Vividen: Paleontology Evolved
Tyrannosaurs Were INSANE! Size, Phylogeny, & Physiology of the Tyrant Lizards
updated
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Ichthyotitan Description: 00:00
The Specimens: 00:51
Ichthyotitan Size: 02:18
Aust Colossus Size: 04:33
Histology Analysis: 05:05
Ecology Analysis: 06:48
The Hypothetical Maxima: 07:30
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00:00 Life Is Pain
01:05 Honorable Mentions
02:05 The Charlie Bit Me Tier
06:16 The Average Hockey Game Tier
11:54 The I Should Be Dead Tier
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Megatheropods in a Mammal-Dominated World 00:00
The Megatheropod Team 00:39
Paleocene 01:59
Eocene 04:05
Oligocene 06:28
Miocene 07:50
American Mastodon vs Tyrannosaurus 14:15
Pliocene 20:08
Pleistocene (includes Ice Age): 21:31
Humans vs Megatheropods 22:35
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The SV-POW post that prompted it all: svpow.com/2023/02/06/the-ludicrous-sizes-of-world-record-individuals
Wilson, I. & Wilson, B. 2024. The Megasauropods: Using Intraquarry Size Variation and Histological Analogs to Predict Maximum Sauropod Body Sizes. Utah Conference for Undergraduate Research 2024 Program. Utah Valley University.
Supplementary Information Link: drive.google.com/drive/u/0/folders/1zWYCsKBVNw6ljhdA_pWbCvD3_P2gG7-g
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nature.com/articles/s41598-023-47011-0#Fig1
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00:00 Introduction
00:24 What Was Saurophaganax?
02:51 Why Saurophaganax Is Not Allosaurus
04:50 Saurophaganax Ecology In The Morrison Formation
07:00 Was Saurophaganax A Pack Hunter?
08:00 Leviathan (The Jurassic's Biggest Theropod)
Saurophaganax maximus was the biggest theropod in the Jurassic Period, but remains relatively obscure despite being the biggest apex predator in North America besides Tyrannosaurus. New data indicates that not only was it a beast in the same league as the biggest megatheropods, but it was a sauropod-hunting grappler with powerful arms, claws, and other adaptations for taking down the giants of the Morrison Formation. This video analyzes Saurophaganax's life, ecology, and size in order to create the new authoritative guide to the animal. Saurophaganax may be a dark horse in the megatheropod race, but it might be bigger than popular giants like Carcharodontosaurus and Spinosaurus when it comes to the largest specimens of each species. Is Saurophaganax different from Allosaurus? Saurophaganax coexisted with other large predators like Torvosaurus and Allosaurus, and may have hunted huge sauropods like the Kenton Giants, Barosaurus, Brachiosaurus, Apatosaurus, and Diplodocus. Including the gigantic specimen Leviathan, Saurophaganax was the second-largest North American theropod, only behind Tyrannosaurus itself in terms of overall mass.
The source for the Saurophaganax specimens and measurements is DJ Sandy aka 7 Shots, who has been working with the animal for years and will be publishing a formal redescription soon. Measurements are not reproduced in this video in order to respect the Sam Noble Collection's social media guidelines.
Kenton Climate and Stratigraphy Analysis: https://www.journals.uchicago.edu/doi/10.1086/712368#rf128
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Ethan Meixsell: Thor’s Hammer
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Pal S. and Ayyasami K. 2022. The lost titan of Cauvery. Geology Today doi.org/10.1111/gto.12390
Paul, G.S. and Larramendi, A. 2023. Body mass estimate of Bruhathkayosaurus and other fragmentary sauropod remains suggest the largest land animals were about as big as the greatest whales. Lethaia 56:2 1-11. doi.org/10.18261/let.56.2.5
deviantart.com/paleonerd01/art/Probably-a-Tree-Bruhathkayosaurus-matleyi-762699678
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Could early humans and elephants take down giant predatory dinosaurs? Could dinosaurs survive in ancient mammal times? Could dinosaurs survive in the Ice Age? What would happen if dinosaurs returned? This video analyzes what would happen if some of the biggest theropod dinosaurs from Africa returned to each Cenozoic time period, including the Ice Age when early humans roamed the globe. Would the giant elephant relatives like Deinotherium be enough to stop the theropod dinosaurs? Would humans with Ice Age technology like spears prevent a new Age of Reptiles?
