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TheDragonofDoom β€” 2016 Tyrannosaurus Rex Muscle Study

#anatomy #muscle #paleo #paleoart #reconstruction #skeletonstudy #theropoda #trex #tyrannosaurusrex #tyrannosauridae #saurischia #suethetrex #fmnhpr2081
Published: 2016-07-26 18:38:37 +0000 UTC; Views: 10774; Favourites: 151; Downloads: 0
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Description Here's my muscle study on the T. Rex named Sue (FMNH PR 2081)! Muscles done in Prismacolor markers, white pen, and colored pencils. Labels done in Illustrator.

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Comments: 12

Evodolka [2016-11-19 14:41:13 +0000 UTC]

must have been a pain to think of where the muscles went and how they would have looked (you know because we only have skeletons) but you did a great job with what you made here i love it

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TheDragonofDoom In reply to Evodolka [2016-11-19 18:13:22 +0000 UTC]

It's indeed challenging, but once you know where muscles insert and attach on modern day animals you can kind of guess where they go on dinosaurs. Though some are still challenging, like trying to figure out how muscles worked in a sauropod's neck.

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Evodolka In reply to TheDragonofDoom [2016-11-19 18:57:08 +0000 UTC]

alright then that makes a lot of sense
i imagine the closest thing we have to compare is either a giraffe neck (both VERY tall animals) or a long necked bird like a flamingo or somethingΒ 

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Borderwalker [2016-08-16 10:51:58 +0000 UTC]

Why is the trapezius so big? To me that would indicate the t-rex using it's arms for lifting, but then other muscles on the arm are so minute in comparison. Seems off to me. So I'm curious, what is the thinking or theory behind it?

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TheDragonofDoom In reply to Borderwalker [2016-08-16 19:45:22 +0000 UTC]

To my knowledge the trapezius function is to hold the shoulder blade against the body and to pull the shoulder blade upward. It might also be able to pull it forward and backward. How much movement they have I 'm not so sure. I just went with my best understanding with where the trapezius origin and insertion is generally at on modern day animals and reptiles. I hope this helps!

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Borderwalker In reply to TheDragonofDoom [2016-08-24 12:39:57 +0000 UTC]

I can see the basis for your thinking here, but even so.

I've been looking at muscle and skeleton models of chicken and crocodiles, and I've been looking of skeleton models of t-rex.
I can't find any support for the trapezius taking this sort of mammal-looking form. At the very best it would be more like a broad band going vertically up to the spine from the trapezius and the arm, like it does in crocodiles.

You say that the function of the trapezius is to keep the shoulder blade against the body, but that is usually in relation to the arms or forelimbs of a creature which movements would put strain on the position of the shoulder blade. I guess that it is possible that the t-rex did use it's small arms for strenuousΒ  activities, but even with that in mind I think the trapezius you have proposed here would be over dimensioned and far too broad against the spine.

Still, I'm enjoying this opportunity to discuss t-rex anatomy as I'm not usually able to do so, so I hope you take my quesitons for what they are worth and not as an attempt to be argumentative.

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TheDragonofDoom In reply to Borderwalker [2016-08-24 18:39:32 +0000 UTC]

Oh no, I enjoy this discussion, it really makes me think and you give valid points, thank you!

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alienator65 [2016-07-27 17:26:22 +0000 UTC]

I think the jaw and neck muscles should bulge more like a crocodiles, but this is good

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dakob112 [2016-07-27 17:17:54 +0000 UTC]

Man... How awesome would it be to grill up some T-Rex back straps!!!

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TheDragonofDoom In reply to dakob112 [2016-07-27 18:11:34 +0000 UTC]

Definitely feed a lot of people, lol!

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DinoLover09 [2016-07-26 19:39:13 +0000 UTC]

Amazing!!!

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TheDragonofDoom In reply to DinoLover09 [2016-07-26 19:49:43 +0000 UTC]

Thank you!

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