It's amazing, many Theropods rivaled or even surpassed modern elephants in weight, yet they were still dwarfed by many species of Sauropods. Between the Dinosaurs on land, Pterosaurs in the air, and the massive marine reptiles in the oceans the Mesozoic truly was a world of giants.
Giga vs Trex is a rivalry that predates even jp3, back to the 90s. Charcharodontosaurs were definitely a family of elites, so many make it to the megatheropods list. It’s only fitting one of them can rival the king of dinosaurs
Carcharodontosaurs on average are head and shoulders above tyrannosaurs and spinosaurs. I conducted a literature review for my Comparative Vertebrate Studies course (using only peer-reviewed sources, so they ran on the low side) that resulted in an average tyrannosaur mass of 2875 kg, a spinosaur average of 2804 kg, and a carcharodontosaur mass of 3434 kg.
@@TheVividen without a doubt as a family they were the alpha predators. Even when they had competitors, I’ll argue they almost always came out on top given their wide range and time they ruled
Carcharodontosaurs have the highest number of supergigantic members compared to the rest of the other theropod families. Acro, mapu, gig, carchar, tyranno all exceed 6 tonnes compared to tyrannosaurids where only a single member does so!
@@surgeonsergio6839 makes you wonder what kind of War-field Rex lived in for it to be such an anomaly in its family. Nature demanded more than greatness in that situation
It's funny how movies actually undersell how powerful and agile these predators were. Like Rexy from JP/JW is cool but think about how much scarier she'd be if you account for the fact that T.Rexes are relatively highly intelligent and have eyesight superior to a Hawks. All while being larger than an a full grown Elephant. Edit: Also. These are just the Megatheropods that were discovered. Looking at the size range of modern animals, it's likely that there were even bigger specimens out there. Either of already known predators or some unknown species altogether.
@@TheVividen Exactly! I see so many ppl on TikTok talk about how the movie monsters are "soooo much cooler" than irl animals and honestly I don't think that could be further from the truth. Looking at some injured fossil specimens, we see Rexes being capable of surviving even with most of their tail missing. Like that's not just a glass cannon animal, that's a BEAST. It took millions of years for nature to sculpt a monster like that and goddamn would it be beautiful to see one. Also it's like 100% certain the real dinosaurs weren't limited to movement based bs eyesight too.
Well, back in 1993 they didn´t knew as much as we know now about the Rex, actually Rexy was very much updated to the time, except for eyesight and movies do have to follow on continuity, so they can´t just make Rexy updated to modern times
@@antoniocenteno1483 Thanks for saying it and mentioning the continuity as well. JP1 was very accurate safe for its 𝘵𝘪𝘮𝘦 save for a handful but big issues like Dilophosaurus(All Speilberg), relying on Jack Horner- Utahraptors-sized raptors and naming them Velociraptor, and the aforementioned bad eye-sight for the T-rex.
Since a kid I remember T. rex constantly being dethroned as largest Mega Theropod but to know it’s now possibly bigger than previously thought Is awesome
I am surprised at how over time rex has only become more impressive as an animal. Not only is it the largest land predator ever, it had incredible eyesight. And it had an incredible sense of smell, and it's leg bones suggest it was surprisingly good at running for it's size.
dunkleosteus nerfed, megalodon nerfed, triceratops and ankylosaurus nerfed, spinosaurus… i don’t even know. And Trex being smart as ape, strongest biteforce ever, eyesight making eagles jealous, sense of smell equalling bears and running at about 15-25mph
@@darchandarchan7036the trike was a HUGE tank weight around 12 tons and this animal is the most dangerous herbivore that ever existed, the ankylosaurus was a HUGE armored tank weight around 8/9 tons but probably 11 tons.!!
Pretty awesome that Tyrannosaurus rex remains the largest theropod, and the largest predator to ever walk the Earth. It’s such an amazing success story.
