Uploaded October 2023 | Updated September 2026, 2 weeks ago
The true size of Tyrannosaurus rex is hotly debated. Tyrannosaurus rex is the megatheropod with the largest sample size, which may lead to finding the biggest specimens. The gigantic Tyrannosaurus rex specimen E.D. Cope, “Copium rex,” may be the biggest Tyrannosaurus rex specimen yet described in the literature. This video takes measurements from paleontologists and uses them to calculate how big was the biggest Tyrannosaurus. E.D. Cope was likely bigger than Scotty, Sue, Trix, and almost any other theropod. With new estimates placing it at approximately 1500 kilograms heavier than even the dentary Giganotosaurus specimen.
Thumbnail art by Ivano Borghi/Heitoresco.
A special acknowledgement goes to Ivano Borghi for creating the fantastic 3D models of Cope featured in this video. Check out his ArtStation here: artstation.com/infestedivy
Thanks also goes to Peter Larson, Scott Hartman, and Asier Larramendi for providing their various perspectives on Cope’s measurements and overall size.
Music from #Uppbeat (free for Creators!):
https://uppbeat.io/t/little-planet/vo...
License code: TMIC8K7OX88JVMG4
Eyes of Glory by Aakash Gandhi
Join this channel to get access to perks:
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The true size of Tyrannosaurus rex is hotly debated. Tyrannosaurus rex is the megatheropod with the largest sample size, which may lead to finding the biggest specimens. The gigantic Tyrannosaurus rex specimen E.D. Cope, “Copium rex,” may be the biggest Tyrannosaurus rex specimen yet described in the literature. This video takes measurements from paleontologists and uses them to calculate how big was the biggest Tyrannosaurus. E.D. Cope was likely bigger than Scotty, Sue, Trix, and almost any other theropod. With new estimates placing it at approximately 1500 kilograms heavier than even the dentary Giganotosaurus specimen.
Thumbnail art by Ivano Borghi/Heitoresco.
A special acknowledgement goes to Ivano Borghi for creating the fantastic 3D models of Cope featured in this video. Check out his ArtStation here: artstation.com/infestedivy
Thanks also goes to Peter Larson, Scott Hartman, and Asier Larramendi for providing their various perspectives on Cope’s measurements and overall size.
Music from #Uppbeat (free for Creators!):
https://uppbeat.io/t/little-planet/vo...
License code: TMIC8K7OX88JVMG4
Eyes of Glory by Aakash Gandhi
Join this channel to get access to perks:
youtube.com/channel/UCmkkmzfWWf4HzrO8SGO3gjw/join



![Paleontology News: Dinosaurs Sounded Like Birds! Advanced Dinosaur Larynx Discovered
A specimen of Pinacosaurus has revolutionized the way paleontologists think about how dinosaurs sounded and communicated. 3-D laser scanning revealed a complex, advanced larynx inside of the ankylosaurs hyobranchial apparatus, revealing that they were likely able to produce birdlike sounds. Since ankylosaurs are so distantly related to birds, this may mean that other dinosaurs, like T.rex and Spinosaurus, were able to do the same. This study lends credence to the idea that some dinosaurs were able to develop biological culture, as complex communication strategies would make it easier for individuals to cooperate and develop mutually-beneficial intraspecific relationships.
Check out Skyman paleoart here! https://www.redbubble.com/people/SkymanPaleo/shop
Dhiman H, Verma V, Singh LR, Miglani V, Jha DK, Sanyal P, et al. (2023) New Late Cretaceous titanosaur sauropod dinosaur egg clutches from lower Narmada valley, India: Palaeobiology and taphonomy. PLoS ONE 18(1): e0278242. https://doi.org/10.1371/journal.pone.0278242
Herculano-Houzel, S. (2022). Theropod dinosaurs had primate-like numbers of telencephalic neurons. Journal of Comparative Neurology, 00, 1– 13. https://doi.org/10.1002/cne.25453
Maidment SCR, Linton DH, Upchurch P, Barrett PM (2012) Limb-Bone Scaling Indicates Diverse Stance and Gait in Quadrupedal Ornithischian
Dinosaurs. PLoS ONE 7(5): e36904. doi:10.1371/journal.pone.0036904
Yoshida, J., Kobayashi, Y. & Norell, M.A. An ankylosaur larynx provides insights for bird-like vocalization in non-avian dinosaurs. Commun Biol 6, 152 (2023). https://doi.org/10.1038/s42003-023-04513-x
(7) (PDF) Limb-Bone Scaling Indicates Diverse Stance and Gait in Quadrupedal Ornithischian Dinosaurs. Available from: https://www.researchgate.net/publication/225187224_Limb-Bone_Scaling_Indicates_Diverse_Stance_and_Gait_in_Quadrupedal_Ornithischian_Dinosaurs [accessed Feb 15 2023]. Paleontology News: Dinosaurs Sounded Like Birds! Advanced Dinosaur Larynx Discovered](https://i.ytimg.com/vi/RmgjJpyXdyk/mqdefault.jpg)