00:00 What If Giant Theropods Returned To Africa?
01:20 The Paleocene
02:28 The Eocene
05:20 The Oligocene
06:14 The Miocene
09:49 The Pliocene
11:50 The Pleistocene
13:23 Homo habilis
14:02 Homo erectus
16:17 Homo sapiens
Thumbnail art by Mauricio Anton and Fred Wierum.
SOURCES
Hansen, J.; Sato, M.; Russell, G.; Kharecha, P. (2013). "Climate sensitivity, sea level and atmospheric carbon dioxide". Philosophical Transactions of the Royal Society A. 371 (2001): 20120294
Anthony Romilio, Steven W. Salisbury & Andréas Jannel (2021) Footprints of large theropod dinosaurs in the Middle–UpperJurassic (lower Callovian–lower Tithonian) Walloon Coal Measures of southern Queensland, Australia, Historical Biology, 33:10, 2135-2146, DOI: 10.1080/08912963.2020.1772252
Jacobs et al. 2010. A Review of the Cenozoic Vegetation History of Africa. https://www.researchgate.net/publicat...
O’Brien et al. 2020 https://www.pnas.org/doi/10.1073/pnas...
Miocene temperature: Climate.gov https://www.climate.gov/news-features....
Pliocene temperature https://www.pnas.org/doi/10.1073/pnas...
Pterosaurs as part of a spinosaur’s diet nature.com/articles/430033a
Happy Boy End Theme by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/...
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Huge thanks to the following contributors:
Brian Curtice
Ray Wilhite
Dave Krause
Evan Johnson-Ransom
Kyle Atkins-Weltman
Matt Wedel
Jack Blackburn
Mike Taylor
Sauroniops in thumbnail by Paleonerd
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SOURCES
Horner et al. 2011 found that Triceratops made up 40% of the dinosaur fauna in Hell Creek. journals.plos.org/plosone/article?id=10.1371/journal.pone.0016574
First Triceratops bonebed
jstor.org/stable/20491089?seq=2
Tyrannosaurus feeding on a Triceratops pelvis, postmortem tandfonline.com/doi/abs/10.1080/02724634.1996.10011297
We know Tyrannosaurus actively hunted hadrosaurs
pnas.org/doi/10.1073/pnas.1216534110
Trikes likely used horns for intraspecific combat (Farke et al. 2009; D’Anastasio 2022)
journals.plos.org/plosone/article?id=10.1371/journal.pone.0004252
nature.com/articles/s41598-022-08033-2
Adapted for hearing low frequencies; not adapted for rapid posture stabilization or side-to-side head movement (Sakagami and Kawabe 2020)
ncbi.nlm.nih.gov/pmc/articles/PMC7505063
Likely a solitary animal with very rare group formations. Not known from bone beds like other ceratopsians
dinomuseum.ca/2019/01/a-day-in-the-life-of-triceratops#:~:text=The%20differences%20between%20the%20two,and%20a%20shorter%2C%20deeper%20snout.
Triceratops survived getting bitten on the horns by a T.rex
myfossil.org/featured-fossil-triceratops-vs-tyrannosaurus
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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.
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Eyes of Glory by Aakash Gandhi
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Thumbnail art by Mark Witton.
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Sues, Hans-Dieter & Averianov, Alexander & Britt, Brooks. (2022). A giant dromaeosaurid theropod from the Upper Cretaceous (Turonian) Bissekty Formation of Uzbekistan and the status of Ulughbegsaurus uzbekistanensis. Geological Magazine. 160. 1-6. 10.1017/S0016756822000954.