Terrestrial predator yes Now for aquatic predators...... Yeah not even close even some modern marine predators dwarf the rex A K.A toothed whales( no orcas are not a toothed whale just a overgrown dolphin)
@@kristianschuff1723 Technically, orcas are toothed whales, since all dolphins are toothed whales. But yeah what I was saying is that rex is the biggest hunter to walk on land, which is pretty awesome :D
Theropods, pterosaurs, crocodiles, sauropods. These type of animals ended up dominating the mesozoic era. The ones that are currently living in the cenozoic era are crocodiles, and theropods(birds) and they are still diverse. The archosaur family were not dumb when it comes to survival.
Whilst I knew most of why was on this list I never knew that Theri lived along side Dino. Very interesting that two of the largest therapods at the time had meathooks for hands
I kinda have the feeling that back then, Deinocheirus would’ve lived in swampy environments and Therizinosaurus would’ve lived in more inland forest environments, to explain how those two giant Herbivorous or Omnivorous theropods could coexist in the same general area in addition to Tarbosaurus which would’ve probably been more of a generalist which was more likely to adapt to all kinds of habitats within the Nemegt Formation.
I've seen lions and tigers, I know how big they get. I've also seen elephants and the fact these megatheropods were much bigger than adult elephants blows my mind. If any of them were to come into our modern day, they would need to hunt adult elephants just to sustain themselves. After a bull African elephant, a T. rex or a Giga would be like "ok, is there more...?" Non-avian dinosaurs were insane...🤯
Some of these estimates were surprisingly low. I always went with a 9,200kg average Tyrannosaurus. Seeing as Scotty could be 10,600kg to even 11,000kg and Sue being 9,900kg to 10,200kg. As Sue isn't exceptionally large compared to other specimens, I would think the average would only be a tonne off. My reasoning is bad but I saw that Sue was upscaled from 8,400kg to over 9.9 tonnes and Scotty was upscaled from 8,800kg to 10,600kg to 11 tonnes, I just assumed that all the other specimens should get a buff. I used Scotty, Sue, Stan, Trix, AMNH 5027 and the holotype specimen to find an average. I know my reason isn't very backed up, but I like to theorise about Tyrannosaurus, hence my name. Super interesting video!
I agree with you, a tyrannosaurus weighing 9-10 tons looks much better these days, his estimates for giganotosaurus are very high, I always see that giganotosaurus estimates are around 6,500 to 7,800 kg.
@@Cope_Paleontology They are too high, 8.4 Tons was the potential weight for the bigger Giga found of wich we only have the dental record, wereas 6.5-7.8 was the weight of the holotype specimen. Unless he is taking in the bone density studio for wich all theropods "got a boost" but then the Rex should be about 9 tons for the holotype whereas scotty pushed 10 tons. I learned that on this channell lol and now i´m confused.
All of these estimates were using the .97 median density from Larramendi et al. (2020). I didn't use the 2013 Hartman estimates because he redid them in 2020 and got much higher numbers for both Tyrannosaurus and Giganotosaurus.
I'm glad you liked it! Statistically neither Sue nor Scotty would be considered "unusually large" since their masses didn't land more than two standard deviations away from the mean of Tyrannosaurus. I like your approach, too--it's always good to use multiple methods.
@@TheVividen yes, I understood that Sue and Scotty weren't exceptionally large, so the average can't be too many tonnes off their weight. I found an average using the low estimates of: Sue (9,700kg), Scotty (10,400kg), Stan (8,000kg), holotype (8,500kg), Trix (9,500kg), AMNH 5027 (8,300kg) To get an average of 9,067kg I then used conservative estimates: Sue (9,900kg), Scotty (10,600kg), Stan (8,700kg) holotype (9,000kg), Trix (9,800kg), AMNH 5027 (8,800kg) This gave an average of 9467kg Then the semi-high estimates: Sue (10,100kg), Scotty (10,800kg), Stan (8,800kg) holotype (9,100kg), Trix (10,000kg), AMNH 5027 (9,000kg) This gave an average of 9634kg Finally, I used the higer estimates for these specimens: Sue (10,200kg), Scotty (11,000kg), Stan (9,000kg) holotype (9,300kg), Trix (10,100kg), AMNH 5027 (9,100kg) This gave an enormous average of 9784kg. In conclusion I think an average Tyrannosaurus must be over 9000kg.
