes. If you are an animal who's environment stays constant (Rex's land was wet, hot, marshy, landscape), then feathers would be highly unlikely to be put on your body.
Tyrannosaurus Rex having feathers is invalid in my opinion. Skin is much more of use, and we have skin impressions of Rex's, but no feathers. That basically dispels the idea of Rex having feathers too. But feathers at that time were not as beautiful and colorful, protofeathers were just dull and ugly looking.
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excellent. I love how you fully integrate the dewlap with the rest of the neck/jaw skin, very believable.
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Спасибо!
Да надо бы... я уже даже почти настроил себя нарисовать сцену
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This is classic Rex
Only juveniles has plumage
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Not only. I read on Theropoda blogspot that a 2-ton elephant has a body surface area of approximately 110,000 square cm. Its coefficient surface/mass is 55 kg cm square.
The outer surface of a Tyrannosaurus of 6 tons is of about 560,000 square cm. Its coefficient surface/mass is about 93 cm square kg.
Its surface dispersant is in proportion well 1.7 times greater than that of an elephant of 2 tons.
A Tyrannosaurus 6 tons generates the same heat of a mammal of 1 tonne.
Tyrannosaurus produces less heat than an elephant but at the same time disperses more easily, then it seems reasonable to assume that Tyrannosaurus could disporrre of a temperature control system integumentary similar to the plumage.
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PS. Waiting for your realistic feraligatr dude!
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It's always been hard for me to find T. Rexs that look accurate and cool at the same time, this is one of them.
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