SOURCES I outsourced the editing for this one since I’ve been so busy this summer, and some crediting/captioning errors crept in a result. At 6:16 the art was actually by Allotyrannosaurus, and a Tyrannosaurus was erroneously labeled Dakotaraptor at one point. If you see your art vaguely or incorrectly credited, please let me know so I can update this comment. Edit: AtakDraws was incorrectly labeled as kyrumlack as well.
Dear Vividen Paleontology, I really liked your videos of throwing champion mammals into the dinosaur 🦕 🦖 arena. I have always thought about these scenarios and often come to the same conclusion,that mammalian megafauna should be grateful to asteroid ☄️ that wiped the saurians out. I however 🤔 💭 run into a puzzled thought when it comes to hominids - us humans. You are a well established TH-camr with the resources and platform to work out that scenario. I am sure that there are many who would like to see how humans fare against dinosaurs. Of course the Jurassic Park franchise has shown how modern humans would fare against them but what I want to see is how other people in history would hold up against these monsters. A few candidates from my side would be, austropithecus, first homo sapiens - the out of Africa 🌍 guys , neanderthals, ancient civilizations like Rome or Greece 🏛, Native Americans, India 🇮🇳, Colonial European powers like musket and cannon era and Wild West American frontier. Thank you for your reading my comment in a ocean of replies. You already have the knowledge of dinosaurs, it might or not take a little research to find out about our human ancestors 😉. Thank you,
@@doragonzxI honestly feel like the giant Icthyosaurs would either learn to stay well away from them or shrink in size, if not end up completely decimated by Livyatan to the point where the whales thinking “The hell happened to the food?”
@@joshuamattingly1232 one thing that Vividen also did not mention and would factor into this is that Whale take A really long time to grow and reproduce. Even more than mammoth. The pregancy are escpecially long with toothed whales with orcas taking around 18 month and sperm whale taking 16. and they can only have a single pup while IChtyosaur often are found with 3. Ichtyosaurs would also be far more swift than the bulky Livyatan.In my opinion, Livyatan would not Dominate the oceans as much but Would still be the top Dog. Plus while they are powerfull, they would not risk injuries for nothing. It would be like Orcas and sperm whale, they would avoid each other more than try to figth each other.
@@nikolagnjatovic1132 you try doing anything well while also worrying about a 9-10 plus ton murder chicken with teeth and jaws that can explode not only you but every bone in your body. But that aside, part of me does wonder if the Mammoths would develop newer behaviors to combat T-Rex in the future, like maybe adult males stick to smaller herds led by the eldest of the group or males stay within herds instead of going solo, maybe they get more aggressive and basically try to psyche out the T-Rex by ‘Leeroy Jenkins’ charging them the first chance they can and trample them. Maybe their tusks rearrange into more defensive/offensive tools.
@@joshuamattingly1232 If they survive long enough and adapt i would think they either become bigger, or smaller depending if they find a succesful way of avoiding predation, but yeah socialization would be their best bet against t-rexes.
@@joshuamattingly1232 there is indeed a good chance that mammoths would indeed adapt to Tyrannosaurus predation, though I'd imagine their population would already be heavily reduced. In that scenario, mammoths would probably need a much higher and faster reproductive rate to maintain a stable population, whilst also dealing with all the ways Tyrannosaurus would potentially adapt to their defensive behaviors in turn.
It would be pretty cool! Megalodon is definitely built more for combat and predation of extremely large prey, but Ichthyotitan may turn out to be quite a beast itself if we find more material.
i ve heard the absolute high ball for ichtyotitan being around 40meters in length and ~300 tonnes, since the fossil found is theorised to be a juvenile, and even then that would be around 25 meters in length. it would be really interesting
So while all the land critters are fighting for their lives against a metric fuckton of threats, Livyatan and Perucetus are living the good life, feeding on whatever the hell they want, and not having to worry about attacks from anything larger than them.
@TheVividen am I crazy, or are mosasaurids that grew up to 50-60 feet in length? If so, wouldn't that make them some level of competition for both whales?
@@DoomRulzcomparable in length does not make them a threat, the longest snake( not boas and constrictors) are the same size as a croc and you know they will get eaten in a single bite, a liviyatan weighting as much as more than 5 moasaurus, and mosasaurus weren’t really that build for 1vs1 neither
Always the T-rex is the biggest obstacle. In other places in the world during the late Cretaceous there were not so many mega theropods comparable to T-Rex in size, certainly Cenozoic animals would have had more chances.
Not so many? What mammalian actually was comparable to trex size in the first place? Even the biggest of sloths were topped at 5 tones max, no where near the biggest rec
I loved this series! I know how long it took to make these videos, and I understand why you’d choose not to continue this series, but other installments with more creatures would be great! Maybe to simplify things, it could be focusing on a single type of mammal surviving in Hell Creek or some other Mesozoic habitat. Creatures like the American Lion, Paleoloxodon, and Megistotherium would be great picks.
I'm definitely going to continue the Megatheropods in the Cenozoic series! I'll probably also do more Thrive or Eaten Alive but on a smaller scale like you mentioned. Doing ten animals in a single video is a lot of work!
@@TheVividen These 10-at-a-time ones have been rad, but to paraphrase a common video game saying, I have no problem w/shorter videos that come out more regularly and result in less intensive work for yourself.
@@TheVividenThat all sounds great! Smaller videos ranging from 1 to 3 creatures would be perfect. They could have themes, with carnivores, herbivores, and marine mammals all having their own smaller, simplified videos. Maybe even some Cenozoic birds and reptiles could make into a Thrive or Eaten Alive video.
I feel that one thing to mention about the Wooly Rhino is that it's eye sight was probably not very good, while having a pretty good sense of smell. So a determined Tyrannosaurus Rex could easily exploit this weakness, especially at night (unless the rhino got whiff of the stench the megatheropod must've had).
Congrats on finally finishing the trilogy! These kinds of videos are not only unique but also fun to watch, and I wish you the best of luck on your future videos.
It was so cool to finally get to see the finale as I ate my breakfast this morning!! Once again I can't thank you enough for making this series on my request :) I'm glad and agreed with Smilodon scraping out a living along the Arctodus and Daeodon as you said regarding the latter two generalists are the most successful The Columbian mammoth and Paraceratherium unfortunately did/would suffer from casualties to predation as you said although I do think a hard neck whack from a Paraceratherium might help it although I can imagine them loosing a tail in a hunt at the minimum sadly. And the mammoths well strength in numbers so maybe bull males would form coalitions more frequently to the risk of Tyrannosaurus? But overall I was happy with the Columbian mammoth's chances they oddly seem to do better in the late Cretaceous then they did the Jurassic. As for Megatherium, I believe they have armour underneath their skin but that obviously wouldn't stop a T.rex bite so sadly I think they'd either succumb to predation or maybe they'd shrink dramatically to not be noticeable?? The whales domination of the western interior seaway surprises me because I thought Tylosaurus or Mosasaurus would be at least dangers to individuals but maybe the danger posed by them would be too great to consider viable meals.