Love that the Megalosaurs family and Megaraptor family got some love. It is interesting that the Carcharodontosaur family dominates the list tho. Hope a truly giant Abelisaur gets discovered one day.
Idk why but your video, everything about it, from the mic quality, pacing, humor and format has a real nostalgic feeling to it. Something that brings me back to an older time of RU-vid. Never change because you just earned a subscriber
I'm sad that nobody talks about Tyrannotitan that much, despite literally having the name of the "Tyrant Titan" itself, that name is reserved for god like entities and Tyrannotitan deserved its title. its the best carcharodontosaurid right under the goat itself, Giganotosaurus
Interesting way to break things down. I think it's likely that T-Rex went through all of your stages as it grew. With the growing evidence that tyrannosaurs functioned in family groups (small packs, much like modern predatory raptors), the most likely biologically plausible explanation is that, upon attaining full size, T-rex acted less as the primary killer of game....and more to protect that game from smaller predators. The younger tyrants probably did most of the hunting, and then the whole family got to eat their fill, because the mature tyrant was there and nothing in the environment could possibly challenge it. Basically, they had "old man" strength and while they lost their speed....they earned their keep by being able to keep anyone from messing with the kills their younger children took. Then, eventually, a family group would meet up, swap kiddos, reproduce, the older tyrants would die (explaining why t-rex only spent a small amount of time as a full size adult), their kids would take over the two family groups, and rinse and repeat. Everything has to be viewed from the perspective of actual biology. T-Rex, as an adult, was so massively overbuilt that was slow. I would argue that's not because it was a scavenger....but because it had the family job of making sure nobody could move in on it's kids. basically, it's the oldest play in the book. F* about and find out.
That’s not too different from lions. Males usually defend the pride and hunting territory from other predators (especially hyenas), while the lionesses bring home the food. 😼
Looking at Reptiles today none of them seem to have any type of family units, they are loners that only get together during mating time and protect eggs or the young for a short time but will go back to being solitary animals and even prey on their own off spring once their short period of maturity instinct wears off, They will gather in groups not to work together out of any kind of family bonding but because they gather where the prey animals are and will tolerate others of their kind long as they keep their distance or not try to take their kill from them , when they eat on a carcass there is no social order its who ever is aggressive enough to take what they want first , the bigger ones will usually intimidate the younger ones away but are not above killing a smaller one of its kind and eating it if it gets in the way, That's how Crocodiles, Alligators and large lizards like Komodo dragons and Monitors are and also many mammal predators like Bears, Tigers, Wolverines, Which makes me think if a T Rex is a solitary animal as well and doesn't have a permanent family unit, i don't think they had the intelligence to have a pack mentality or complex social structure like wolves or lions
@@bluemouse5039 Except dinosaurs were archosaurs - and that's very different from other reptiles. The two surviving clades from that group are birds, and crocodilians (and, maybe, turtles, jury is still out on that). Those groups all have parental care. Some of them, particularly the ones that directly descend from the dinosaurs (birds) have numerous examples of parental care, family groups, high intelligence, mating for life, protection of young, the list goes on. Given the evidence we have of severely disabled therapods surviving months, or in some cases, years, it's pretty obvious these animals had some kind of social structure. Given that we see the same sort of thing in their direct descendants (birds), I'd say that, if they were not pack hunters, they were at least family hunters.
I’m happy you at the end of the video pointed out the alternative that Giganotosaurus could be smaller than what the evidence shows us, in which, just like your conclusion, our evidence is very much our best guess. I see so many people say “Well, Giganotosaurus could be larger” but the opposite is very much equally as applicable. We don’t really have a quantifiable average for even Tyrannosaurus, let alone something like Giganotosaurus, so the room of improvement or lack of improvement arguments regarding size are statistically applicable all across the board of Theropod genre for “It could get larger” or “It could get smaller”, since these are just fossils. Our evidence is our best bet which we can claim.