A new carcharodontosaurian theropod dinosaur occupies apex predator niche in the early Late Cretaceous of Uzbekistan
Kohei Tanaka, Otabek Ulugbek Ogli Anvarov, Darla K. Zelenitsky, Akhmadjon Shayakubovich Ahmedshaev and Yoshitsugu Kobayashi
Royal Society Open ScienceVolume 8, Issue 9
Published:08 September 2021
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SOURCES
Polar Bear: PNGImg
Giganotosaurus: Herschel-Hoffmeyer
Wallpaper: rmb8 wallpapers.com/background/all-black-background-vxqyzaac4tdb83gr.html
nwf.org/Educational-Resources/Wildlife-Guide/Mammals/Polar-Bear
reuters.com/lifestyle/science/bone-study-transforms-understanding-dinosaur-growth-2023-02-23
https://www.news.uct.ac.za/article/-2015-06-29-explainer-the-evolutionary-arms-race-between-bats-and-moths#:~:text=The%20interaction%20between%20bats%20and,such%20an%20evolutionary%20arms%20race.
academic.oup.com/bioscience/article/49/7/557/236798
cambridge.org/core/journals/the-paleontological-society-papers/article/abs/fossil-record-of-predatorprey-arms-races-coevolution-and-escalation-hypotheses/5967ADC32E5AA23E1A4731A9AC3B15F0
Rose, Peter J. (2007). "A new titanosauriform sauropod (Dinosauria: Saurischia) from the Early Cretaceous of central Texas and its phylogenetic relationships". Palaeontologia Electronica. 10 (2): 65pp. [published online]
Wedel, Matthew J.; Cifelli, Richard L.; Kent Sanders, R. (2000). "Sauroposeidon proteles, a new sauropod from the Early Cretaceous of Oklahoma" (PDF). Journal of Vertebrate Paleontology. 20 (1): 109–114. doi:10.1671/0272-4634(2000)020[0109:SPANSF]2.0.CO;2. S2CID 55987496
evolution-outreach.biomedcentral.com/articles/10.1007/s12052-009-0191-7
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Intro: 00:00
Smilodon populator: 02:39
Megatherium americanum: 05:19
Paraceratherium asiaticum: 08:20
Hyaenodon gigas: 10:12
Perucetus colossus: 11:52
Megaloceros giganteus: 13:59
Mammuthus columbi: 15:44
Livyatan melvillei: 17:29
Doedicurus clavicaudatus: 19:38
Daeodon shoshonensis: 21:40
Check out Ian Webster's Ancient Earth Globe here: dinosaurpictures.org/ancient-earth#240
Would giant mammals survive in dinosaur times? Would mammals survive in the Triassic Period? This paleontology video uses scientific studies to calculate the likelihood of success for ten Cenozoic mammal species in the Triassic Period. If you've ever wondered if a mammoth could beat dinosaurs, this video answers that paleontology question. Could a mammoth beat a T.rex? Could a Columbian mammoth survive in the Triassic Period? This series explores questions about how prehistoric mammals would do in the Mesozoic era. Mammals vs Dinosaurs covers the Triassic, Jurassic, and Cretaceous Periods.
Thumbnail Art:
Postosuchus art piece by kepyle2055
Smilodon populator by Charles Knight
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Check out the source papers here: docs.google.com/document/d/1rjhHXSSETLB5j9qDcDOg2S_ip7fhvTxJK0k8b53dhAg/edit?usp=sharing
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Art: Gabriel Ugueto; Hodaru Nundu; Julian Johnson-Mortimer; Rudolf Hima;
Darius Nau Shastasaurus: twitter.com/darius_nau/status/1688951203395252225?s=20
In 2020, Lomax stated that the animal the Aust bone belonged to would be at least thirty meters long. His coauthor, Paul de la Salle, clarified that to 35 meters in 2022.
