Uploaded June 2024 | Updated September 2026, 2 weeks ago
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Hector's Ichthyosaur speculative reconstruction by Diocles305 https://x.com/Diocles305
Music by Unicorn Heads.
Thumbnail art by Mario Lanzas/Rudolf Hima.
The Mesozoic was terrifying, and ichthyosaurs were one of the biggest reasons why.
Ichthyosaurs are what happened when evolution took the blueprints for an orca, an eel, and a lizard and put them in the blender. Predatory marine reptiles that spanned nearly the entire Mesozoic, ichthyosaurs were incredibly diverse and successful, and may have been even older than we thought. A brand-new study reports large-bodied ichthyosaurs from only two million years after the end-Permian extinction, implying that ichthyosaurs likely evolved in the Permian and developed large sizes very quickly. Growing huge was far from their only talent, however. This video will focus on the mega ichthyosaurs that dominated the Triassic and early Jurassic, looking at their physical adaptations, ecology, and what we know about their lives. There’s also some juicy unpublished info I’ve gotten permission to share. For the sake of the video, I’ll define a “mega ichthyosaur” as any ichthyosaur that reached a maximum body mass of 15 tonnes or more. And for any documentary producers watching this: please highlight the Triassic more.
Secure your privacy with Surfshark! Enter coupon code VIVIDEN for an extra 4 months free at https://surfshark.deals/vividen
Receive free short stories by signing up here: https://forms.gle/GGGFqMfn1AgMZJaF9
Hector's Ichthyosaur speculative reconstruction by Diocles305 https://x.com/Diocles305
Music by Unicorn Heads.
Thumbnail art by Mario Lanzas/Rudolf Hima.
The Mesozoic was terrifying, and ichthyosaurs were one of the biggest reasons why.
Ichthyosaurs are what happened when evolution took the blueprints for an orca, an eel, and a lizard and put them in the blender. Predatory marine reptiles that spanned nearly the entire Mesozoic, ichthyosaurs were incredibly diverse and successful, and may have been even older than we thought. A brand-new study reports large-bodied ichthyosaurs from only two million years after the end-Permian extinction, implying that ichthyosaurs likely evolved in the Permian and developed large sizes very quickly. Growing huge was far from their only talent, however. This video will focus on the mega ichthyosaurs that dominated the Triassic and early Jurassic, looking at their physical adaptations, ecology, and what we know about their lives. There’s also some juicy unpublished info I’ve gotten permission to share. For the sake of the video, I’ll define a “mega ichthyosaur” as any ichthyosaur that reached a maximum body mass of 15 tonnes or more. And for any documentary producers watching this: please highlight the Triassic more.
![Acrocanthosaurus Appreciation Day
Acrocanthosaurus atokensis is a gigantic carcharodontosaurid theropod from the Early Cretaceous of North America. It was nearly as big as famous giants like Mapusaurus and Giganotosaurus, but is underrated in paleontology culture. Lets explore what makes Acrocanthosaurus such an awesome dinosaur.
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.
Acrocanthosaurus art sources
https://www.deviantart.com/franoys/art/Giant-predatory-dinosaurs-comparison-616409616
https://www.deviantart.com/highdarktemplar/art/Acrocanthosaurus-atokensis-513380108
https://www.deviantart.com/paleocolour/art/Acrocanthosaurus-atokensis-582244717
https://www.deviantart.com/paleoguy/art/Acrocanthosaurus-with-Tenontosaurus-594282699
https://fineartamerica.com/featured/acrocanthosaurus-julius-csotonyi.html?product=art-print
https://www.deviantart.com/manuelsaurus/art/Acrocanthosaurus-626426008
https://www.ebay.com/itm/Latest-Dinosaurs-Acrocanthosaurus-Tenontosaurus-carcass-model-12-Free-Shipping-/263469895675
https://www.pinterest.com/pin/737464507704070456/?lp=true
https://www.worldwildlife.org/species/elephant
http://planetdi.startlogic.com/club/large_carnivores/acrocanthosaurus.htm
http://www.bhigr.com/store/product.php?productid=64
https://www.deviantart.com/highdarktemplar/art/Acrocanthosaurus-atokensis-513380108
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.
DEmic, Michael D.; Melstrom, Keegan M.; Eddy, Drew R. (2012). Paleobiology and geographic range of the large-bodied Cretaceous theropod dinosaur Acrocanthosaurus atokensis. Palaeogeography, Palaeoclimatology, Palaeoecology. 333–334: 13–23. doi:10.1016/j.palaeo.2012.03.003.
Franzosa, Jonathan; Rowe, Timothy. (2005). Cranial endocast of the Cretaceous theropod dinosaur Acrocanthosaurus atokensis. Journal of Vertebrate Paleontology. 25 (4): 859–864. doi:10.1671/0272-4634(2005)025[0859:CEOTCT]2.0.CO;2.
https://www.researchgate.net/figure/Digital-endocranial-endocast-of-the-braincase-of_fig32_50892373 Acrocanthosaurus Appreciation Day](https://i.ytimg.com/vi/NMFn-vL03vg/mqdefault.jpg)









