REFERENCES Testing Clovis spears on elephants www.jstor.org/stable/280681 How dangerous grizzlies were to pre-gun cultures hughglass.org/grizzly-in-1800s/ Clovis mammoth kill site count www.sciencedirect.com/science/article/abs/pii/S1040618207003771?via%3Dihub Size of the American Lion www.tandfonline.com/doi/abs/10.1671/039.029.0314 20,000 year old human footprints news.berkeley.edu/2023/10/05/tests-confirm-humans-tramped-around-north-america-more-than-20-000-years-ago Ideal migration pathways around.uoregon.edu/content/new-data-suggests-timeline-arrival-first-americans Cooper’s Ferry archaeological site may be older than Clovis www.science.org/content/article/first-people-americas-came-sea-ancient-tools-unearthed-idaho-river-suggest North American agriculture esajournals.onlinelibrary.wiley.com/doi/full/10.1890/ES10-00098.1 Larramendi 2015 www.app.pan.pl/archive/published/app61/app001362014.pdf Hwange National Park lion pride specializes in killing elephants www.researchgate.net/figure/Age-class-distribution-of-elephants-observed-being-killed-by-lions-from-1993-to-1996_fig1_232693088 Elephant matriarchs will charge lions even if the lions aren’t attacking kzitem.info/news/bejne/tKuhnqNmepx5gIY Elephants become depressed if relatives die books.google.com/books?id=7JIAt-yfIJgC&pg=PA72#v=onepage&q&f=false Information about elephants in musth www.elephantvoices.org/elephant-ethogram/ethogram-table/behavior?id=159 Elephant tusk durability kzitem.info/news/bejne/q6KHs6asm6Zya6Q Elephant skull structure is light and honeycombed knysnaelephantpark.co.za/skeleton-skull/ Bulls fighting may break their tusks www.pbs.org/edens/etosha/elephant.htm#:~:text=When%20competing%20for%20mates%2C%20male,tusks%20than%20their%20calmer%20counterparts Bulls fighting kzitem.info/news/bejne/k453mZidg5tzh2U Bulls fighting more kzitem.info/news/bejne/rKaEk4RniIirn2k Lions hunting elephants kzitem.info/news/bejne/k6KLnnyZsXtyqm0 kzitem.info/news/bejne/2WqkrWiArHOqfo4 kzitem.info/news/bejne/sHdmroWtiqJ0dag blog.londolozi.com/2020/03/30/how-do-elephants-respond-to-leopards-and-lions/ Tyrannosaurus bite force peerj.com/articles/13731/ Tyrannosaurus biting Triceratops facial horns www.myfossil.org/featured-fossil-triceratops-vs-tyrannosaurus Elephant birth rate spana.org/blog/elephant-pregnancy-facts/#:~:text=Elephants%20give%20birth%20around%20every,five%20babies%20during%20their%20lives Elephant agility demonstration kzitem.infoVdL8FtN_Lao Teratophoneus gregariousness peerj.com/articles/11013/ Canadian tyrannosaur trackways www.theguardian.com/science/2014/jul/23/tyrannosaurs-hunted-packs-tracks-canada Giant ground sloth body size link.springer.com/article/10.1007/s10021-005-0076-8 Egg stealers during the time of the dinosaurs www.smithsonianmag.com/science-nature/scrambled-eggs-and-the-demise-of-the-dinosaurs-85969406/ Mammals weren’t outcompeting dinosaurs www.nature.com/articles/ncomms1815 Success of crocodilians despite mammalian interference www.researchgate.net/publication/259450979_The_Role_of_Predation_in_Shaping_Crocodilian_Natural_History Nest guarding is likely a basal archosaurian trait defenders.org/wildlife/american-crocodile-and-alligator#:~:text=Roughly%201.25%20million%20alligators%20live,females%20will%20defend%20prime%20territory Collaborative hunting by crocodilians www.researchgate.net/publication/272369202_Apparent_coordination_and_collaboration_in_cooperatively_hunting_crocodilians Paleocene temperature www.scotese.com/paleocen.htm Paleocene environment www.pbs.org/wgbh/evolution/change/deeptime/cenozo.html#:~:text=Ferns%2C%20horsetails%2C%20and%20shrubby%20flowering,America%2C%20Africa%2C%20and%20Australia. Eocene environment cdnsciencepub.com/doi/10.1139/cjes-2016-0043#:~:text=The%20Eocene%20Epoch%20is%20well,as%20well%20as%20to%20climatologists Eocene environment ucmp.berkeley.edu/tertiary/eocene.php Oligocene environment www.pnas.org/doi/10.1073/pnas.2003914117#:~:text=Oligocene%20GMSTs%20were%20%E2%88%BC22,42%2C%2069 Oligocene environment ucmp.berkeley.edu/tertiary/oligocene.php Oligocene ice sheets www.nature.com/articles/s41561-022-01025-x Miocene temperature bolin.su.se/data/miocene-temperature-portal Miocene environment chooser.crossref.org/?doi=10.2307%2F3515337 Miocene migration of muroids to North America academic.oup.com/sysbio/article/62/6/837/1710000?login=false Pliocene temperature www.nature.com/articles/s41598-020-67154-8#:~:text=The%20Pliocene%20Epoch%20(2.588%20to,and%20Antarctic%20ice%20sheets2. Pleistocene extinctions and environment www.nature.com/articles/s41467-020-16502-3 Hell Creek temperature www.researchgate.net/publication/279980306_A_florule_from_the_base_of_the_Hell_Creek_Formation_in_the_type_area_of_eastern_Montana_Implications_for_vegetation_and_climate
@PREHISTORIC.PRESIDENT.