That's completely correct. I ran a one-way ANOVA analysis of the average tyrannosaurid, carcharodontosaurid, and spinosaurid mass and got a p-value of .746, indicating that there was nowhere near enough evidence to suggest that the true average masses of any one of those clades was different from the others. We'd need far larger sample sizes for all three groups to confidently say that we have a statistically significant difference between them.
@@TheVividen The body mass differentials may prove in the long run, with more fossil findings, to be somewhat different plus or minus for Gig and Spino, but we have enough Rex fossils to know it won't vary much at all, plus or minus, with additional findings. And in determining the baddest therapod to ever live, it's not all about body size. One of the reasons Rex has, since its discovery, been considered the literal king of carnivorous dinosaurs is because of its teeth size and bite force. We don't need any more fossils of Gig or Spino to know that they are no match for Rex in destructive power in their jaws.
"By the way, would the Giganotosaurus go up,👆 against the late jurassic period herbivore,🥕 dinosaurs,🦕 such as the Apatosaurus, Diplodocus,🦕 Stegosaurus, and Kentrosaurus?"
@@Cosmo-Kramera rex would get torn to shreds by any carchadontosaur a powerful bit is nothing compared to the ability to sever arterys and flesh with little effort
Spinosauridae (Germany) trying to convince the Charcarodontosaurids (Mexico) to fight against the Tyrannosaurids (America): *Yo dudes, the empire’s pretty chill, maybe you could like, join it or something.*
Top 5 largest European megatheropods now 1. French Megalosaurid- 6.3 tonnes 2. Megalosauridae indet- 5.5 tonnes 3. Torvosaurus gurneyi- 5.2 tonnes 4. Metriscanthosaurus indet- 4.2 tonnes 5. 5th one isn't a megatheropod
I love the book that you got some of the artwork for this video from. If you don’t already have it, you should get the book about sauropods from the same authors. It has some of the most beautiful depictions of sauropods I’ve ever seen. They’re unique, colorful, and like the theropod book, it has reconstructions of very lesser known or undiagnostic specimens. It would be awesome to see a video about mega sauropods too since their book has an exhaustive list of every sauropod with cited length and mass estimates. 30 or 35 tons (about the mass of a humpback whale) would be a good place to put the threshold and includes tons of unexpected giants besides just titanosaurs
I think the differences in growth patterns between Meraxes Gigas (and likely most large carcharodontosaurs) and tyrannosaurus is fascinating. Sue was around 27 or so when she died and she was an old tyrannosaurus and fully grown, Meraxes was estimated to have been in its early 50s, and still growing, still a skeletally immature adult.
That is exactly not what I am saying. Especially as Meraxes was sharing its envrioment with the larger Mapusaurus. What I am saying is that whilst tyrannosaurus is big and heavy the large carcharodontosaurs were comparatively ancient. Meraxes was nearly twice the age of the oldest tyrannosaurus specimens we have and not yet fully mature.
7:53 on another note other paleontologist and experts have estimated it to be either slightly smaller or slightly larger, it depends on who’s recon you use. But the higher end just barely scratch’s 8 tonnes, into destroyer class. And if I’m being completely honest given his track history it’s probably gonna change sometime this month😭 But still great video. Subscribed
@@giulialigabue3361 For many years now, Saskatchewan has been the proud home of the world's largest Tyrannosaurus rex. Nicknamed Scotty, this once huge animal used to roam the earth some 66 million years ago. Weighing an estimated 19,555 pounds, the equivalent of four pickup trucks, and measuring nearly 42 feet long.
I think it was explained in Planet Dinosaur (2014) that some enviromental changes in the mid-cretaceus period results in the changes of the fauna, which cause the extinction of the Sauropods (u know, the long-neck giants like Argentinosaurus and Parralititan). And since Carcharodontosaurids preyed on those titans, as their meat supplies die out, so did they.