A hard neck whack from a Paraceratherium would indeed help, but you do realize that is basically just bringing its most vulnerable vital spot closer to Tyrannosaurus's jaws, right? That's a very risky defense strategy in my opinion, and to put it bluntly it would likely only work once in every hundreds of times, and even then it would hardly do any critical damage to a Tyrannosaurus.
@@jkjk7423 Well yeah it is risky. I wasn't say that would be an immediate winning move for the Paraceratherium but more it could maybe stun the T.rex briefly depending on the size of the two individuals? It would be brief though if it was on the head. Aside from neck whacks and kicks along with shoulder barges obviously that's the only way they could defend themselves, they'd unfortunately still be at a disadvantage along with their extremely slow rate of reproduction and gestation times including how long it might take to give birth as well as the time needed for the baby to reach adulthood. They might not do well or if they did cling on it would be in low population numbers maybe in areas away from T.rex territory but who knows? Maybe they'd develop a group defence which would be useful if the Columbian mammoths might do a similar defense strategy perhaps the giant hornless rhinos might band together for mutual defence?? Females would probably be more likely to do that I guess
Simbakubwa is dubious and not well-researched at all. its weight gets thrown around a lot due it suffering from bad size estimation methods. the highly dubios size estimations of 1ton+ estimations are from estimating their size from Felids witch is stupid and flawed method. The Simbakubwa is a Hyenadont which is notorious for their massive skull to body size among other animals, but to estimate their size with Felids that has one of the most smallest of head to body ratio is bound to make extremely hyper inflated size estimate. the real Simbakubwa is actually around 400kg( it is made by basing Simbakubwa with its closest relatives Hyenodents to estimate its real closes size estimation). it's not even the largest of the hyenodents. that goes to Mighty Megistotherium.
Ok, fine, Perucetus was okay to have in this video, as it did have a better chance than I expected. This was a nice video, but I did wish 2 things: 1) That you didn’t feel like you needed to rush out this video (if anything, imo, I would’ve been okay with waiting if it meant that the resulting video would’ve been worth it. Quality over quantity, as they say.) And 2) that more newcomers were added rather than just one at a time. (With that said, when this concept does return to the channel, I would love to see the “left-behind-ers” (the mammals from the Triassic and Jurassic episodes that never got a chance to shine in the Jurassic Episode (for the Triassic ones) or in this one, the Cretaceous Episode (For the Triassic and Jurassic ones) get a chance to shine.) Can’t wait for the next video of Megatheropods in the Cenozoic (All will be great, but I am excited for each for different reasons: South America because it will feel most like the Mesozoic (Also, given its proximity to Antarctica, it could be worth tackling Antarctica in that episode as well as there wouldn’t be another time or opportunity to do so, imo. Not to mention the fossil material and environments.), Europe because of its unique and fluctuating ecosystem throughout the Cenozoic, Asia because it had the Cenozoic’s biggest heavyweight mammal contenders (plus, the Battlecruiser tier would probably just have Tarbosaurus and Zhuchengtyrannus, but I’m not sure), and Australia because of its unique fauna for both teams, as well as the environment in the Cenozoic, and the earliest “human-made extinction” on any continent in the Pleistocene), as well as the upcoming video on if Megalodon can survive on 4546B, a.k.a. the planet from Subnautica.
15:56 But as Goji Center phrased it, if any proboscidean was to enter Late Cretaceous North America, it would have to be Palaeoloxodon namadicus, antiquus, or recki.
Thrive or eaten alive: Hell.Creek edition! Man this was amazing. I love the improvent in terms of editing and the selection of animals for the video is very cool. It looks like Livyatan will rule with an iron fin once again! A very solid h^2/10 to finish the series
s there a possibility that you could make a video about the Cretaceous predators of South America in the Cenozoic period, or the North American predators that migrated south from your previous video? If not that's alright
I think one thing in bull mammoth’s favor are bachelor herds. While not always the case, bulls of different ages will often group together and the elders will act as teachers. Perhaps if they do form a stable population then some of these bachelor herds could exchange techniques to avoid tyrannosaurus. Also fossil evidence shows woolly mammoths may have used their tusks as clubs as shown by damages on the shoulder bone, and this likely applies to the Columbian relatives. While they likely weren’t as devastating as some of the other weaponry from the dinosaur world, they could still do some solid damage and would be worth avoiding.
@TheVividen They're worth it, though. These "Could they survive" videos are my favorite type of sepc evo videos other than alien planets. I've been watching yours and Madly Mesozoic's videos like crazy
0:55 that’s not an angiosperm. Ephedra is a genus of gymnosperms, specifically in the order Gnetales which is most closely related to the Pinales, the true pine trees (which only includes the genus Pinus and doesn’t include other gymnosperms such as cypresses, araucarias, yews etc.)
I believe that of the large megaherbivores of the Cenozoic, the ones that would have the greatest chance would be those that lived in the Paleocene, Eocene and Oligocene. Temperatures were warmer than today, very similar to the Cretaceous, these animals ate more of shrubs and leaves on trees, which would have been abundant in the Cretaceous. Predators at that time were also huge, they could occupy niches of medium-sized predators. Paleogene mammals weren't as intelligent, and carnivores weren't as advanced and specialized. But because they lived in a world more similar to that of the Cretaceous, perhaps they could do better than animals from the Neogene and Quartenary
The long awaited finale to this series. And it delivers!! I absolutely love that the medium generalists thrives, its why survival is about the fittest, not the strongest. Although I find it funny that Perucetus and Livyatan are just dominating their ecosystem. I think the only remote challenge a Livyatan woudl find is the Mosasaurus since they were comparable in length, but definitely not in weight. I’d say a battle between a Livyatan vs a large Mosasaurus would be like a Sperm whale vs a even larger Colossal squid, but it would still heavily favor the whale.
Great work and sound conclusions. To my understanding burrowing and omnivory have only been suggested for mylodonts, a different clade of ground sloth, so Megatherium wouldn't have either advantage. Love me some big sloths but I imagine it would have a hard time. Good points on rate of reproduction. Imagine that's going to be a huge mark against really big mammals even accounting for greater parental care. Well done!
On land, wild boar would have a chance. They breed rapidly (faster than a dinosaur can lay eggs), adapt to almost any environment, and are true omnivores. They would probably be eaten in large numbers by predatory dinosaurs but they are very fast and live in large groups so there would always be enough to reestablish the population. Large aquatic mammals would do much better in water.
Remember Smilodon likely lived in groups based on individuals we have found that survived crippling injuries for years afterward. If Smilodon had group sizes comparable to lions and wolves, that's a dozen big cats enough to make even juvenile Rex hesitate though wouldn't matter to an adult of course.
