How the T-Rex Lost Its Arms

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  • Published on:  Tuesday, June 26, 2018
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    Tyrannosaurus rex was big, Tyrannosaurus rex was vicious, and Tyrannosaurus rex had tiny arms. The story of how T-Rex lost its arms is, itself, pretty simple. But the story of why it kept those little limbs, and how it used them? Well, that’s a little more complicated.

    Thanks as always to Nobumichi Tamura for allowing us to use his wonderful paleoart: http://spinops.blogspot.com/

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    References:
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    Brusatte, Stephen L., and Thomas D. Carr. "The phylogeny and evolutionary history of tyrannosauroid dinosaurs." Scientific Reports 6 (2016): 20252.
    Burch, Sara. Osteological, Myological, and Phylogenetic Trends of Forelimb Reduction in Nonavian Theropod Dinosaurs. Diss. The Graduate School, Stony Brook University: Stony Brook, NY., 2015.
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    Erickson, Gregory M., et al. "Bite-force estimation for Tyrannosaurus rex from tooth-marked bones." Nature 382.6593 (1996): 706.
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Comment

  • Andrey Dariy
    Andrey Dariy  15 hours ago

    How many how many Velociraptors are usually in packs

  • Hung Pham
    Hung Pham  yesterday

    That running guy had a terrible posture btw.

  • The King
    The King  yesterday

    what if thier aems were wings?

  • Tunturi Gorilla

    You don’t need to arm shame Tee Rexy like that🙄

  • Jemarques Bruens

    AWESOME THIS REALLY HELPED ME IN SCHOOL!!!!!!!!!!!!!!!!!!!!!!1

  • levom the retard

    but he does have arms

  • Mar.K
    Mar.K  2 days ago +1

    The last dinosaurs are closer to us today in time scale, than Triassic and Permian creatures.
    Let that sink in.

  • Jascha Bull
    Jascha Bull  3 days ago

    So, by the sounds of it, tyrannosaurids were one space rock away from being the ancestors to single-headed, permanently-dynamaxed doduos with loads of razor sharp teeth.

  • ForestFairy1
    ForestFairy1  3 days ago

    Okay but here's my all burning question, would they taste like chicken? Also I wanna know how chickens are its closest living relative. Where is the evolutionary line did that make sense?

  • BonesyBucketPlays
    BonesyBucketPlays  7 days ago +1

    🌈🏳️‍🌈the more you know🏳️‍🌈🌈

  • DABBING Herobrian

    T rex arms actually helped it get up when it fell

  • Ryan English
    Ryan English  7 days ago

    How many times stronger is the bite force of a T-Rex compared to the Nile Alligator?

  • Andrew Blucher
    Andrew Blucher  7 days ago

    No, T.Rex didn't live in the United States. It only came to be called the United States a few hundred years ago. T.Rex had been dead for 66 million years by then.

  • Blob
    Blob  7 days ago

    I've also read that the smaller/ weaker the arms, the more powerful the jaw is. This is because it doesn't have to share muscle space.

  • TheGogeta222
    TheGogeta222  7 days ago

    If you're happy and you know it clap your... Ohh

  • Lord Sky Dragon
    Lord Sky Dragon  7 days ago

    T rex conjurers up an image of a blood thirsty creature but that needent be. T rex might have had a gentle side too. It could have been a caring parent. T rex might have used it's tiny forearms for building nests or for caring for young like feeding them or nursing their chicks but are there any fossil T rex nests with eggs and chicks? 🐲🐾

  • Jake Scotcher
    Jake Scotcher  7 days ago

    A t rex is basically a big angry chicken

  • NOOT NOOT
    NOOT NOOT  7 days ago

    I can't be the only one who thinks T red was a Tree Rex 😅 but fr why not be an ambush predator high up in a tree waiting for some herbivore.

  • Andre Ingram aka DJ Screw RIP

    Bold of you to assume that the T-Rex even had arms in the first place

  • Jtbomb
    Jtbomb  7 days ago +10

    Why can't a Trex clap it's hands?




    Because they're extinct