2020 statement: cdn.discordapp.com/attachments/344675187750469642/1159195097817165865/image.png?ex=65302390&is=651dae90&hm=9683c9002eca92c9b910253684c90dd484227c0db0fa6cd189ab19a8a7945ea4&
2022 statement: cdn.discordapp.com/attachments/344675187750469642/1159195098106560533/image.png?ex=65302390&is=651dae90&hm=fd695b1d8446254d01e602006b133f3dfd902b8177769ba7a929311f0e548524&
Mega sauropods are the biggest dinosaurs ever by far. So out of the biggest sauropods ever, which mega sauropod claims the title of king? This ranking sorts giant sauropods by size and class within the Megakingdom, and Vividen explains the reasoning for each mass estimate. You may be surprised at the true winner in this contest of the largest sauropod dinosaurs.
Size Estimate Source Document: docs.google.com/spreadsheets/d/1XsHCd5EgNyyU6vhcvjFwa3520872REhOqqIOnPEpSMQ/edit?usp=sharing
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Eyes of Glory by Aakash Gandhi
The Battle of 1066 by Patrick Patrikios
How big were dinosaurs? Were they bigger than blue whales? The biggest dinosaur may have been Bruhathkayosaurus matleyi, a huge titanosaur from India, according to a new study by Gregory S. Paul and Asier Larramendi. The two paleontologists analyzed dinosaur size limits to find out the answer to the question: how big were dinosaurs? When it comes to the comparison of “Dinosaurs vs blue whale” and “Dinosaurs vs mammals,” it can go either way. Blue whales are often cited as the biggest animals ever, but with this recent discovery about giant sauropods like Bruhathkayosaurus and Amphicoelias (now Maraapunisaurus) that may not be true. Dinosaurs the size of a blue whale could be more common than previously thought, with multiple sauropod species weighing well over 100 tonnes. But was it really possible that there were dinosaurs the size of a blue whale? Find out here on The Vividen!
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Song: My Head Is Spinning Like A Screw (Lucky Luke Remix)
Copium rex video: youtube.com/watch?v=uOf4dWoMN7s&t=156s
Check out the study here: researchgate.net/publication/373708840_Dinosaur_eggs_with_fossilized_embryos_on_the_Moon
Check out the original Reddit conversation here: reddit.com/r/Dinosaurs/comments/15y0wu4/what_makes_me_feel_strange_is_that_no_one_here
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Atlantis by Audionautix is licensed under a Creative Commons Attribution 4.0 license. creativecommons.org/licenses/by/4.0
Campione, N.E., Evans, D.C., Brown, C.M. and Carrano, M.T. (2014), Body mass estimation in non-avian bipeds using a theoretical conversion to quadruped stylopodial proportions. Methods Ecol Evol, 5: 913-923. doi.org/10.1111/2041-210X.12226
Carr, T.D., Napoli, J.G., Brusatte, S.L. et al. Insufficient Evidence for Multiple Species of Tyrannosaurus in the Latest Cretaceous of North America: A Comment on “The Tyrant Lizard King, Queen and Emperor: Multiple Lines of Morphological and Stratigraphic Evidence Support Subtle Evolution and Probable Speciation Within the North American Genus Tyrannosaurus”. Evol Biol 49, 327–341 (2022). doi.org/10.1007/s11692-022-09573-1
Hurlburt, Grant. (1999). Hurlburt, G. R. 1999. Comparison of body mass estimation techniques, using recent reptiles and the pelycosaur Edaphosaurus boanerges. Journal of Vertebrate Paleontology 19 (2):338-350.. Journal of Vertebrate Paleontology. 19. 338-350.
Paul, G.S., Persons, W.S. & Van Raalte, J. The Tyrant Lizard King, Queen and Emperor: Multiple Lines of Morphological and Stratigraphic Evidence Support Subtle Evolution and Probable Speciation Within the North American Genus Tyrannosaurus. Evol Biol 49, 156–179 (2022). doi.org/10.1007/s11692-022-09561-5
Persons, W.S., IV, Currie, P.J. and Erickson, G.M. (2020), An Older and Exceptionally Large Adult Specimen of Tyrannosaurus rex. Anat Rec, 303: 656-672. doi.org/10.1002/ar.24118
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STUDIES CITED
Coria, R. A.; Currie, P. J. (2002). "The braincase of Giganotosaurus carolinii (Dinosauria: Theropoda) from the Upper Cretaceous of Argentina". Journal of Vertebrate Paleontology. 22 (4): 802–811. doi:10.1671/0272-4634(2002)022[0802:TBOGCD]2.0.CO;2. S2CID 85678725.