I do have a question though. Throughout the series previously the prehistoric mammals were placed in different places around the world where they originally lived but that did not happen this time Can I ask why you decided to place them all in Hell Creek?? Not that I'm complaining by any means just was curious I certainly wouldn't complain about getting to see my favourite dinosaur species of them all ever since I was younger to this day (T.rex) going toe to toe with the towering Paraceratherium, the steadfast Columbian mammoth or even giving a confused sniff at a Smilodon haha As for the spin off series you mentioned with theropods in the Cenozoic I have loved that too!! Although now this is over as stated before I do wonder how certain non mammals would fare throughout the Mesozoic? Kelenken the giant terror bird, Megalania, Purussaurus , Dimetrodon, Inostrancevia, Lisowicia , Argentavis, Titanoboa etc oh and Megalodon the giant shark? 🤔
Hi Josh! I'm so glad you liked it! I decided to put them in Hell Creek this time because I'm starting my Master's soon, and I knew I wouldn't have the time to do another level of research on the Cretaceous equivalents of the mammals' Cenozoic environments. That adds even more time to the video production that I knew I didn't have. But thank you for suggesting this series. It's been a blast!
@@TheVividen That's understandable! I hope your masters goes well :) I do hope in the future you might decide to return to this series someday Perhaps there could always be a remake episode if you ever felt like it of course or perhaps as stated a spin off series at some point
I can tell someone else made the video, and with it come some perks and some strange moments. You noticed some, and the editing is very smooth so credit to your assistant, but it is a little weird to see JP rexes and hairy ground sloths when you're talking about it being hairless. Hope the video still does well though, and I wanna try out your software it seems better than the one I'm using.
Great video and well worth the wait! That being said, kinda sad that you didn't stick to your previous 2 scenarios where each creature was dropped in the area's mesozoic equivalent. So smilodon being in Triassic/Jurassic South America but suddenly apperaing in Creatcous North America threw me for a loop
As far as I'm aware there's no evidence for Alamosaurus in Hell Creek, but perhaps in other areas it may have coexisted with Tyrannosaurus! We'll have to wait and see...
yeah Tyrannosaurus is too big too powerful for a short faced bear to handle megatheropods like Tyrannosaurus make large mammalian land carnivores look hopeless dinosaurs are very OP (overpowered)
Perucetus’ biggest problem in this scenario might actually be Livyatan. And Livyatan’s biggest challenge might be the same one that Orca would face in the Mesozoic. They might decimate the local ecosystems to such a degree that they run out of food.
11:03 Sues head is way smaller than on this picture. I think the skull is 1.5 metres long and this isnt show on this picture very well. The Dimensions looks gigantic😅. And it would mean that sues head is longer than a human.😂
8:27 Great now I have idea or thought (even tho it’s very unlikely to happen Realistically) of a T-rex seeing a Livyatan in the water and it staring back at it (and theirs my young mind making the said Livy do a Free Willy to a T-rex (except grabbing it via mouth) 9:10 for the Perucetus Colossus in the other is watching a trex swim or maybe a sauropod (perchance or not) from one island to another while eating and doing its own thing. (Sorry for this weird or awkward comment I just want to say something about that after I saw this video)
the only problem i see with livyatan is that...everything its eating...can bite back...sure everything else is smaller than it either in overall size or just mass but when it comes to it nothing is going to die without a fight...and the cretaceous reptiles have some good bark to go along with their bite...mosasaur's in particular had astonishing bites with a wider gap...i would have thought would give them special privilege in eating livyatan...at least specimens such as tylosaurus, prognathodon and the ever famous mosasurus itself...all reaching the similar lengths of 12-15 meters or the speculated 18 meter giants (for mosa at least)...i would argue that a giant whale would be at a disadvantage as far as prey acquisition goes due to all prey items being much sleeker and more agile than the prey it is used to...as well as defense if a mosasaur was to spot a whale unawares...lacking the reaction time to either prepare for defense or to launch a desperate counter attack ...a power house to stack up against its apex equals..but by no means a landslide win...at least in my book
dont think a mosasaurus would try an adult livyathan due to mass disadvantage,in other hand if mosasaurus was faster than liviathan its possible that they dare snatch a calf from his mother since they are not able to defend themself .plus whales reproduce very slowly,meaning infanticide predators can really hit very hard for the specie.
@@sweetypredator1067 idk…mosa usually attacks from below…and animals aren’t usually fussed over mass…size sure…if you can see your foe/prey is larger than you in height or length it usually means they’re bigger than you…but Mosa is comparably the same length as the whale…might not be sport hunting but I wouldn’t hesitate to say that every now and again a whale would fall victim to the mosa…and not just the young or weak…maybe an opportunistic meal…and a hard earned one at that
I can't agree with Livyatan getting a 10. If there weren't any apex predator (sharks or marine reptiles) in its size range, it means that large prey items were probably too scarce to sustain it. Adult livyatans would quite possibly starve to death. I'm not saying that it would surely fail. Intelligence and echolocation might turn it into a succesful generalist predator, able to find large ammonites where a mosasaur can't, therefore allowing it to survive despite its enormous food requirement. But I would definitely not give it a 10, maybe a 3 or 4.
Maybe these could make for interesting future video's 4. Can Koolasuchus survive the Amazon rain forest? 3. Can Deinocheirus survive modern day Africa? 2. How long can the Deathclaw (Fallout) survive Peter Jackson's Skull Island? 1. Can the Vastatosaurus Rex (Peter Jackson's King Kong) survive Jurassic Park/World?
Given your knowledge and also how recent this video was I want thou opinion on two things out of curiosity. If not anyone else who reads this and wants to comment. Answer either or and as you want lol. 1: How do you think Spinosaurus would fair in modern day africa [excluding humans, just the environment outside of them]. Most especially against things like say hippos? My friends joke argue about this a little bit and especially about the later against the foolishly large mammal. Would Spinosaurs dominate the riverways [and in course hippos] or would the waterways [hippos] dominate them? 2: How large of an impact say would giant pterosaurs [Azhdarchids more or less] would have on most mammalian predators? How would a modern day look if somehow around 2 ish million years ago a bunch of large pterosaurs entered the scene? Either way extremely fun video and honestly really fun as someone who's a little obsessed with speculative/what if ecosystems.
Interesting questions! I'd say that Spinosaurus would do pretty decently in modern day Africa, but not dominate due to the lack of large fish compared to where it's from. Hippos are certainly formidable animals, but they wouldn't fare well in a one-on-one against a theropod that could push 7.5 tonnes. The biggest issue would be adapting to eating mammals rather than fish. As for the azhdarchids...my initial thought is that their young would struggle given small mammalian predators and competition with birds, but neither of those issues stopped them from succeeding in the Late Cretaceous. There would certainly be no shortage of food items, and they'd be large enough that most animals wouldn't dare mess with them.