6 ай бұрын
There’s a new 3d study that puts trex bite at “18,000 21,000”psi and T. rex average Weight estimates 10tons-and kg and tons are different just to let you know love the vids❤
@landenriley8442
6 ай бұрын
I think Carcharadontosauroids like Gigantosaurus would go for the lone male rather than the whole herd
@tyrannotherium7873
6 ай бұрын
Actually, it’s implying that American lions are lions after all
@Ratchetcomand
6 ай бұрын
I wish you had Dilophosaurus to the roster in the video
@ЕрсултанСапаргали-ц3ь
6 ай бұрын
Hey,you can make video about theoretical maximum height from ground to head for tallest sauropods including Sauroposeidon
@HolyCanolei
6 ай бұрын
I googled it, and apparently a group of tyrannosaurs is called a “terror”, which I think is solid.
@ottovonbismarck7646
5 ай бұрын
I mean... I would be in a pure state of terror if I saw a group of some of the most proficient killers nature could possibly make...
@MegaMark0000
5 ай бұрын
cool. How do they come up with those names anyway? Pod of whales, murder of crows, pack of wolves etc...
@roboticartist2793
5 ай бұрын
@MegaMark0000 they go for whatever feels right
@Stefmovie
5 ай бұрын
@@ottovonbismarck7646 Nah, I'd win
@momsberettas9576
4 ай бұрын
I think it should be called an apocalypse. XD
@TimothyLau-l8x
5 ай бұрын
The amount of research/ theorising this man has done just to make my childish brain giggle about T-Rex vs Mammoth… Anyways love the video, keep going man.
@adamtruong1759
2 ай бұрын
It's lines like "pack a firepower of 40 lions into a single animal, and you have Sue!" that truly puts into perspective how large these predators were for me. Also, I was worried for a moment that the therapod team would've needed Nanuqsaurus to carry them. However, this does show how adaptable these animals were.
@marclavecc3381
6 ай бұрын
What a spectacular video!
@TheVividen
6 ай бұрын
Thank you!
@CloroxThePotatoPriest
Ай бұрын
I'm suddenly finding all these quality paleontology and speculative biology channels and these the funnest stuff ever!
@tamaltarudey8912
6 ай бұрын
A tyranny of Tyrannosaurs
@TheVividen
6 ай бұрын
Oooh that's a nice one
@ash_art6648
2 ай бұрын
i love the rex sisters ideas sm I hope they make the rex scary again not malicious and out right evil but for example chancing down cars like how orcas take down boats for fun and playing tug of war with people they catch it would be interesting if they gave the rexs different ways of attacking the smaller is faster and chases prey to the bigger brawler one
@rileyernst9086
2 ай бұрын
I think the mammoth problem is far from a problem. Elephants being able to effectively defend themselves means that they can maintain a viable population with the occasional individual dying, but not threatening population numbers. I believe that it means that the two groups, therapods and elephants might coexist more effectively, than say the more basal rhino like creatures, which maybe eaten faster than they can reproduce.
@thenerdbeast7375
6 ай бұрын
The official name for a group of T.rex is a Terror, a Terror of Tyrannosaurs.
@germanscience7246
4 ай бұрын
I wonder if people arriving in north america would utilize similar tactics against the theropods that they used against mammoths like spike pits or just strsight up dropping a large rock on their back
@myleswelnetz6700
3 ай бұрын
19:40 Or Goji Center’s Tyrannosaurus rex vs. Palaeoloxodon namadicus video, one of my personal favorite videos on that channel.
@josephroberts5243
6 ай бұрын
A group of megatheropods is officially a ‘nightmare’ now
@RosalinaDeAnda
6 ай бұрын
Amazing, you did amazing witn this video. Dinosaurs in the Cenezoic is a hot topic of debate that people should look at more. You did an amazing job giving all the information and evidence in a very good manner. I personally think the Theropod Dinosaurs can survive in the Cenezoic but there will be challenges like: Proboscideans, humans, and smaller creatures. Amazing job I can't wait to we what other Paleontology videos you will make.
@James-od4cz
6 ай бұрын
Bravo, a truly captivating watch.
@justjoshua5759
6 ай бұрын
Pretty crazy to imagine how these animals were this adaptable as you get the impression that even mid size aggro predators like ceratosaurus were simply too large and had reproductive cycles too slow in the cold. But it’s pretty damn impressive especially considering the mass extinction element humans present of which other animals simply wouldn’t be able to exist with. Yeah I know they didn’t make it past the Holocene but still very impressive compared to the cenzoic counterparts. Another excellent and epic series edition vividen👏🏾👏🏾 Btw that lion story with the elephants is crazy. Like those African bull kalahari super lions.
@markusbelden4569
13 күн бұрын
Scotty the T-Rex: HEYO MAMMALS, I'M BACK!!!! Smilodons: OH SHIT!!!!!!!! Arctodus: Hey your the same size as Me WTF?!!
@ztk1138
6 ай бұрын
Could the north American ice age megafana survives in a modern north America?
@godhimself478
6 ай бұрын
Yes and no, yes in climate/ weather tue main problem is us kinda living there.
@loowick4074
6 ай бұрын
America still has alot of wild area especially Canada and many parts of US where alot of undeveloped land still exists. That's enough space for mammoths. If elephants can live in India, mammoths should thrive in modern north america.