Giga brain researchgate.net/figure/Braincase-of-the-carcharodontosaurid-theropod-Giganotosaurus-carolinii-MUCPv-CH-1-Museo_fig1_340367784
Ankylosaurus mass Arbour, V.M.; Mallon, J.C. (2017). "Unusual cranial and postcranial anatomy in the archetypal ankylosaur Ankylosaurus magniventris". FACETS. 2 (2): 764–794. doi:10.1139/facets-2017-0063.
Tyrannosaur interfacial biting. Brown, C., Currie, P., & Therrien, F. (2022). Intraspecific facial bite marks in tyrannosaurids provide insight into sexual maturity and evolution of bird-like intersexual display. Paleobiology, 48(1), 12-43. doi:10.1017/pab.2021.29
Snively et al. 2019. ncbi.nlm.nih.gov/pmc/articles/PMC6387760
Triceratops size deviantart.com/spinoinwonderland/journal/Some-GDI-s-for-a-few-folks-648811067
Sellers et al. 2017 ncbi.nlm.nih.gov/pmc/articles/PMC5518979
Giganotosaurus braincase tandfonline.com/doi/abs/10.1671/0272-4634%282002%29022%5B0802%3ATBOGCD%5D2.0.CO%3B2
Therrien et al. 2020: cdnsciencepub.com/doi/abs/10.1139/cjes-2020-0177
Nieto & Paulina-Carabajal 2020: researchgate.net/figure/Braincase-of-the-carcharodontosaurid-theropod-Giganotosaurus-carolinii-MUCPv-CH-1-Museo_fig1_340367784
Dan Folkes blog thecodontia.com/blog/the-largest-theropod-dinosaur-known-to-science
Thumbnail Art
Giganotosaurus: Gabriel Ugueto
Tyrannosaurus: Mark Witton
Human: Linda Salzman Sagan
South America Map: Simoes et al. 2017
North America Map: Dr. Ron Blakely
Intro Sound Effect by GatorBeast youtube.com/watch?v=h8QkzD4iVco
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All other music by Pixabay
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Tyrannosaurus rex vs Giganotosaurus: Battle of Kings Video: youtube.com/watch?v=AzLlH08gl7o
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IMAGE CREDITS AND STUDY SOURCES
1. Herschel-Hoffmeyer
2. Ashley Morhardt; earthtouchnews.com/discoveries/fossils/theres-a-lot-to-learn-about-dinosaur-brains
3. Mark Witton; Herculano-Houzel 2023 phys.org/news/2023-01-phylogenetic-bracketing-dinosaurs-neuron-density.html
4. Damir G Martin; Stevens, K.A. 2006 Binocular vision in theropod dinosaurs. Journal of Vertebrate Paleontology 26(2):321-330.
5. National Geographic; Sakamoto et al. 2022 ncbi.nlm.nih.gov/pmc/articles/PMC9285543
6. RJ Palmer: Snively et al. 2019 ncbi.nlm.nih.gov/pmc/articles/PMC6387760
Fair use allows individuals to use a copyrighted work without obtaining permission when the use is considered commentary, criticism, teaching, news reporting, scholarship, or research.
Thumbnail Anchiornis art by Matt Martyniuk.
Thumbnail Yi qi by Rebecca Groom.
Thumbnail Mahakala by Sauriazoicillus.
Fair use allows individuals to use a copyrighted work without obtaining permission when the use is considered commentary, criticism, teaching, news reporting, scholarship, or research.
Disclaimer: This video only addresses the original Bianucci et al. 2023 study, not any third-party responses or extra reconstructions made in response to the paper. Those will be addressed in a separate video.