Would you do a reverse video with non-avian dinosaurs and/or other mesozoic reptiles in the Pleistocene, either in La Brea or South Dakota? (Ironic and poetic given that was part of Hell Creek's distribution)
Honestly, the only animals that what survivors deaodon and that’s pretty much it I bet a smaller juvenile Tyrannosaurus would be on the menu triceratops calf, but the adult Tyrannosaurus would be its worst nightmare
Love these videos! But I have a question. Many predatory mamals won't hesitate to demolish the nests of ground-laying animals. This is a big reason for why the Terror Bird went extinct... so the thought occurs to me that if a mammal can survive marginally well, would it gain the upper hand over time? Great video, take care, my friend!!!
Terror birds didnt went extinct for competition or mammals stealing their eggs, they were over long before they crossed with big mammal predators it was in fact climate change that finished the big birds. They didnt went outcompeted or suffered greatly for other mammals stealing their eggs, just like any crocodile or hell even big flightless birds dont get their number shredded because of that.
That’s not a reason terror birds went extinct. Titanis evolved in North America alongside cats and then proceeded to reign as an apex predator for 3 million years. Additionally, the majority of archosaurs, dinosaurs included, were likely good parents. No mammal is going to attempt to raid the nest of something that can squish them like an ant.
Arctodus:*standing up to a T-Rex* I'm gonna beat your butt tiny arms! And then I'm gonna wear your crown! T-Rex:That was weird. *bites it in half* Jokes aside I'm glad the bear just kinda gets to do what he wants. Also does anyone remember that old illustration that had a Bear face a T-Rex and they said the Bear would win cause T-Rex was slow and stupid? Jokes on them XD
I mean, I do believe that a Columbian mammoth bull would probably just stay in its ground and try to make it self look bigger, and make terrifying noises to scare away a Tyrannosaurus
If Mammoths could survive for a while, I would very much imagine they'd evolve to form herds including the Bulls and that their tusks would become significantly more adapted for combat and piercing.
Do you think the next episode will cover transitional species like you mentioned before? I think that would be a great episode over a topic that doesn't get covered nearly enough.
Livyatan: Wow this easy! How you guys doing. *Every single mammal struggling against Tyrannosaurus, Ankylosaurus and Triceratops: CHANGE IT BACK OH GOD!*
@@luzvazquezhernandez2913 pala can grab trex with it trunk and throw it or strangke it,gore with tusks throw it around ofc trex can do few things but not as much so it more 95/20 for pala on majority
I think for the herbivores that feed on grass, such as Elasmotherium, this would be a very difficult transition. Most modern mammals completely avoid ferns, cycads, and ginkgoes that have persisted in the environment past the mesozoic. Most modern relatives of these plants have toxic phytochemicals that discourage herbivory. Maybe if grass was unavailable then these mammals could survive on ferns and cycads, but I strongly doubt it.
I think your underestimating megatherium. Ground sloths already lived with giant archosaur predators and even outlasted them such as the Terror birds and sebecids. They also are less warm blooded than most placentals meaning adapting to a warm climate wouldn’t be that hard.
Livyatan rules, you should make a series "Could the Mesozoic survive Megalodon?" where you would tell how easy would Megalodon mess up the ocens of that time and how things could reorganizea afterwards
@@kilianteni7884 but those weren't built like Megalodon, they probably feed on way smaller prey than them like molluscs and smaller marine vertebrates, they would mercilessly attacked by Meg
@@DJuuJ Himalayasaurus was a full on macropredator and for the Real giants like Aust colossus we dont know but if Aust colossus was like a giant Himalayasaurus than he would easily kill a megalodon.
SOURCES
I outsourced the editing for this one since I’ve been so busy this summer, and some crediting/captioning errors crept in a result. At 6:16 the art was actually by Allotyrannosaurus, and a Tyrannosaurus was erroneously labeled Dakotaraptor at one point. If you see your art vaguely or incorrectly credited, please let me know so I can update this comment.
Edit: AtakDraws was incorrectly labeled as kyrumlack as well.
Always love it when people cite their sources, and even better when they go back through to correct it!
Dear Vividen Paleontology,
I really liked your videos of throwing champion mammals into the dinosaur 🦕 🦖 arena. I have always thought about these scenarios and often come to the same conclusion,that mammalian megafauna should be grateful to asteroid ☄️ that wiped the saurians out. I however 🤔 💭 run into a puzzled thought when it comes to hominids - us humans. You are a well established TH-camr with the resources and platform to work out that scenario. I am sure that there are many who would like to see how humans fare against dinosaurs. Of course the Jurassic Park franchise has shown how modern humans would fare against them but what I want to see is how other people in history would hold up against these monsters. A few candidates from my side would be, austropithecus, first homo sapiens - the out of Africa 🌍 guys , neanderthals, ancient civilizations like Rome or Greece 🏛, Native Americans, India 🇮🇳, Colonial European powers like musket and cannon era and Wild West American frontier.
Thank you for your reading my comment in a ocean of replies. You already have the knowledge of dinosaurs, it might or not take a little research to find out about our human ancestors 😉.
Thank you,
@@palmbeach4825 probably the same outcome as the real life experiment of putting humans with cenozoic life. Man see big reptile, man eat big reptile
@@palmbeach4825 Thank you for your comment! That would be really fun!
Although I would personally give Elasmotherium a 2
Smilodon a 4
Arctodus a 6 at best
&
Columbian Mammoth a 4
Livyatan is the perfect example of: "yea, I could get used to this."
It's such a beast
I wonder How Livyatan would fare In Triassic oceans...Filled with GIant Ichtyosaurs that filled a comparable niche
@@doragonzxI honestly feel like the giant Icthyosaurs would either learn to stay well away from them or shrink in size, if not end up completely decimated by Livyatan to the point where the whales thinking “The hell happened to the food?”
@@joshuamattingly1232 one thing that Vividen also did not mention and would factor into this is that Whale take A really long time to grow and reproduce. Even more than mammoth. The pregancy are escpecially long with toothed whales with orcas taking around 18 month and sperm whale taking 16. and they can only have a single pup while IChtyosaur often are found with 3. Ichtyosaurs would also be far more swift than the bulky Livyatan.In my opinion, Livyatan would not Dominate the oceans as much but Would still be the top Dog. Plus while they are powerfull, they would not risk injuries for nothing. It would be like Orcas and sperm whale, they would avoid each other more than try to figth each other.
@@doragonzx fair enough
“Mmm, monkey.”
-Tyrannosaurus when Gigantopithecus are introduced into Hell Creek
protein
Lol
Mammals: We have Smilodon, Mammoth, Megatherium, etc.
Dinosaurs: We have T. Rex
Tony Stark: We have a carnivorous Hulk
Mammals: you forced our hands. you gave us no choice. release the Leviathan 🐳🐳
Palaeoloxodon destroys 🔥🔥🔥
@@齊天大聖_孫悟空 Alamosaurus:
Bruce, the 50 foot tylosaur:@@timexyemerald6290
so basically the t rex is the bouncer stopping a lot of animals from living comfortably if placed in that time period.