It's worth learning about the "Cenomanian-Turonian anoxic event" 94 million years ago Global average temperatures then were at least as high or higher than any other time in the Mesozoic
I think regardless of which comes out bigger, T. Rex or giga, the real question is how their weight distributed? Giga when you look at its skeletal structure is a leaner quicker hunter. It looks like it’s built to bleed its prey then finish it when it’s weak. T Rex looks to have been built for a marathon chase leading to a climactic showdown when its prey could no longer run away. It had exceptionally keen vision and smell, and it was obviously built to deal kill in one or two chomps. Even if Giga is found to be larger I think the answer to who would win a straight fight would still go to the T Rex most of the time. It’s built for head on conflict with animals in its weight class. Evidence points to Giga bleeding out large slow animals or catching smaller weaker prey. Both amazing in their own right, but only one gets to wear the belt lol
"By the way, would the Giganotosaurus go up,👆 against the late jurassic period herbivore,🌿 dinosaurs,🦕 such as, the Apatosaurus/Brontosaurus,Diplodocus,🦕 Stegosaurus and Kentrosaurus?"
"By the way, would the late Cretaceous period herbivore,🌿 dinosaurs,🦕 such as, the Triceratops, Iguanodon, Ankylosaurus, and Therizinosaurus, go up,👆 against the late Cretaceous period South american carnivorous,🥩 🌭 🍔 🥓 🐔 🐠 dinosaurs,🦖 such as the Giganotosaurus, and Carnotaurus?"
T-Rex is supreme and all, but the fact that an adult equivalent class Titanosaur would have little to worry about says a lot about how titanic dinosaurs could get. Them sauropods could get up to like 15 Jerrys…
the weights are completly of after the last papers of science, a Trex is now estimate between 10-13 tons and most of the others are also estimated heavier, also did they correct the size of most of them
@8:42 Considering it's name means Giant Southern Lizard, I always pronounce it like Giant. Saying it like Giga just doesn't do it justice. Saying it like Giant really puts emphasis on the fact it was a true Giant.
@@rodrigopinto6676 well yes, i was just saying how its name came to be. It still is a giant, an animal measuring up to 43-45 ft in length is no joke. But its still not the true king. Rex will always be king.
@@rodrigopinto6676 and to say its outdated isn't entirely accurate. Scientists really have no idea. We have such few adult specimens compared to the tyrannosaurus rex. Its just an estimated average.
Can we really stop and think about how useless we are compared to the largest reptiles of today and now scale that up to multiple tons, a head full of swords, and more than likely modern bird level intelligence
A little fun fact i p’ve thought about regarding giga and rex, was running. If you look at rexy and it’s barrel-shaped chest and giant, thick legs, it’s very clear it was a long and slow walker, that endurance hunted like early humans did, while giga is longer, leaner and skinnier, with beefier thighs for fast running to catch up to something four-legged. Just a lil nugget of info
Giga wouldnt need to run much either as their contemporary prey item wouldve mostly been the huge sauropods that roamed its habitat, its anything from the 6-7 tonnes rebbachisaurids like rayososaurus and limaysaurus to the huge titanosaurs like the 18 tonnes andesaurus and the 60+ tonnes unnamed large titanosaur that was recently discovered.
Honestly, after seeing their skeletons side to side it makes me think that current estimates are either being too generous with Giganotosaurus or too conservative with T Rex. Or maybe even both. Between them there doesn't seem to be a difference of just some hundreds of kilograms or just one ton 🤷♂️
I'd say I expected Tarbosaurus to be on this list, as it is generally estimated around 5 tonnes for the large 40-foot adult females. I remember when Mapusaurus was discovered in 2000 it was estimated at 50 feet in length, a figure that was later revised downwards to 41 feet but still extremely large.
there was a very early estimate of a dinosaur that was said to be a relative of Giga that was from Argetina estimated at 48-50 feet and that later was Mapusaurus but its size was revised down to 40-42 feet.
@@monsterzero521 intersting, its strange that this has never been brought up. If this shaft turns out to be true, then Mapusaurus may indeed be the King of The Monsters.