Bianucci et al 2023: A heavyweight early whale pushes the boundaries of vertebrate morphology. nature.com/articles/s41586-023-06381-1
Article summary: nature.com/articles/d41586-023-02408-9.epdf?no_publisher_access=1&r3_referer=nature
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Paul & Larramendi 2023: https://www.idunn.no/doi/10.18261/let.56.2.5
Pal & Ayyasami 2022: onlinelibrary.wiley.com/doi/abs/10.1111/gto.12390
Bruhathkayosaurus art in thumbnail by Ansh Saxena
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00:00 Intro
02:11 Shonisaurus Predatory Behavior
06:45 Temnodontosaurus
11:04 Himalayasaurus tibetensis
12:50 The Swiss Tyrant
18:40 Macropredatory Behavior in Ichthyosaurs
21:19 Giant Ichthyosaur Combat Strategies
23:58 Cymbospondylus youngorum
26:01 Shonisaurus, Lilstock Monster, and Aust Colossus
31:27 Other Giant Fragmentary Ichthyosaurs
32:45 Marine Reptile Cinematic Universe
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Prehistoric Planet
Fred Wierum
RJ Palmer
Mark Witton
Herschel-Hoffmeyer
#tyrannosaurusrex #paleontology #dinosaurs #dinofacts
#science #evolution #paleoart
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The idea that Spinosaurus and Tyrannosaurus both hunted in water may be a strange one, but ecological modeling and morphology based on biophysics seems to indicate that it may have happened.
All artists with material in this video are referenced within the video itself. If a piece of art has been misidentified, please let me know.
Fabbri et al. 2022: pubmed.ncbi.nlm.nih.gov/35322229
Myrhvold et al. 2023 Preprint: biorxiv.org/content/10.1101/2023.05.04.539484v1.full.pdf
Blanco 2023: academic.oup.com/zoolinnean/article/198/1/202/7153107
If all theropods formed the ranks of a military, then these are the officers, the generals, the supreme commanders. There are a few definitions floating around the internet about what exactly a megatheropod is, so here’s a modified version of mine from 2017. A megatheropod is any theropod dinosaur that consistently attains an average adult mass of 5000 kilograms or higher. This definition is more exclusionary than my old video, and that’s because while researching this I put an emphasis on consistency and utilizing multiple mass estimates per species from different sources, which I’ve linked here.
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00:00: What Is A Megatheropod?
00:58: The Tier List
01:31: The Cimmerian Giant
01:53: Saurophaganax
02:27: Edmarka rex
02:51: NHMG 8500
03:23: Oxalaia quilombensis
03:42: Acrocanthosaurus atokensis
04:12: Deinocheirus mirificus
04:48: Therizinosaurus cheloniformis
05:12: Megalosaurus/Torvosaurus ingens
05:37: Carcharodontosaurus saharicus
06:07: The South African Titan
06:33: Tyrannotitan
07:08: Mapusaurus roseae
07:32: Spinosaurinae indet.
07:52: Spinosaurus aegyptiacus
08:27: The Destroyer Tier
08:37: Giganotosaurus carolinii
09:28: Tyrannosaurus rex
Megatheropod Data 2023: docs.google.com/spreadsheets/d/1okCeHS0CvNmnKjkeJn28LOvZJAYzRUJadv_LumuzAwM/edit?usp=sharing
Megatheropod Sources 2023:
docs.google.com/presentation/d/11k6OKunxG_PmgFLcCKNO3bBeWv0DTbpwij9FzpxPfwc/edit#slide=id.p
Tyrannotitan Image Source: Brett Booth
Acrocanthosaurus Image Source: Apsaravis
Acrocanthosaurus Hook Claw Study: Senter, Phil; Robins, James H. (2005). "Range of motion in the forelimb of the theropod dinosaur Acrocanthosaurus atokensis, and implications for predatory behaviour". Journal of Zoology. 266 (3): 307–318. doi:10.1017/S0952836905006989.