@samuelruakere7728
11 күн бұрын
As the Theropods grew in size I imagine mane mammals would have also gained sizes, like Mammoth's would have a few species as large as Palaeolxodon Namadicus and other mammals would do the same such as bovids and cervids
@tomcross3000
2 ай бұрын
What's interesting and perhaps tactical on your part, is you don't include any "sauropod killers" from the cretaceous including the massive carcharodontosaurs. Allows for more of a struggle with both sides. My opening thoughts are that based on the fossils and general impressions all from the observation of locomotion, osteology, kinesiology and not just broad viewing of biology or ecology, or looking at media depictions.. Tyrannosaurus and Allosaurus are the only ones with any possibility of translating to the ice age. You could possibly include Daspletosaurus there too which did prove able to live in colder climates. All others- off you go. And that's because Allosaurus had strategy, adaptability, heartiness and a presence all through europe and america, possibly asia. The fossils show the determination, grit and resilience to survive devastating injuries and while not really wanting to live with other members of their species, they grouped together in all likelihood to help kill a sauropod in a rare act of unity. Now, almost verbatim, repeat the above para for Tyrannosaurus. Which survived wounds from ceratopsians, bone diseases, and each other. There were punctured brain cases and neck/spine fractures and they still kept living and hunting, so you will need a mass extinction event and nothing short of that, to stop them.
@adamtruong1759
2 ай бұрын
A few things: 1) He technically included two Carcharodontosaurids Saurophaganax and Acrocanthoaaurus, even referring that the former was only found in groups and were adapted to prey upon the Mastodons. 2) This video is exclusive to North America. 3) He already has a video of Carchardontosaurus running a muck in Cenozoic Africa.
@tomcross3000
2 ай бұрын
@@adamtruong1759 Sauro isn't a carcharodontosaur, Sauro was never found in "groups", that's just Allosaurus- Sauro from all accounts is actually rarer than Allosaurus and not found in groups. Acro is smaller and its dubious that it hunted in groups, and what's your point with that last one? like what's the relevance..
@adamtruong1759
2 ай бұрын
@@tomcross3000 I mean, you said you found it interesting that didn't include sauropod killers in this video, I thought I would try to help by providing an answer.
@tomcross3000
2 ай бұрын
@@adamtruong1759 an answer about a completely different vid?
@adamtruong1759
2 ай бұрын
@@tomcross3000 Well, I thought you seemed interest in how "sauropod killers" could deal with Cenozoic megafauna, so I took the liberty to tell you about a video that was just that.
@brycesmith9878
6 ай бұрын
What an excellent video! This cements your position as my favorite prehistoric KZitemr! Anyway, a thought about packing hunting for the megatheropods. Is it still considered pack hunting if its a mated pair of acros or rexes? Pack hunting in my head is like a wolf pack or lion pride, not two big megatheropods and maybe some of their young.
@TheVividen
6 ай бұрын
Personally I wouldn't consider a mated pair as a pack, but I think any more than two would count. The tyrannosaurs we've discovered in groups seem to have a wide range of ages, so family groups may have stuck together well into subadulthood.
@brycesmith9878
6 ай бұрын
@@TheVividen well, that makes life much, much suckier for mastodons, mammoths, and whatever else a megatheropod pair would decide to make a meal out of
@TheVividen
6 ай бұрын
@@brycesmith9878That's for sure!
@ferociousrazordino3581
6 ай бұрын
Do you think the clovis would eventually try to work together with theropods and make them pets like humans did with wolves?
@TheVividen
6 ай бұрын
That would be awesome! I didn't even think about it. They'd probably have the best luck with the likely pack hunters since they could adapt the preexisting gregarious tendencies to their advantage.
@jointcerulean3350
6 ай бұрын
Something like a smaller tyrannosaurid
@brycesmith9878
6 ай бұрын
God I love these videos from you! Bye the way, is there any information on how eggs would be affected by the ice age?
@Ratchetcomand
6 ай бұрын
Do Megatheropods in Cenozoic South America next please
@coolbird6371
6 ай бұрын
Wait, couldn't the theropods better adapted for cold move on the land bridge between Alaska and Russia to go to Asia?
@TheVividen
6 ай бұрын
They definitely could! I do plan on making an Asia episode as well as a South America one
@coolbird6371
6 ай бұрын
@@TheVividen And don't forget to mention this comment in the Asia one!
@samuelruakere7728
6 ай бұрын
The more I think about the Kaimerans from Keenan Taylor's Tales of Kaimere (a spec evo project) and how they coexist with the dinosaurs of that planet is very similar to this video and concept of early humans meeting dinosaurs.
@cyan_wings5420
4 ай бұрын
And in a parellel future: **Humans riding dinosaurs** X;'D ^_^ =D
@fictionvstheuniverse5418
4 ай бұрын
a nightmare of tyranosaurs, i love it
@willshea2460
Ай бұрын
T.rex big, but MAN have FIRE
@AlmaNegra7101
Ай бұрын
Well... not like it would do much good, 5 to 6 ton bite, robust body and other attributes
@ferociousrazordino3581
6 ай бұрын
I want to mention that giant size is not always going to be detrimental in the way that their won't be enough food or speed to catch prey if they are bigger than native fauna. For one, large animals actually seem to be better sustainable for proportionally less food than smaller animals are, and if theropod metabolism studies are anything to go by, for an 8 ton theropod they'd be comparable to a 1 ton mammal. A human sized meal would actually be pretty fulfilling to a T.rex. And despite being large speed does not always become worse with increasinv size either.
@TheVividen
6 ай бұрын
That's a great point!
@connorstamps1298
5 ай бұрын
Knowing us humans we would probably call the T. rex or Ceratosaurus something stupid like The Small Arm Lizard or The Rainbow Crested Lizard if they existed in the Ice Age.