@@nikolagnjatovic1132 you try doing anything well while also worrying about a 9-10 plus ton murder chicken with teeth and jaws that can explode not only you but every bone in your body. But that aside, part of me does wonder if the Mammoths would develop newer behaviors to combat T-Rex in the future, like maybe adult males stick to smaller herds led by the eldest of the group or males stay within herds instead of going solo, maybe they get more aggressive and basically try to psyche out the T-Rex by ‘Leeroy Jenkins’ charging them the first chance they can and trample them. Maybe their tusks rearrange into more defensive/offensive tools.
@@joshuamattingly1232 If they survive long enough and adapt i would think they either become bigger, or smaller depending if they find a succesful way of avoiding predation, but yeah socialization would be their best bet against t-rexes.
@@joshuamattingly1232 there is indeed a good chance that mammoths would indeed adapt to Tyrannosaurus predation, though I'd imagine their population would already be heavily reduced. In that scenario, mammoths would probably need a much higher and faster reproductive rate to maintain a stable population, whilst also dealing with all the ways Tyrannosaurus would potentially adapt to their defensive behaviors in turn.
"hey buddy, i'm gonna hafta checkya weight"
@@oliyes406 xD
We need Mega Ichthyosaurs put in cenosoic Ocean with Megalodon, Livyatan and Otodus Chubutensis.
Ichthyotitan vs Megalodon would be insane
It would be pretty cool! Megalodon is definitely built more for combat and predation of extremely large prey, but Ichthyotitan may turn out to be quite a beast itself if we find more material.
i ve heard the absolute high ball for ichtyotitan being around 40meters in length and ~300 tonnes, since the fossil found is theorised to be a juvenile, and even then that would be around 25 meters in length. it would be really interesting
Ice Age Sloths are known to rizz single Mother Tyrannosaurus, so I’d increase their survival score by a point or two
Brilliant
That's foul💀💀
Green turret
Thats diabolical
You're rude.........y
So while all the land critters are fighting for their lives against a metric fuckton of threats,
Livyatan and Perucetus are living the good life, feeding on whatever the hell they want, and not having to worry about attacks from anything larger than them.
Giant cetaceans are very hard to deal with!
@TheVividen am I crazy, or are mosasaurids that grew up to 50-60 feet in length? If so, wouldn't that make them some level of competition for both whales?
@@DoomRulzweight and length are 2 different things.
The 50-60 ft Mosasaurs had long slender bodies, and topped out at about 15 tonnes in mass. Livyatan would have destroyed them.
@@DoomRulzcomparable in length does not make them a threat, the longest snake( not boas and constrictors) are the same size as a croc and you know they will get eaten in a single bite, a liviyatan weighting as much as more than 5 moasaurus, and mosasaurus weren’t really that build for 1vs1 neither
Always the T-rex is the biggest obstacle. In other places in the world during the late Cretaceous there were not so many mega theropods comparable to T-Rex in size, certainly Cenozoic animals would have had more chances.
T. rex is an absolute monster
Not so many? What mammalian actually was comparable to trex size in the first place? Even the biggest of sloths were topped at 5 tones max, no where near the biggest rec
@@NguyenQuang-tm3ouPaleoloxodon.
I loved this series! I know how long it took to make these videos, and I understand why you’d choose not to continue this series, but other installments with more creatures would be great! Maybe to simplify things, it could be focusing on a single type of mammal surviving in Hell Creek or some other Mesozoic habitat. Creatures like the American Lion, Paleoloxodon, and Megistotherium would be great picks.
I'm definitely going to continue the Megatheropods in the Cenozoic series! I'll probably also do more Thrive or Eaten Alive but on a smaller scale like you mentioned. Doing ten animals in a single video is a lot of work!
@@TheVividen These 10-at-a-time ones have been rad, but to paraphrase a common video game saying, I have no problem w/shorter videos that come out more regularly and result in less intensive work for yourself.
@@TheVividenThat all sounds great! Smaller videos ranging from 1 to 3 creatures would be perfect. They could have themes, with carnivores, herbivores, and marine mammals all having their own smaller, simplified videos. Maybe even some Cenozoic birds and reptiles could make into a Thrive or Eaten Alive video.
I feel that one thing to mention about the Wooly Rhino is that it's eye sight was probably not very good, while having a pretty good sense of smell. So a determined Tyrannosaurus Rex could easily exploit this weakness, especially at night (unless the rhino got whiff of the stench the megatheropod must've had).
This edition is top notch, great video Vividen.
Thank you!
Another epic video
Congrats on finally finishing the trilogy! These kinds of videos are not only unique but also fun to watch, and I wish you the best of luck on your future videos.
It was so cool to finally get to see the finale as I ate my breakfast this morning!! Once again I can't thank you enough for making this series on my request :)
I'm glad and agreed with Smilodon scraping out a living along the Arctodus and Daeodon as you said regarding the latter two generalists are the most successful
The Columbian mammoth and Paraceratherium unfortunately did/would suffer from casualties to predation as you said although I do think a hard neck whack from a Paraceratherium might help it although I can imagine them loosing a tail in a hunt at the minimum sadly. And the mammoths well strength in numbers so maybe bull males would form coalitions more frequently to the risk of Tyrannosaurus? But overall I was happy with the Columbian mammoth's chances they oddly seem to do better in the late Cretaceous then they did the Jurassic.
As for Megatherium, I believe they have armour underneath their skin but that obviously wouldn't stop a T.rex bite so sadly I think they'd either succumb to predation or maybe they'd shrink dramatically to not be noticeable??
The whales domination of the western interior seaway surprises me because I thought Tylosaurus or Mosasaurus would be at least dangers to individuals but maybe the danger posed by them would be too great to consider viable meals.
A hard neck whack from a Paraceratherium would indeed help, but you do realize that is basically just bringing its most vulnerable vital spot closer to Tyrannosaurus's jaws, right? That's a very risky defense strategy in my opinion, and to put it bluntly it would likely only work once in every hundreds of times, and even then it would hardly do any critical damage to a Tyrannosaurus.
@@jkjk7423 Well yeah it is risky. I wasn't say that would be an immediate winning move for the Paraceratherium but more it could maybe stun the T.rex briefly depending on the size of the two individuals? It would be brief though if it was on the head.
Aside from neck whacks and kicks along with shoulder barges obviously that's the only way they could defend themselves, they'd unfortunately still be at a disadvantage along with their extremely slow rate of reproduction and gestation times including how long it might take to give birth as well as the time needed for the baby to reach adulthood.
They might not do well or if they did cling on it would be in low population numbers maybe in areas away from T.rex territory but who knows? Maybe they'd develop a group defence which would be useful if the Columbian mammoths might do a similar defense strategy perhaps the giant hornless rhinos might band together for mutual defence?? Females would probably be more likely to do that I guess
Should have included simbakubwa and straight tusk elephants.
They're both amazing animals. Perhaps in a future video!