Average Bull African Bush Elephant Mass Source: academic.oup.com/mspecies/article/doi/10.2307/3503889/2600894?login=true
Black Vortex - Scoring Action by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. creativecommons.org/licenses/by/4.0
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Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for 'fair use' for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use'
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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. 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. 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). doi.org/10.1038/s42003-023-04513-x
(7) (PDF) Limb-Bone Scaling Indicates Diverse Stance and Gait in Quadrupedal Ornithischian Dinosaurs. Available from: researchgate.net/publication/225187224_Limb-Bone_Scaling_Indicates_Diverse_Stance_and_Gait_in_Quadrupedal_Ornithischian_Dinosaurs [accessed Feb 15 2023].
CHAPTERS
00:00 Introduction
00:16 SENSES
01:37 SIZE
02:50 BITE FORCE
03:27 SPEED AND AGILITY
04:38 INTELLIGENCE
05:49 CONCLUSION
WORKS CITED
Bates KT, Falkingham PL. Estimating maximum bite performance in Tyrannosaurus rex using multi-body dynamics. Biol Lett. 2012 Aug 23;8(4):660-4. doi: 10.1098/rsbl.2012.0056.
Gignac, P.M., Erickson, G.M. The Biomechanics Behind Extreme Osteophagy in Tyrannosaurus rex . Sci Rep 7, 2012 (2017). doi.org/10.1038/s41598-017-02161-w
Herculano-Houzel, S. (2022). Theropod dinosaurs had primate-like numbers of telencephalic neurons. Journal of Comparative Neurology, 00, 1– 13. doi.org/10.1002/cne.25453
Hughes, G.M., and Finarelli, J.A. Olfactory receptor repertoire size in dinosaurs. 2019. Proceedings of the Royal Society B 286: 20190909. doi.org/10.1098/rspb.2019.0909
Kverkova et al. 2022. The evolution of brain neuron numbers in amniotes. Proceedings of the National Academy of Sciences. 119 (11): e2121624119. doi:10.1073/pnas.2121624119
Sellers et al. 2017. Investigating the running abilities of Tyrannosaurus rex using stress-constrained multibody dynamic analysis. PeerJ. 18;5:e3420. doi: 10.7717/peerj.3420.
Snively E, O'Brien H, Henderson DM, Mallison H, Surring LA, Burns ME, Holtz TR Jr, Russell AP, Witmer LM, Currie PJ, Hartman SA, Cotton JR. Lower rotational inertia and larger leg muscles indicate more rapid turns in tyrannosaurids than in other large theropods. PeerJ. 2019 Feb 21;7:e6432. doi: 10.7717/peerj.6432.
Stevens, Kent. (2006). Binocular vision in theropod dinosaurs. Journal of Vertebrate Paleontology - J VERTEBRATE PALEONTOL. 26. 10.1671/0272-4634(2006)26[321:BVITD]2.0.CO;2.
Witmer, L.M. and Ridgley, R.C. 2009. New Insights Into the Brain, Braincase, and Ear Region of Tyrannosaurs (Dinosauria, Theropoda) with Implications for Sensory Organization and Behavior. The Anatomical Record 292: 1266-1296. doi.org/10.1002/ar.20983
Randomdinos Scotty GDI. deviantart.com/randomdinos/art/Tyrannosaurus-rex-skeletal-reconstructions-759469239
Scott Hartman Sue GDI. skeletaldrawing.com/home/mass-estimates-north-vs-south-redux772013
Franoys Sue GDI. deviantart.com/franoys/art/Tyrannosaurus-rex-skeletal-diagram-FMNH-PR-2081-640670460
Polar Bear Size. polarguidebook.com/how-big-is-a-polar-bear
Chito and Pocho npr.org/2014/02/28/283934611/chito-and-pocho
Mallon and Hone 2022. allthatsinteresting.com/t-rex-true-size
Turkey Vultures Smell smithsonianmag.com/smithsonian-institution/turkey-vultures-have-keen-sense-smell-and-now-we-know-why-180967599
Tyrannosaurus Color Vision blog.nms.ac.uk/2020/03/04/tyrannosaurus-rex-was-no-senseless-killer
Human Running Speed marathonhandbook.com/how-fast-can-the-average-human-run
Vecteezy background www.vecteezy.com/free-vector/sci-fi-background Sci Fi Background Vectors by Vecteezy
Dinosaur intelligence is a constantly shifting science, but a technique known as isotropic fractionation may hold the key to unlocking the secrets of ancient dinosaur brains. Suzana Herculano-Houzel investigated dinosaur neuron density and discovered that some theropods may have been as intelligent as primates and modern corvids, suggesting complex problem-solving, tool use, and culture building even in the world's largest terrestrial predators.