I really like this video because it gives a fair, average weight estimate for each dino, even though with a dino like spinosaurus it's difficult to estimate at this point and time since its body structure keeps changing. Personally I think its weight could range anywhere from 7.5 thousand kilos to potentially over 9000 kg. but artillery tier seems like a good strong place to be though maybe one day it'll join Destroyer Tier
@@rodrigopinto6676 Nope, sorry but that's incorrect, do bears only eat deer and berries? Do sharks only eat fish? If a carnivore finds prey it can hunt when it's hungry it'll hunt it
Nice vid friend🎉🎉🎉🎉🎉🎉🎉. I think my tier list has reference from ur video Destroyer Tier 1. Tyrannosaurus Rex-12.4 m & 8804 kg 2. Tyrannosaurus Mcraeensis-12.1 m & 8602 kg 3. Giganotosaurus Carolinii-13.2 m & 8400 kg Artillery Tier 1. Mapusaurus Roseae-12.29 m & 7486 kg 2. Deinocheirus Mirificus-11.83 m & 7364 kg 3. Tyrannotitan Chubutensis-11.86 m & 7287 kg 4. Saurophaganax Maximus-12.24 m & 7163 kg Knight Tier 1. Spinosaurus Aegyptiacus-13.1 m & 7000 kg 2. Carcharodontosaurus Saharicus-12 m & 6900 kg 3. Acrocanthosaurus Atokensis-11.63 m & 6800 kg
Did you just imply Mapusaurus came before Giganotosaurus? Mapusaurus is known from late cenomanian to early turonian rocks 🤣, so its the other way around.
Comparing modern elephants to megatropod dinosaurs is impressive on both counts. On the one hand, megatropods include carnivorous dinosaurs that were larger and heavier than a current African Elephant, that is really terrifying, an African Elephant is already a huge beast in itself, luckily it is herbivorous, but imagine a more predatory animal bigger than him. On the other hand, we can see how a group of the largest current land animals could be capable of scaring away or defeating a megatropod such as T-rex or Giganotosaurus in a dangerous encounter, Elephants are intelligent, perhaps they would be afraid to see a predator something bigger than them but they know that together they can beat it, a normal adult Tyrannosaurus rex of about 8-9 tons would see a single African Elephant as a good prey, but a herd of them by no means, each of them weighs 6 tons and they are close to their height, the T-rex only outnumbers each one by 2-3 tons, if we have about 6-7 Elephants facing a Tyrannosaurus, the dinosaur would basically be far outclassed in strength, it's just It is a matter of thinking that a Triceratops (the most dangerous natural prey of the T-rex) counts almost as 2 current adult male African Elephants, if a T-rex encounters about 6 Elephants it is like it is facing 3 Triceratops, the best option of the apex predator would be to run away if you don't want to earn a beating.
How about the giant megeraptorid Maip Macrothorax, it lived in south america of the late late cretaceous after giganotosaurus and is considered the queen of dinosaurs.
I love the idea of every large carnivore vs trex, but the fact of the situation is trex could defeat all if it lands a bite on the neck /head of each of the rival carnivores
I’d say it’s bulk would be the biggest advantage over other carnivores, you’re not gonna land a perfect bite against a carnivore that is actively attacking you. That bull makes it an immovable wall, which gives it more opportunities to get that bite in
I do not think that Giganotasaurus was that heavy. The skeleton just looks too gracile to support that weight. When looking at a t-rex skeleton you can see the bulk. Giga looks it was an ectomorph.
Both giga and trex can be above 11t depending the soft tissue reconstruction but giga seems to have the upper hand due reaching those sizes with just 2 specimens in comparison with the dozens of trex ones
Top 5 largest South American megtheropods now 1. Giganotosaurus carolinii- 10.1 tonnes 2. Mapusaurus rosae- 8.4 tonnes 3. Tyrannotitan chubutensis- 7.3 tonnes 4. Meraxes Gigas- 5.7 tonnes 5. 5th one isn't a megatheropod
And this is why the jurassic park movies are wrong. Spinosaurus was not bigger and bulkier than t-Rex as the movie depicts or the giganotosaurus being the biggest. The T- Rex reigns Supreme and also had the strongest bite of any land animal in history.