Simbakubwa is dubious and not well-researched at all. its weight gets thrown around a lot due it suffering from bad size estimation methods. the highly dubios size estimations of 1ton+ estimations are from estimating their size from Felids witch is stupid and flawed method. The Simbakubwa is a Hyenadont which is notorious for their massive skull to body size among other animals, but to estimate their size with Felids that has one of the most smallest of head to body ratio is bound to make extremely hyper inflated size estimate.
the real Simbakubwa is actually around 400kg( it is made by basing Simbakubwa with its closest relatives Hyenodents to estimate its real closes size estimation). it's not even the largest of the hyenodents. that goes to Mighty Megistotherium.
Love your content vividen, keep up the good work.
Ok, fine, Perucetus was okay to have in this video, as it did have a better chance than I expected. This was a nice video, but I did wish 2 things: 1) That you didn’t feel like you needed to rush out this video (if anything, imo, I would’ve been okay with waiting if it meant that the resulting video would’ve been worth it. Quality over quantity, as they say.) And 2) that more newcomers were added rather than just one at a time. (With that said, when this concept does return to the channel, I would love to see the “left-behind-ers” (the mammals from the Triassic and Jurassic episodes that never got a chance to shine in the Jurassic Episode (for the Triassic ones) or in this one, the Cretaceous Episode (For the Triassic and Jurassic ones) get a chance to shine.) Can’t wait for the next video of Megatheropods in the Cenozoic (All will be great, but I am excited for each for different reasons: South America because it will feel most like the Mesozoic (Also, given its proximity to Antarctica, it could be worth tackling Antarctica in that episode as well as there wouldn’t be another time or opportunity to do so, imo. Not to mention the fossil material and environments.), Europe because of its unique and fluctuating ecosystem throughout the Cenozoic, Asia because it had the Cenozoic’s biggest heavyweight mammal contenders (plus, the Battlecruiser tier would probably just have Tarbosaurus and Zhuchengtyrannus, but I’m not sure), and Australia because of its unique fauna for both teams, as well as the environment in the Cenozoic, and the earliest “human-made extinction” on any continent in the Pleistocene), as well as the upcoming video on if Megalodon can survive on 4546B, a.k.a. the planet from Subnautica.
This is the ultimate clash of the Titans battle between mammalian megafauna and mezazoic might.
Tbh the only mammals that compare to the Mesozoic are the marine ones,I mean the largest terrestrial animal was literally a dinosaur on both sides.
15:56
But as Goji Center phrased it, if any proboscidean was to enter Late Cretaceous North America, it would have to be Palaeoloxodon namadicus, antiquus, or recki.
Thrive or eaten alive: Hell.Creek edition!
Man this was amazing. I love the improvent in terms of editing and the selection of animals for the video is very cool.
It looks like Livyatan will rule with an iron fin once again!
A very solid h^2/10 to finish the series
Also the Seablimp Perucetus FINALLY gets a great score
Perucetus our boi!
s there a possibility that you could make a video about the Cretaceous predators of South America in the Cenozoic period, or the North American predators that migrated south from your previous video? If not that's alright
That is the plan! South America is probably the next continent I'll cover
I think one thing in bull mammoth’s favor are bachelor herds. While not always the case, bulls of different ages will often group together and the elders will act as teachers. Perhaps if they do form a stable population then some of these bachelor herds could exchange techniques to avoid tyrannosaurus.
Also fossil evidence shows woolly mammoths may have used their tusks as clubs as shown by damages on the shoulder bone, and this likely applies to the Columbian relatives. While they likely weren’t as devastating as some of the other weaponry from the dinosaur world, they could still do some solid damage and would be worth avoiding.
You are my favorite youtuber.
Awesome video as always man!!! Nice work!
YAY ANOTHER ONE!
I'm sorry it's taken so long haha. These episodes are huge time sinks but they're fun!
@TheVividen They're worth it, though. These "Could they survive" videos are my favorite type of sepc evo videos other than alien planets. I've been watching yours and Madly Mesozoic's videos like crazy
@@Misto_deVito6009 me to both are goated
What a lovely journey it was, please keep on by bringing Dinosaurs to the age of mammals.
I also love how MadlyMesozoic presented paths some of these megafauna would go through already!
Well, with modern animals, but still…
0:55 that’s not an angiosperm. Ephedra is a genus of gymnosperms, specifically in the order Gnetales which is most closely related to the Pinales, the true pine trees (which only includes the genus Pinus and doesn’t include other gymnosperms such as cypresses, araucarias, yews etc.)
I believe that of the large megaherbivores of the Cenozoic, the ones that would have the greatest chance would be those that lived in the Paleocene, Eocene and Oligocene. Temperatures were warmer than today, very similar to the Cretaceous, these animals ate more of shrubs and leaves on trees, which would have been abundant in the Cretaceous. Predators at that time were also huge, they could occupy niches of medium-sized predators. Paleogene mammals weren't as intelligent, and carnivores weren't as advanced and specialized. But because they lived in a world more similar to that of the Cretaceous, perhaps they could do better than animals from the Neogene and Quartenary
Excellent thoughts!
Such creative videos you’ve on this channel. Just subscribed!
The long awaited finale to this series. And it delivers!!
I absolutely love that the medium generalists thrives, its why survival is about the fittest, not the strongest. Although I find it funny that Perucetus and Livyatan are just dominating their ecosystem. I think the only remote challenge a Livyatan woudl find is the Mosasaurus since they were comparable in length, but definitely not in weight. I’d say a battle between a Livyatan vs a large Mosasaurus would be like a Sperm whale vs a even larger Colossal squid, but it would still heavily favor the whale.
Very excited for this one. Been waiting months
I love your vids so much
You are my fav youtuber
Found U lol
@@C_Saharicus hi:)
Thank you!
@@Mapusaurus.roseae. omg Vividen commented on Ur comment :o
Great work and sound conclusions. To my understanding burrowing and omnivory have only been suggested for mylodonts, a different clade of ground sloth, so Megatherium wouldn't have either advantage. Love me some big sloths but I imagine it would have a hard time. Good points on rate of reproduction. Imagine that's going to be a huge mark against really big mammals even accounting for greater parental care. Well done!
These videos are super interesting and very very well done. Please make more ‘could X survive in Y’ videos!! You gained a new subscriber ☺️
quick note, the image of didelphodon is from path of titans and not the ark website! love the video!
I love that Daeodon’s and T-Rex’s dynamic is literally Jogo and Sukuna.
“Stand proud, you were strong”
Thank you for the work you do 🙏🏼
On land, wild boar would have a chance. They breed rapidly (faster than a dinosaur can lay eggs), adapt to almost any environment, and are true omnivores. They would probably be eaten in large numbers by predatory dinosaurs but they are very fast and live in large groups so there would always be enough to reestablish the population.
Large aquatic mammals would do much better in water.
Yeah I agree, they’re super invasive.
It's never a good idea to bet against pigs!
Another incredible 'what if?' video!
Remember Smilodon likely lived in groups based on individuals we have found that survived crippling injuries for years afterward. If Smilodon had group sizes comparable to lions and wolves, that's a dozen big cats enough to make even juvenile Rex hesitate though wouldn't matter to an adult of course.
incredible work, please make more of this
this was so facinating
Great video, I would love to hear your take on how the Palaeoloxodon Namadicus would fair in the cretaceous.