Links to studies:
Herculano-Houzel 2023: onlinelibrary.wiley.com/doi/epdf/10.1002/cne.25453
Herculano-Houzel and Lent 2005:
jneurosci.org/content/25/10/2518
Capuchin Intelligence: link.springer.com/chapter/10.1007/978-4-431-75179-3_1
Kverkova et al 2022: pnas.org/doi/10.1073/pnas.2121624119
Rogers 1998: sciencedirect.com/science/article/pii/S0896627300805851
Image Background: www.vecteezy.com/free-vector/sci-fi-background"
00:00:00 Introduction
00:00:36 UNWORTHY THOR
00:03:53 BASE THOR
00:07:06 BASE THOR SPEED
00:10:03 ODINFORCE THOR
00:11:38 RUNE KING THOR
00:13:34 SECRET FORM THOR
00:14:33 COSMIC KING THOR
Please like and leave a comment below with your thoughts. Do you agree with Thor's power level? Do you think he's stronger or weaker? Let us know!
Link to speed calculations: character-stats-and-profiles.fandom.com/wiki/User_blog:GoldenMaster7/MFTL%2B_Thor%27s_feats
Link to "shaking the universe" calc: vsbattles.fandom.com/wiki/User_blog:Kulf_Boba/Energy_needed_to_shake_planets_at_the_edge_of_the_universe
The Beyonders Theory of Those Who Sit Above In Shadow EXPLAINED: topstrongest.fandom.com/wiki/User_blog:Alonik/Thor,_TWSAIS_and_Yggdrasil_Page_Explanation#Rune_King_Thor_and_TSWAIS
Giganotosaurus never lived in the same time or place as T.rex, but was depicted battling a T.rex in the prologue to Jurassic World: Dominion. The Giganotosaurus in the video was extremely large. Was that gigantic theropod realistically depicted? Morphology and anachronism aside, here we explore the potential of a Giganotosaurus actually growing to such a massive size. Based on genomic studies done by Romanov et al (2014), the domestic chicken is the closest living relative to nonavian dinosaurs. That makes it the best comparison for population dynamic studies. If we treat the Giganotosaurus population as having similar extremes as those of chickens, we arrive at an individual that weighed over ten metric tons.
Fair use principles in U.S. copyright laws support the implementation of copyrighted material with educational, parodic, or transformative intent. The usage of any copyrighted material in this video is for noncommercial educational purposes, and is asserted permissible under the aforementioned copyright rulings.
REFERENCES
Folkes, Dan. Giganotosaurus carolinii (2021). twitter.com/DanPalaeon1/status/1465371994032156675/photo/1. Accessed December 2021.
Franoys. A mathematical analysis on Giganotosaurus mass (2017). deviantart.com/franoys/journal/A-mathematical-analysis-on-Giganotosaurus-mass-659861738. Accessed December 2021.
Larramendi, A., Paul, G.S., Hsu, S. A review and reappraisal of the specific gravities of present and past multicellular organisms, with an emphasis on tetrapods. Anat Rec. 2021; 304: 1833– 1888. doi.org/10.1002/ar.24574
Romanov, M.N., Farré, M., Lithgow, P.E. et al. Reconstruction of gross avian genome structure, organization and evolution suggests that the chicken lineage most closely resembles the dinosaur avian ancestor. BMC Genomics 15, 1060 (2014). doi.org/10.1186/1471-2164-15-1060