I can't say much as the paper is still being written and the monograph should, rightfully, get first shot at revealing what it has. But all I can say is keep an eye out of something coming from Oklahoma in the next year or so. A bonebed with some very, very intriguing finds got found that shed a lot of light not only on the social habits and life of a creature, but also its dimensions being well above what was expected of it.
this is such an aspergersy way of describing carnivorous dinosaurs.. compare them to the military.. also don't agree with zhucheng and tarbo weight estimates considering the average height and length of them put it within 2 metres of t rex and they hunted almost the same armed armoured prey. the fact you describe tyrannosaurus as the king and able to "crush metal" displays how much it has a hold on the consciousness and pop culture, and any research and articles are geared towards sating its reputation to the expense of other species getting a proper look in.
I'm a plain person. I just want a Triceratops and Styracasaurus video. And maybe a vid why stegosaurs didn't make it to the Cretaceous, despite having a good defense system like the horn heads and ankylos.
It’s cool that a modern day bull elephant day could still possibly hold its own against some of the smaller megatherapods. Although they’d probably be more inclined to run away and be an easy kill, considering they aren’t used to being hunted by anything even close to their size.
@@majungasaurusaaaa I doubt it. A large triceratops has the defences to actually protect itself against theropods like the forward facing horn and protective kneck frill. Only the large supertuskers would stand a chance against the big theropods.
T Rex did also hunted one sauropod nearly identical in size and weight to Argentinosaurus called Alamosaurus and that animal is measured to 100 ft long and weighed 75-80 tons, while Argentinosaurus was 120 ft long, and weighed 69-75 tons, the weight estimates made alamosaurus larger. but like other megatheropods that hunted sauropods in similar weight classes, they mostly target the younger or weaker individuals.
Thats false, there is no fossil record of trex hunting adult alamosaurus, prob inmature similar size specimens to trex size and alamo isnt even in the top 10 biggest sauropods since the biggest alamo specimen its even below 50 tons meanwhile argent is almost 85 tons.
@@santiagofernandez8551 the Alamosaurus specimens I heard that they were the juveniles, which is why i mention in the later part of the comment that like other megatheropods that hunted other similar sized Titanosaurs, T Rex would mostly target the juveniles even when they hunted in packs, and Alamosaurus actually is the same size as Argentinosaurus, because the the specimens of the Alamosaurus they found were the juveniles, and they believe that adult Alamosaurus can weigh up to 75-80 tons, and also regarding the Argentinosaurus, its weight was reduced to 69-75 tons.
@@notmyrealchannel559 nope thats false, where is the source of that? Lol biggest mature alamo specimen is 43 tons at max, below even dreadnoughtus size, meanwhile argent size had never changed and still 85t at max
im saying this as a Spinosaurus enjoyer lol, so my opinion can be considered biased, but i dont think anyone can say Spinosaurus's size until we at least have a proper adult specimen that we are sure of. i wouldnt be surprised if it was heavier than rex or giga because it spent a lot of time in water. it doesnt really matter but its just a thought. Its still an amazing animal from what we know.
It had denser bones, but its bones were extremely thin and it had an extremely gracile build… it is more than likely not heavier than either of those two, especially as of now.
Fair assessment at the end using Folkes' number crunch for Giganoto. Carcharodontosaurids in general and especially South American Giganotosaurines have been traditionally reconstructed way too gracile. Up until clear into the 2010s, skeletals and 3D models almost always made the dorsum too short, the chest way too narrow, and the skulls too flat. This is where you get some of the almost comically thin "Giga viewed from head-on" images where it turns into 'Flat Stanly'. Compare the Giganotosaurus skull reconstruction most common in the 2000s and early 2010s with that very rhombus-shaped, extra pointy snout with the huge fenestration; to the much stockier, Acrocanthosaurus-like cranium seen nowadays; and you'll see what I mean. Between all of that and some other factors like bulking up the legs appropriately, that accounts for a lot of how Giganotosaurus especially really shot up in body mass over the years. Especially now that more accurate mass metrics like GDI are used when paired with Larramendi et al. (2020)'s work.