@mrcomino6028
6 ай бұрын
monster hunter irl
@jaredmc7982
6 ай бұрын
I think I heard that the paper on the Canadian Tyrannosaur trackway referred to a pack of Tyrannosaurs as a "Terror"? Not sure if that was accurately reported though? I think I could see the Tyrannosaurids going after Glyptodonts, since the larger species (Tyrannosaurus) would be able to out pace them, out maneuver their their tails, and crunch through their armor. Giant ground sloths might be a bit tricky or an interesting scenario for Tyrannosaurs, because Tyrannosaurs did evolve alongside both Therizinosaurs and Deinocheirids; while we currently don't have any evidence of either from higher latitude formations like Hell Creek, there has been at least 1 known species of Deinocheirid from Mexico, and it could be easily plausible that Therizinosaurs might be found there too that we have yet to find. So perhaps Tyrannosaurs would have "interacted" (hunted, fought or avoided) with giant ground sloths in a similar manner as they would have with Deinocheirids or Therizinosaurs? Also, I could see Tyrannosaurs taking advantage of the Bering Land Bridge to invade Asia once again, and start taking advantage of the mega faunal food sources of Asia and probably Africa from there too?
@jwb_666
5 ай бұрын
I love how we clearly see animals using tusks to fight and butt heads 12:45 but paleontologists now have a fetish for claiming that triceratops and pachys didn't fight
@stevesavy3368
6 ай бұрын
I actually wonder if early humans settling North America wouldn't domesticate any of the Aggro-tier theropods at the very least.
@adamjacobs6644
5 ай бұрын
Entelodonts didn't live with Mastodons Entelodonts died out during the middle Miocean. Mastodons appeared during the late Miocene and lived with big cats (Machairodonts). Just as we started domesticating animals I'm sure we'd of found a way to tame some of the smaller meat eating dinosaurs first. Then we would tame some of the giant carnivores and our society would be much like we see in Dinotopia. Only carnivorous dinosaurs would be friendly to humans as their ancestors learned to be thousands of years ago. We could be effective hunting partners to the large theropods. It would be similar to how humans use falcons and eagles to hunt.
@trainertealvgc2267
6 ай бұрын
I wish you had Spinosaurs in it just to mix it up. I feel like Baryonyx and Irritator would do well
@atToebiscuit
6 ай бұрын
This list only includes North American theropods, which is why there's no Spino, Giga, Carcharo, or Mapusaurus.
@malleableconcrete
6 ай бұрын
I suppose I might be a bit inclined to think that the Pleistocene extinctions were caused by human intervention, but I think you are underestimating how much the arrival of paleo-indians would spell trouble for time travelling theropods. They'd probably have a similar problem as the predators we know went extinct, like the American lion or Smilodon, only the most rugged and adaptable would survive and humans are a particularly dangerous and unfamiliar new arrival that can both kill them and their prey items and make life a lot more difficult, especially as the climate changes. The megatheropods would be in the most trouble, as you mention humans would start directly competing with them for their main food items, the largest herbivores, and the process of dwindling prey populations of large, reasonably slow animals would cause big problems, especially as human influence begins to radically change the nature of the environment, even before the invention of agriculture. Could T-Rex adapt to a world where the largest animal around for them to eat is a Bison, and where increasingly numerous and well organized bands of humans can pepper them with spears or set traps that regularly kill even the most powerful individuals? I think if Smilodon couldn't hack it, then Tyrannosaurs have no chance at all.
@juritudi57yearsago59
6 ай бұрын
Fire is a big thing as well. Flaming arrows are not too complicated to make. Plus with the added threat of megatheropods stomping everywhere humans will probably hone their defenses and be more creative on how to defend kills from these dinosaurs. Either way whether it be battle of attrition or head on fights. Humans will win at the end of the day. We are just too smart for our own good.
@Yutii-The-Yutyrannus
4 ай бұрын
Where the hell is my kind?! WHERE ARE MY YUTYRANNUS BRETHREN?! THIS IS UNJUST!!!
@RandomMackem0069
4 ай бұрын
Google says a group of tyrannosaurs are called a terror so I guess that and nightmare could be used interchangeably.
@timeshark8727
5 ай бұрын
Thinking of mastodons as equivalent to intelligent triceratops would seem to be an apt comparison. They would definitely be on the menu for a rex, though it wouldn't be an easy meal by any means. If rex hunted in pairs or pacts it becomes even more likely, still a rough fight and I doubt they would be the first choice of target for any predators. As far as mastodons, they would need to increase their group sizes and defensive behavior just to keep their young from getting picked off. They wouldn't need to change much physically though.
@ahmedshaharyarejaz9886
6 ай бұрын
A Terror of Tyrannasaurs.
@stefansalvatierra4913
6 ай бұрын
*Primal flashbacks intensify*
@matthewfrancis9987
6 ай бұрын
Damn I wish that Dakotaraptor was in it
@Azdal
5 ай бұрын
no Yutyrannus?
@Mid-Edits
6 ай бұрын
Thumbnail got me thinking they discovered theropods in the ice age😭
@ahmedshaharyarejaz9886
6 ай бұрын
Theropods would have crossed over the Land Bridge into Asia and then proceed to dominate the entire global ecosystems. Mankind would be a stunted species hanging onto survival until they somehow develop weapons strong enough to kill MegaTheropods and techniques to deal with smaller theropods packs.
@drh-ns8yd
6 ай бұрын
So good
@WildBillCox13
6 ай бұрын
Enjoyable.
@charizardfan1017
6 ай бұрын
I personally prefer the idea of calling a group of Tyrannosaurus a "Royalty" Cause they're the "Tyrant Lizard Kings"
@biohazard724
6 ай бұрын
I'm partial to a "Castle"
@wildbill9490
6 ай бұрын
I believe a group of tyrannosaurs is actually called a terror
@adhdproductions1851
6 ай бұрын
A monarchy
@johnburnett8625
6 ай бұрын
A "Kingdom" would be my preference.
@Clovernoris
6 ай бұрын
A Court of Rexes maybe?