I do have a question though. Throughout the series previously the prehistoric mammals were placed in different places around the world where they originally lived but that did not happen this time
Can I ask why you decided to place them all in Hell Creek?? Not that I'm complaining by any means just was curious I certainly wouldn't complain about getting to see my favourite dinosaur species of them all ever since I was younger to this day (T.rex) going toe to toe with the towering Paraceratherium, the steadfast Columbian mammoth or even giving a confused sniff at a Smilodon haha
As for the spin off series you mentioned with theropods in the Cenozoic I have loved that too!! Although now this is over as stated before I do wonder how certain non mammals would fare throughout the Mesozoic?
Kelenken the giant terror bird, Megalania, Purussaurus , Dimetrodon, Inostrancevia, Lisowicia , Argentavis, Titanoboa etc oh and Megalodon the giant shark? 🤔
Hi Josh! I'm so glad you liked it! I decided to put them in Hell Creek this time because I'm starting my Master's soon, and I knew I wouldn't have the time to do another level of research on the Cretaceous equivalents of the mammals' Cenozoic environments. That adds even more time to the video production that I knew I didn't have. But thank you for suggesting this series. It's been a blast!
@@TheVividen That's understandable! I hope your masters goes well :) I do hope in the future you might decide to return to this series someday
Perhaps there could always be a remake episode if you ever felt like it of course or perhaps as stated a spin off series at some point
I can tell someone else made the video, and with it come some perks and some strange moments. You noticed some, and the editing is very smooth so credit to your assistant, but it is a little weird to see JP rexes and hairy ground sloths when you're talking about it being hairless.
Hope the video still does well though, and I wanna try out your software it seems better than the one I'm using.
Adult t Rex: okay we will wait and ambush then eat togheter
Teen t Rex: yeah pal better run them pockets
Great video and well worth the wait! That being said, kinda sad that you didn't stick to your previous 2 scenarios where each creature was dropped in the area's mesozoic equivalent. So smilodon being in Triassic/Jurassic South America but suddenly apperaing in Creatcous North America threw me for a loop
Great video.
PLEASE do more thrive or eaten alive videos there basically the exact scenarios I think of when I'm bored in class
Keep up the great work!😁
I have questions do you think the alamosaurus is in hell creek too ?
Hope you remember me I'm your big fan since 1k sub
As far as I'm aware there's no evidence for Alamosaurus in Hell Creek, but perhaps in other areas it may have coexisted with Tyrannosaurus! We'll have to wait and see...
@@TheVividen I want to see the elephant react at sauropod
@@TheVividenthe fact is another meaning for cretaceous is earth hell ? Right also hope Brazilian giant theropod here....
i await the day palaeoloxodon namadicus is brought up in one of your time travelling mammal involved videos
Peak video good sir
Thank you!
@@TheVividen I think u should make a similar video to this but potentially with carboniferous era animals (atleast if we ignore the oxygen problem)
I’m pretty sure that the swipe of a short face bear wouldn’t even heard an adult tyrannosaurus
Probably like getting swiped by a cat
@@Adolphus_of-bysantanium same thing the swipes of a cat won’t even hurt tyrannosaur
yeah Tyrannosaurus is too big too powerful for a short faced bear to handle megatheropods like Tyrannosaurus make large mammalian land carnivores look hopeless dinosaurs are very OP (overpowered)
Perucetus’ biggest problem in this scenario might actually be Livyatan.
And Livyatan’s biggest challenge might be the same one that Orca would face in the Mesozoic. They might decimate the local ecosystems to such a degree that they run out of food.
Good video
11:03 Sues head is way smaller than on this picture. I think the skull is 1.5 metres long and this isnt show on this picture very well. The Dimensions looks gigantic😅. And it would mean that sues head is longer than a human.😂
Loved the video!
I'm really glad you liked it!
8:27 Great now I have idea or thought (even tho it’s very unlikely to happen Realistically) of a T-rex seeing a Livyatan in the water and it staring back at it (and theirs my young mind making the said Livy do a Free Willy to a T-rex (except grabbing it via mouth) 9:10 for the Perucetus Colossus in the other is watching a trex swim or maybe a sauropod (perchance or not) from one island to another while eating and doing its own thing. (Sorry for this weird or awkward comment I just want to say something about that after I saw this video)
Not to mention that Livyatan would potentially hunt Tusoteuthis and Parapuzosia much like sperm whales hunt giant squid.
the only problem i see with livyatan is that...everything its eating...can bite back...sure everything else is smaller than it either in overall size or just mass but when it comes to it nothing is going to die without a fight...and the cretaceous reptiles have some good bark to go along with their bite...mosasaur's in particular had astonishing bites with a wider gap...i would have thought would give them special privilege in eating livyatan...at least specimens such as tylosaurus, prognathodon and the ever famous mosasurus itself...all reaching the similar lengths of 12-15 meters or the speculated 18 meter giants (for mosa at least)...i would argue that a giant whale would be at a disadvantage as far as prey acquisition goes due to all prey items being much sleeker and more agile than the prey it is used to...as well as defense if a mosasaur was to spot a whale unawares...lacking the reaction time to either prepare for defense or to launch a desperate counter attack ...a power house to stack up against its apex equals..but by no means a landslide win...at least in my book
dont think a mosasaurus would try an adult livyathan due to mass disadvantage,in other hand if mosasaurus was faster than liviathan its possible that they dare snatch a calf from his mother since they are not able to defend themself .plus whales reproduce very slowly,meaning infanticide predators can really hit very hard for the specie.
@@sweetypredator1067 idk…mosa usually attacks from below…and animals aren’t usually fussed over mass…size sure…if you can see your foe/prey is larger than you in height or length it usually means they’re bigger than you…but Mosa is comparably the same length as the whale…might not be sport hunting but I wouldn’t hesitate to say that every now and again a whale would fall victim to the mosa…and not just the young or weak…maybe an opportunistic meal…and a hard earned one at that
The thought of a stampede of T. Rexes is frankly scary.
I can't agree with Livyatan getting a 10. If there weren't any apex predator (sharks or marine reptiles) in its size range, it means that large prey items were probably too scarce to sustain it. Adult livyatans would quite possibly starve to death. I'm not saying that it would surely fail. Intelligence and echolocation might turn it into a succesful generalist predator, able to find large ammonites where a mosasaur can't, therefore allowing it to survive despite its enormous food requirement. But I would definitely not give it a 10, maybe a 3 or 4.
Despite your dinosaur bias, it was an enjoyable video.
Maybe these could make for interesting future video's
4. Can Koolasuchus survive the Amazon rain forest?
3. Can Deinocheirus survive modern day Africa?
2. How long can the Deathclaw (Fallout) survive Peter Jackson's Skull Island?
1. Can the Vastatosaurus Rex (Peter Jackson's King Kong) survive Jurassic Park/World?
Yes
Yes
I don't know xd
Yes
I definitely want to do a Jurassic/Skull Island video at some point!