@@Saurian25 “is more robust and even wider than some tyrannosaurus specimens” 😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂🙈😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂it’s so funny
Going back and time and seeing an adult T.rex in flesh. I don't think our brains would be able to process the sheer awe-inspiring sight of such an amazing giant predator.
Did notice that the trex estimates were a bit low, average is more around 9.2k KG not 8.7 and maximum around 11k KG while Giga averages at around 7.2k KG and maxes at more around 9.4k KG
@@TaurusSaurus There aren’t really any adult specimen Tyrannosaurs that are in 7 anymore, Most are definitely above 8 as adult with the confirmed fully matured ones so far reaching more around 8-9 tons an average of a large tyrannosaur is around 9.2k KG as mentioned before with 11 being the estimated maximum size without getting into the whole… 15 ton controversy lol
Most of these are outdated. Lets correct these with 2023 theropod size comparison based on the paleo spreadsheet. Btw you've missed many megatheropods. Lets go ' All updated' Tier list 16. Oxalaia - 3,310 kg 15. Edmarka rex- 4,800 kg 14. NHMG 8500( Epanterias )- 5,700 kg 13. Torvosaurus ingens- 5,140 kg 12. Acrocanthosaurus- 6,600 kg 11. Therizinosaurus- 6,664 kg 10. Saurophaganax- 6,740 kg 9. Spinosaurus aegyptiacus- 6,810 kg 8.Sauroniops pachytholus- 7,771kg 7. Spinosaurinae indet- 7,840 kg 6. Tyrannotitan- 8,200 kgs 5. Deinocheirus- 8,410 kg 6. Carcharodontosaurus- 8,450 kg 3. Mapusaurus- 9,120 kg 8:27 the destroyer Tier 2. Tyrannosaurus Rex- 10,450 kg 1. Giganotosaurus carolinii- 10,500 kg
3:53 My favorite dinosaur has it's appreciation day on the same day as my country's Independence Day, lol As for Tyrannotitan, I think the only cooler name out there is Thanatotheristes
Most of these are wrong bud. T rex & Giganotosaurus both are over 10 tons. T rex is 10.45 tons , Giganotosaurus is 10.5 tons. 3rd biggest theropod is Mapusaurus weights 9.12 tons. 4th Carcharodontosaurus is 8.5 tons
never really heard of the edmarka rex, that’s really cool, imagine a creature almost as long as the t. rex or like he said it rivaled it’s size just running at you, and from the looks of it, it seemed agile, thats actually insane to think about and cool at the same time
Considering that saurophaginax has distinct chevrons on its tail I would hazard to guess that whilst it was most likely an allosaur, its not an allosaurus. A septorate genus but close cousin. The thing that pushed me off the fence so to speak was there was the discovery of another species of allosaur getting around the morrison around the same time, information on it is scant as it(a like 85% complete skeleton of an 8.5m animal) was sold at auction in Paris in like 2018, and is presumably in a private collection now(I'd agree with Indiana Jones's sentiment here, as to where it belongs), but having poured over a pdf of the auction brochure I distinctly remember it being described as a relative to allosaurus(and the photos of its skeleton show it was very similar to the allosaurus), but they did not seem to indicate it was an allosaurus. It did not have such distinct tail chevrons as saurophaginax does.
Not sure it's reasonable to include such a massive outlier estimate for Giga at 10T, when there are only 4 other solid estimates that are more consistent and reasonably grouped around the 7.5 - 8T range.- it massively alters the average. Especially when we have the skeletal reconstructions showing how much more gracile (relatively) the Giga was compared to the T-Rex. An estimate suggesting that much smaller frame could carry over a tonne of extra mass compared to the T-Rex seems completely ludicrous to be honest.
A study from 2021 put the max for giganotosaurus at 9.4 tons, with that in mind the 10.4 ton estimate given by dan folkes isn't that much of an outlier.