@Magnaraptor1836
6 ай бұрын
Tyrannosaurus packs shall be called a Dynasty; Referring to it's definition, A gathering of kings.
@emersonworst4801
5 ай бұрын
Dang, that's good
@TheGBZard
6 ай бұрын
I imagine even after megatheropods go bye bye at the beginning of the holocene their presense would have sent echos throughout human culture forever, sparking stories of the giant feathered dragons which once terrorized the land
@duitk
6 ай бұрын
I wonder if the humans would have eventually developed technology or agriculture faster because of the pressure put on by the therapods. Or would the therapods survive until later cultures arrive with firearms? I just dont think humans would not eventually wipe out the therapods, once more ranged weapons, or better traps arrive it may be over for the dinos.
@stevepalpatine2828
6 ай бұрын
There's no evidence adult Tyrannosaurs had feathers. No all dinosaurs were feathered. Tyrannosaurs aren't dromaeosaurs.
@DRFishsticks221
6 ай бұрын
Tyrannosaurus probably wasn’t feathered as an adult
@SuperBetaBuxbros.
6 ай бұрын
@@DRFishsticks221yup
@SuperBetaBuxbros.
6 ай бұрын
@@DRFishsticks221dromeossurs
@Mateusz-sq9ox
6 ай бұрын
Great video:) In my opinion "dominion" or "dynasty" for T. rex group seems a better names. "Nightmare" could be great name for a group of Utahraptors, tho.
@TheVividen
6 ай бұрын
Thank you for your feedback! Both of those names are awesome.
@DinoboyLegosandMOCs
5 ай бұрын
I vote Dominion. It just sounds very cool, just saying Dominion of T-Rexs sounds right.
@wildbill9490
6 ай бұрын
Fascinating. This makes me wonder: what if the K-T extinction had been a little less severe, and some of the smaller dinosaurs managed to survive? How might they evolve during the Cenozoic and how might that affect the evolution of mammals and other surviving animals?
@TheVividen
6 ай бұрын
That would be really interesting to explore!
@jointcerulean3350
6 ай бұрын
Also bipedal crocodiles as well since a group made it to the Cretaceous
@dctPL
6 ай бұрын
Some of the smaller Dino's did survive... We call them birds today.
@wildbill9490
6 ай бұрын
@@dctPL I mean smaller species of non-avian dinosaurs
@dctPL
6 ай бұрын
@@wildbill9490 Well... Maybe they did and evolved into some species of "birds" we know today. After all, many non-avian dinos had feathers.I doubt that all modern day species of birds were the subject of DNA analysis.
@Liethen
6 ай бұрын
Imagine some conquistador, a frenchman, or some cowboy arriving in the great plains to find packs of two ton feathered dragons chowing down on buffalo.
@ksoundkaiju9256
6 ай бұрын
“Yeah…I think we should go back home…”
@adambrennan558
6 ай бұрын
"Roll out the long guns!"@@ksoundkaiju9256
@doragonzx
5 ай бұрын
"It seems My Destiny Manifested Elsewhere"
@blairdurward4324
5 ай бұрын
What’s Spanish for “F this I’m out!”?
@emilianorios4761
5 ай бұрын
@@blairdurward4324 La chingada con esta mierda is what you would say roughly
@alexandersviridov2937
6 ай бұрын
Ancalagon caught be off guard to the point that I spat my coffee out - what a legend.
@TheVividen
6 ай бұрын
The host of the Valar likely spat out their mead as well!
@MadlyMesozoic
6 ай бұрын
Great video. Thanks for the shoutout!
@TheVividen
6 ай бұрын
I'm glad you liked it!
@fearthepiggaming2998
19 күн бұрын
This is wholesome glad to see two of my favorite creators showing eachother some love
@7-sBone-Pit
6 ай бұрын
Oh man I love this, well worth the 26 a month XD
@TheVividen
6 ай бұрын
Always happy to provide content for my favorite Snax glazer
@subnombre
6 ай бұрын
Knowing that woolly mammoths on average weighed less than the average African elephant, and a maximum of almost 8 tons, they would be a great and delicious replacement for the Triceratops and other T Rex prey.
@Devin_Stromgren
6 ай бұрын
Right until the rexes ran out of food due to the fact that the mammoths couldn't make new mammoths fast enough to avoid extinction. 2 year pregnancies and all.
@8bitutopia182
6 ай бұрын
This is most likely your best video yet. And thats not an easy bar to climb over. The amount of research and detail here is nuts. You gave both sides very fair arguments, whether it would be elephants vs theropods or early humans vs theropods. I’d say I wanna live in a world like this diverged Pleistocene but if I was actually a human born back then and saw these dragons, I’d be scared shitless. And if they do somehow survive into the Holocene, I imagine they’ll evolve to be smaller, but still probably larger than bison and bears. Imagine Middle Ages North America with herds of bison and gangs of middle-range evolved Tyrannosaurus. Speculative ecology is such a fascination and fun subject to read and or watch. Thank you for providing this kind of content to all of us!!
@TheVividen
6 ай бұрын
Thank you so much for your kind words! I researched this one for months to try to get it just right and I'm glad that it was worth it.
@riohudson9612
5 ай бұрын
I absolutely love the idea of Tyrannosaurs evolving into fluffy dragons to rule the ice age. It really harkens back to their earliest ancestor, Yutyrannus, being arctic tyrants in of themselves. It's honestly fascinating how it's become more common knowledge that not only did dinosaurs survive in snow, but on many occasions thrived in it. Some of the earliest dinosaurs, even the earliest archosaurs, were already specialized for cold before they started taking over the world and it came full circle since with Nanuqsaurus and in this alternate timeline colossal woolly-rexes of death!