Look forward to this video. Mike
Given your knowledge and also how recent this video was I want thou opinion on two things out of curiosity. If not anyone else who reads this and wants to comment. Answer either or and as you want lol.
1: How do you think Spinosaurus would fair in modern day africa [excluding humans, just the environment outside of them]. Most especially against things like say hippos? My friends joke argue about this a little bit and especially about the later against the foolishly large mammal. Would Spinosaurs dominate the riverways [and in course hippos] or would the waterways [hippos] dominate them?
2: How large of an impact say would giant pterosaurs [Azhdarchids more or less] would have on most mammalian predators? How would a modern day look if somehow around 2 ish million years ago a bunch of large pterosaurs entered the scene?
Either way extremely fun video and honestly really fun as someone who's a little obsessed with speculative/what if ecosystems.
Interesting questions! I'd say that Spinosaurus would do pretty decently in modern day Africa, but not dominate due to the lack of large fish compared to where it's from. Hippos are certainly formidable animals, but they wouldn't fare well in a one-on-one against a theropod that could push 7.5 tonnes. The biggest issue would be adapting to eating mammals rather than fish.
As for the azhdarchids...my initial thought is that their young would struggle given small mammalian predators and competition with birds, but neither of those issues stopped them from succeeding in the Late Cretaceous. There would certainly be no shortage of food items, and they'd be large enough that most animals wouldn't dare mess with them.
@@TheVividen Fairrrr enoughhhh
Livyatan chat log: Double Kill, Triple kill, Killing spree, Killtacular☠️☠️
Would you do a reverse video with non-avian dinosaurs and/or other mesozoic reptiles in the Pleistocene, either in La Brea or South Dakota? (Ironic and poetic given that was part of Hell Creek's distribution)
Mammoths should do quite well
The weather would be way too hot though, but yeah I think the hairless ones would do okay ish
Still it would be better if they evolved better tusks,the males also starting living i herds and better team work
Honestly, the only animals that what survivors deaodon and that’s pretty much it I bet a smaller juvenile Tyrannosaurus would be on the menu triceratops calf, but the adult Tyrannosaurus would be its worst nightmare
How about if modern day waterfowl like ducks or geese lived in the Mesozoic?
Yo bro can i ask where do you get all the information on size estimates and other stuff and new paleo news ?
A new era for this channel... The Vivizoic
Marked stratigraphically by entirely unnecessary but extraordinarily fun speculations!
Love these videos! But I have a question. Many predatory mamals won't hesitate to demolish the nests of ground-laying animals. This is a big reason for why the Terror Bird went extinct... so the thought occurs to me that if a mammal can survive marginally well, would it gain the upper hand over time?
Great video, take care, my friend!!!
Terror birds didnt went extinct for competition or mammals stealing their eggs, they were over long before they crossed with big mammal predators it was in fact climate change that finished the big birds.
They didnt went outcompeted or suffered greatly for other mammals stealing their eggs, just like any crocodile or hell even big flightless birds dont get their number shredded because of that.
That’s not a reason terror birds went extinct. Titanis evolved in North America alongside cats and then proceeded to reign as an apex predator for 3 million years. Additionally, the majority of archosaurs, dinosaurs included, were likely good parents. No mammal is going to attempt to raid the nest of something that can squish them like an ant.
New sub
Yesterday was me birthday
Arctodus:*standing up to a T-Rex* I'm gonna beat your butt tiny arms! And then I'm gonna wear your crown!
T-Rex:That was weird. *bites it in half*
Jokes aside I'm glad the bear just kinda gets to do what he wants. Also does anyone remember that old illustration that had a Bear face a T-Rex and they said the Bear would win cause T-Rex was slow and stupid? Jokes on them XD
Nice artwork
Father has provided
I mean, I do believe that a Columbian mammoth bull would probably just stay in its ground and try to make it self look bigger, and make terrifying noises to scare away a Tyrannosaurus
If Mammoths could survive for a while, I would very much imagine they'd evolve to form herds including the Bulls and that their tusks would become significantly more adapted for combat and piercing.
still a good vid
18:50
Three things:
1. Its reproductive rate.
2. No visible weapons.
3. The local predators, like T rex.
How do you edit your videos?
Do you think the next episode will cover transitional species like you mentioned before? I think that would be a great episode over a topic that doesn't get covered nearly enough.
"Generalists are the bane of extinctions."
*- TheVividen*
Livyatan: Wow this easy! How you guys doing.
*Every single mammal struggling against Tyrannosaurus, Ankylosaurus and Triceratops: CHANGE IT BACK OH GOD!*
0:00
Palaeoloxodon namadicus vs. Tyrannosaurus rex
Pala wins..
@@pierre-samuelroux9364depende b:
@@luzvazquezhernandez2913 not really
@@luzvazquezhernandez2913 pala can grab trex with it trunk and throw it or strangke it,gore with tusks throw it around ofc trex can do few things but not as much so it more 95/20 for pala on majority
I think for the herbivores that feed on grass, such as Elasmotherium, this would be a very difficult transition. Most modern mammals completely avoid ferns, cycads, and ginkgoes that have persisted in the environment past the mesozoic. Most modern relatives of these plants have toxic phytochemicals that discourage herbivory. Maybe if grass was unavailable then these mammals could survive on ferns and cycads, but I strongly doubt it.
16:27 looks like it’s just going “damn…I’m cooked”
I think your underestimating megatherium. Ground sloths already lived with giant archosaur predators and even outlasted them such as the Terror birds and sebecids. They also are less warm blooded than most placentals meaning adapting to a warm climate wouldn’t be that hard.
Ornithomimus with a sprained ankle? You sir, just gave me quite a laugh.😂
Livyatan rules, you should make a series "Could the Mesozoic survive Megalodon?" where you would tell how easy would Megalodon mess up the ocens of that time and how things could reorganizea afterwards
Triassic oceans are gonna be a challenge for meg
@@kilianteni7884 why exactly?
@@DJuuJ Because of Giant Ichthyosaurs
@@kilianteni7884 but those weren't built like Megalodon, they probably feed on way smaller prey than them like molluscs and smaller marine vertebrates, they would mercilessly attacked by Meg
@@DJuuJ Himalayasaurus was a full on macropredator and for the Real giants like Aust colossus we dont know but if Aust colossus was like a giant Himalayasaurus than he would easily kill a megalodon.
I think you should have used the largest Palaeoloxodon species instead of the Columbian Mammoths. Have you seen Goji Center video about that?
Daeodon no matter how it's drawn always reminds me of something you'd see in star wars.
dinosaurs are cool :)
I wonder if the Mosasaurus Hoffmani would survive in the Late Oligocene or Early Miocene epoch ocean? 🤔
Next time can you do the Candeleros formation about 99.6 to 97 million years ago