@rileyernst9086
2 ай бұрын
Highland tyrants.
@GODEYE270115
6 ай бұрын
Imagining a gang of giganotosaurus ambushing a paleoloxodon brings out my inner kid
@TheVividen
6 ай бұрын
Mine too haha
@loowick4074
6 ай бұрын
The thing with elephants is that they are quite sensitive to external Predators they arent used to dealing with. And usually go extinct relatively quickly when threatened. Their slow reproduction means they usually lose any evolutionary arms race and often do not have the numbers ro replenish casualties fast enough
@GRIGGINS1
6 ай бұрын
There is evidence of Humans actually arriving in North America 100,000 years ago. I did not say Homo Sapian Sapiens . I am saying Humans as in the other types. And Mammoths and Mastodons kept chugging right along.
@Devin_Stromgren
6 ай бұрын
Slow reproduction of large mammals is the biggest problem for the survival of any of the mid or large sized therapods during the Cenozoic. Especially since the theropods themselves would be reproducing relatively quickly by comparison.
@jessicaczyzewski4198
6 ай бұрын
@@GRIGGINS1Annoys me when they try to make humans out to be more dangerous than they actually were like you said he even in the 1850s a group of hunters still be demolished by a single bear because their weapons could not pierce with regards to a bear
@GRIGGINS1
6 ай бұрын
@@jessicaczyzewski4198 Yep. Even the Tribes that hunt African Bush Elephants don't do it all that often and don't go after the very large Bull Elephants. Because Elephants are not only problem solving smart they tend to not be alone.
@beastmaster0934
5 ай бұрын
@@Devin_Stromgren Yeah, once the large herbivorous mammals are dead, so are the large theropods.
@iratezombiemann
6 ай бұрын
Fantastic video. Probably your best yet and that was already a high bar.
@TheVividen
6 ай бұрын
Thank you! I'm glad you enjoyed it. I think this is the video I'm the most proud of, so I hope it goes well!
@Cassave78
6 ай бұрын
Oh my Gosh this was so epic! Looks like the theropods have triumphed over the cenozoic once again! It's pretty incredible how adaptable the theropods are despite all the challenges. Definently an h^2/10 video
@CB-eo6xo
6 ай бұрын
I wouldn't say they outright triumphed, more like they are able to thrive and survive well without overshadowing the mammals too much. Especially that the Probosidians are one of the few mammals being able to directly hold their ground and even adapt in an arms race against the theropods.
@GEK0dev
6 ай бұрын
This video was fantastic, I honestly loved the parts with Tyrannosaurus fighting the prehistoric elephantoidea, Mammutidae and just elephants in general. Honestly I would love an updated tyrannosaur PSA from you as you seem to be the most reliable channel on tyrannosaurus, Actually considering speculative weights for tyrannosaurus instead of only giving that to other large theropods, But more or less on the bite, How quick it could crush, Most likely not like a trash compacter but an actual jaw. And this video was a great example of theropods in the Cenozoic in general.
@TheVividen
6 ай бұрын
Thank you very much!
@GEK0dev
6 ай бұрын
@@TheVividen No problem my friend
@S0L1nv1ctus
6 ай бұрын
Early humans domesticating theropods= dinoriders
@LordSpinus
6 ай бұрын
Suggestion, if the three main theropods (T.Rex G.Carolinii. S.Aegyptiacus) lived in the cenozoic of africa [Just an idea]
@Intrusion498
6 ай бұрын
The scariest thing about deinonychus isn't that young ones can fly NOT GONNA MENTION SMALL DEINONS CAN CLIMB TREES but the worst thing is that they would likely see us as a prey option oh and they would literally eat you alive oh an I also wanna say on the whole tyrannosaurid or smth like that group thing possibly footprints of multiple tyrannosaurids ot smth it may have been a drought and they had no other choice but to team up
@loowick4074
6 ай бұрын
Nope, friendship ended with dog, now deinonychus is man's best friend
Having dromeasaurs as pets wouldnt be that bad@@loowick4074
@megamente7849
5 ай бұрын
@@loowick4074 "Friendship ended with horse now Maia is my best friend"
@codypass1709
6 ай бұрын
The way you said that we would be scavengers to the Megatheropods, and they will force us to be farmers are extremely inventive. I really love this speculation, especially the part with the possibility of most of the Ice Age's Megafauna survival into the modern world. Sure we were not exactly the main reason of their extinction, but we were a nail in their coffin. With the great dragons taking the wheel, and us mortals being able to adapt and live with these titanic titans, we can have at least a better understanding with nature. ❤ Keep up the great work man. ❤
@perrytran9504
Ай бұрын
Even early settled (American) peoples would have a tough time with the megatheropods. They are missing a very key ally in the horse, and based on how things went in our timeline their weapons would not fundamentally change all that much even for millennia. Now, early humans with domesticated smaller theropods though... that opens up a lot of possibilities. The medium sized raptors would be a bit redundant with dogs and the small ones with cats, but the larger ones just maaaybe could be selectively bred to fill a similar role to horses. Probably never as common due to their carnivorous diet, but even using them to drive chariots (if we never get to the point we can ride them) would provide a big increase in mobility for warfare or hunting.
@codypass1709
Ай бұрын
@@perrytran9504 How right you are Perry, you make a very valid point about how we would use these critters to our advantage. Imagine a Native American riding on a Utahraptor instead of a horse, due to their similar height and mass, that would be my choice of a steed. But of course a T.rex would be my prized mount, the Mammoth Hunter himself.
@tomatogenesis
6 ай бұрын
There _needs_ to be a game on this! This was so good to watch and each part was just so well-filled with its own flavor, of which I could never have had enough of. I especially loved that adapted Tyrannosaurus at the Pleistocene part. Please do keep making videos as good as this one was! 'Cause I'll be all down for it!
@JurassicReptile
6 ай бұрын
I enjoyed the video but I feel like the theropods from allosaurus’ size to smaller got ignored at the end. I would’ve liked if each one got at least a brief explanation of how they would do.
@TheVividen
6 ай бұрын
That's a good point. I will work hard to improve the next episode!
@loowick4074
6 ай бұрын
Yeah like stuff like cerato would be aces. Not too big to harm large elephants and rhinos while still occupying a macropredatory niche. They won't wipe us out, and we probably won't wipe them out because reptiles kinda breed more, especially if they live in Africa where their food source won't run out. Seems like it will integrate nicely into modern Africa or ice age Africa.
@JurassicReptile
6 ай бұрын
@@loowick4074Cerato would have a pretty good time. Bigger than a polar bear and designed for the forests.
@Dinoman-rt1uv
6 ай бұрын
Rule number 1 like before its even out.
@TheVividen
6 ай бұрын
You deserve a gold medal, but a heart's the best I can do
@Dinoman-rt1uv
6 ай бұрын
Can you please do Asia or Euraisa next because I really want to see how the biggest landmamals perform.@@TheVividen
@TheVividen
6 ай бұрын
@@Dinoman-rt1uvthat's the plan! South America is also on the list.
@ronniehopper2726
6 ай бұрын
I want to know if humans could survive the cretaceous period
@DunedinDino99
6 ай бұрын
For those claiming oxygen levels are a problem: Dinosaurs had the same breathing system as birds and crocodiles, which breathe more efficiently than mammals. Additionally, the extant blue whale breathes air and is the largest animal ever.
@robinsonray6766
6 ай бұрын
Good points but blue whales are likely not the largest animals ever. There's an ichthyosaur and a ancient whales species that were as large as blue whales, and another ichthyosaur species which was larger than a blue whales and the fossil we have was still growing
@DunedinDino99
6 ай бұрын
@@robinsonray6766 Those ichthyosaurs lived during the Triassic when oxygen levels were even lower than Today.
@robinsonray6766
6 ай бұрын
@@DunedinDino99 yes good point
@robinsonray6766
6 ай бұрын
@qbgrindddd the key word is likely. It's absurd to claim something as the biggest ever, when we only have a fraction of the fossil record and in the last 10 years alone we've discovered 3 separate species that could possibly eclipse blue whales in size.
@robinsonray6766
6 ай бұрын
@qbgrindddd likely is the key word. We only know a fraction of the fossil record yet in the last 10 years alone we've discovered 3 separate species that may have eclipsed blue whales in size.
@worldbigfootcentral3933
4 ай бұрын
Unlike the theropods usual prey, Mammoths were FAR smarter, and look at the tactics of musk ox and American bison for how they handle pack attacks
@subnombre
6 ай бұрын
Could I do the Asia chapter? I want to see the theropods against the great P.Namandicus
@atToebiscuit
6 ай бұрын
I think P. namadicus would fair well. Big adults are more than 3 times the weight of Tarbosaurus and Zhuchengtyrannus, the largest theropods in Cretaceous Asia.
@denistyrant
6 ай бұрын
@@atToebiscuitA single individual maybe but a pack would be a nightmare, not to mention Zhung already coexisted with dinosaurs that were around the size or larger than P. Namadicus
@houstonguy1984
6 ай бұрын
Great video, but one possible thing the video left out… if humans were able to domesticate certain less-aggressive wolves into dogs, could it be possible that they would’ve tried to domesticate certain theropods?
@TheVividen
6 ай бұрын
That's a super cool idea!
@tyrannotherium7873
6 ай бұрын
I mean, theropod dinosaurs would be dominant in the Ice Age, but they would be extinct, because the climate was much much colder, and the only theropods. I could probably see that would adapt to the ice age would be Dromaeosaurus and troodontids
@robinsonray6766
6 ай бұрын
Yutyrannud & nanuqsaurus were tyranosaurids that thrived in ice.
@tyrannotherium7873
6 ай бұрын
@@robinsonray6766 but back, then it was still warmer
@Mateusz-sq9ox
6 ай бұрын
@@tyrannotherium7873 dinosaurs weren't cold-blooded reptiles mate, most of them (if not all) were endothermic.
@robinsonray6766
6 ай бұрын
@@tyrannotherium7873 it was warmer in general, but these tyranosaurids lived in habitats similar to modern day England which gets freezing in winter. It's a fallacy to think every habitat was warm during the age of dinosaurs. The poles were still cold, not as cold as today's poles, but definitely colder than most other habitats today
@tyrannotherium7873
6 ай бұрын
@@Mateusz-sq9ox no shit dinosaurs warm blooded however, the Cretaceous period of Alaska was much warmer back then it wasn’t an Ice Age
@cjacobs851
6 ай бұрын
Apparently the collective term for tyrannosaurs is a terror. A terror of tyrannosaurs. I’d say a nightmare of T-Rex is still up for grabs
@justjoshua5759
6 ай бұрын
Also the T rex vs mastodon took me back to prehistoric park when Matilda tried to take on martha. Prehistoric park actually could make a great video idea in terms of how it could work with present day ecology and conservation today.
@spideyfanw1748
6 ай бұрын
All this speculative ecology gave me an idea. How would dinosaurs compare/compete with modern day dinosaurs aka Birds? Specifically Dromeosaurids vs Terror Birds and modern raptors like Hawks and Eagles? Edit: Also Ratites like Ostriches, Emus and Cassowaries.
@robinsonray6766
6 ай бұрын
Dromeosaurids filled a different niche than birds of prey, during the age if dinosaurs other birds filled the niche of modern birds of prey. Dromeosaurids and terror birds filled a similar niche. Dromeosaurids and terror birds both had many biomechanical advantages including airsacs and hollow bones. The issue with birds is that they have a posture issue ever since they lost their bony tail thus making them front heavy which limits them. A 200lbs terror birds will smash its beak into prey while a 200lbs dromeosaurid would jump on top of prey, grasp with its 4 limbs and bite. Essentially, they could take out bigger stronger prey. Predators need some athleticism in order to catch prey. Birds poor posture limits their size, you need a column stance ti be large. The biggest terror bird was nowhere near as large and powerful as a Utah raptor
@spideyfanw1748
6 ай бұрын
@@robinsonray6766 The biggest of Terror Birds stood taller than an human. Couldn’t the biggest just kick the shit out of Utahraptor like Ostriches and Cassowaries do to people and other animals today? Also Modern birds of prey could see smaller dromeosaurids as food since they’re small enough to be picked up and I believe that they would also compete with bigger dromeosaurids for the same prey items. Or would they all just coexist with no one eating the other?
@robinsonray6766
6 ай бұрын
@@spideyfanw1748 you're 100% right about birds of prey being able to eat smaller dromeosaurids and sometimes competing for the same food, but it goes both ways. Regardless they filled different niches. Dromeosaurids lived alongside birds, some of which were almost identical to birds of prey today. Enantiornithes were more diverse than today's birds during the cretaceous but filled identical niches. Dromeosaurids dealt with them how theid deal with today's neornithine. Utah raptor, when leaning upright, would be about 10ft tall. Theropods are typically depicted vertically but they could certainly and likely usually leaned in an upward posture when fighting to make themselves seem larger and in this position their claws are in perfect position. Utah raptor was far too massive and powerful for terror birds. Ostriches are about 10ft tall as well. They wouldn't stand a chance
@shafqatishan437
4 күн бұрын
American mastodon as a specie was a Pleistocene megafauna, not from Miocene. Lions never hunted a fully grown elephant, that famous clip was of 30 lions attempting to kill a young weakened female, they still failed. I watched the whole documentary. Theropods are extremely overrated. Their bipedalism puts them at a huge disadvantage and their jaw alone won't be effective against elephants, with the exception of T.rex and it's equal sized ones of course. Mammalian predators like cats are far more formidable pound for pound and it's stupid to say 1 t.rex equals 40 lions. I understand these dino fanboys abd their bias but this needs to stop at some point. Mammals are not getting the respect they deserve.
@gigamosaurts2513
6 ай бұрын
Do south america please i want to see my son giganotosaurus doing during cenozoic
@TheVividen
6 ай бұрын
That's the plan!
@gigamosaurts2513
6 ай бұрын
@@TheVividen 👍
@PrehistoricMagazine
6 ай бұрын
Another great thought provoking video. I’d say if trex did live in that time period it would be time to employ heavy plumage. Mike
@RubyCarrots3232
6 ай бұрын
You know, Yutyrannus/Nanuqsaurus being frigid climate predators already would have it made here.
@monsterzero521
6 ай бұрын
North American giant theropods Tyrannosaurus rex, Mcraeencis ,Saurophaganax, Acrocanthosaurus
This is the Marvel 1602 universe, in which Europeans arrived in North America and there were dinosaurs there just because. The indigenous people were like, "you don't have those? Wusses."
@justinw-s1694
2 ай бұрын
I feel like South America is just gonna be GG for the mammals down there. Gotta deal with the Giga and Carno. Without any really colossal big hitters with a few rare exceptions. Australia would be a very interesting setting however...
@powerbalancevathelastkitsu2504
5 ай бұрын
Group of Rex: A Nobility Group of Utah: A Coalition Group of Torvo: A Dominion Group of Allo: A Pride Personally, I'd rather see what would happen if dinosaurs were around today. Also, imagine if mankind tamed Utahraptor instead of wolves in America
@Degon1954
2 ай бұрын
Just imagine early humans(cave man) taming theropods and using them as farm animals or pets? That would be cool to have.
@CB-eo6xo
6 ай бұрын
Honestly glad this felt very evened out without too much bias between either the Theropods and the Mammals. This honestly feels like the mammals really can in fact stay in the game and adapt pretty well towards the new pressure in spite of the Theropods obviously dominating the Apex predator niches from the get go which than forced some of them to evolve to cope with the conditions that aren't as easy to thrive in compared to their native Mesozoic timeline.
@miguelsoto8150
6 ай бұрын
imagine that you are part of a hunt group and just manage to take down a wolly mammoth, and when you and your friends are preparing the animal, sudenlly 5 scally demons(saurophaganax) almost the size of the mammoth you just take down appears from the woods and start springting towards you, thats horrifing.
@TheVividen
6 ай бұрын
Playing mammoth hunt on hard mode
@Aburg76
6 ай бұрын
2:21 Ah shit, he's real, everyone head for the hills
@tristanwilliams4180
6 ай бұрын
i love to see a Fully Grown Tyrannosaurus Rex Hunt a Woolly Mammoth
@MarcoPolo-vb1sw
6 ай бұрын
Megafauna would not have evolved if theropods were around. Raptors would have kept mammal size in check.
@rileyernst9086
2 ай бұрын
A murder of crows A nightmare of allosaurus. A massacare of tyrannosaurus.
@timetraveler1973
3 ай бұрын
i mean... couldnt humans just dig a massive 20 foot deep ditch and bait a rex into it just cover it with sticks and stuff..
@Skyypixelgamer
6 ай бұрын
I think the elephant situation is handled very well in the spec evo/biology tales of kaimere handles the elephant situation well.
@waffletop1018
8 күн бұрын
according to google, a group of rexes is called a terror
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