It took me several sessions to watch the lecture, but I really enjoyed it. Looking forward to watching your other dinosaur lectures.

Always thought it was more helpful to perceive speciation as a fluid and ongoing process instead of a necessarily fixed state. Terrific lecture. This actually comes up in the reptile hobby often enough as there is a bit of a rift between the pro and anti hybridization crowds. I'm totally pro-hybridization. Heck, we are "hybrids".

Would have loved to ask more about the ecology of its environment. Why is it that T. rex is one of the most common predators in their environments and why we don’t see many different medium to small carnivores where T. rex is present. Were they that specialized and successful that they outcompeted most other predators due to how their specializations throughout their lives? In the Jurassic you could have several different large carnivore species in the same environment with several medium sized and plenty of small carnivores filling other niches.

@Tyrannosaurine

6 ай бұрын

I actually think I can help you out with that. If you want to know Thomas Holtz’s thoughts on that, search “Teen Tyrants In A Gig Ecology” and Thomas Holtz and a whole lecture about exactly what you are asking about is online. Great talk. Enjoy.

@maple22moose44

4 ай бұрын

Tyrannosaurus changed a lot in its morphology as it grew, and likely filled the mid-sized theropod niche as juveniles

There's also Tyrannosaurus macraensis.

The "3 species of tyrant" bit really gets at something. People want to name things - make their mark, so to speak. Given that we live on average 80 years, trying to define an animal that, in some form, existed for 25 thousand times that long (assuming T-rex lasted 2 million years)........obviously there's going to be some change there. I know that cladistics is the "best fit" solution we have for understanding what we discover, and that's very useful for describing things. I wish more researchers and scientists would point out that every little thing we get is just a snapshot, with millions of years before and after missing. People can't even agree on speciation with extant animals, within their own lifetime. Maybe we need a different framework for extinct animals? It just seems somewhat broken. Why are we expending brain-power trying to differentiate slow species progression.....instead of evaluating, over time, with the snapshots we get, what was successful, what failed, what lasted, what didn't? I guess I know the answer: You don't get to name anything if you do research like that. Still, I'd love to see it.

awesome information

Hi! What is your understanding of why the american museum of natural history dumped tons of mammoth bones in the New York east river?

@MarylandNature

3 ай бұрын

I heard that too. Not sure though. If you find out let me know

@rodrigopinto6676

2 ай бұрын

​​@@MarylandNatureTyrannosaurus rex E.D cope and Bertha they are even bigger than Scotty and Sue.!

Ross?

Babby T rex is soooo cute!

Is there a correlation between femur size and cursoriality in mega-theropods? Orrrrr is the hypothesis based solely on the arctometatarsalian condition?

@thomasrichardholtz9031

6 ай бұрын

Femur size increases close to body size, so it is the least informative part of this. However, the proportionately long tibia length, and much more so the proportionately long metatarsus, the proportionately slender nature of the of the metatarsus, the arctometatarsalian condition, and the proportionately expanded size of the ilium all point to tyrannosaurids (and independently, ornithomimids and alvarezsaurids, and to a lesser degree troodontids and caenagnathids) being more cursorial than other theropods of their respective body sizes.

@symphonyofshred

5 ай бұрын

@@thomasrichardholtz9031 wow! Thank you.

@eybaza6018

Ай бұрын

@@thomasrichardholtz9031 Tyrannosaurus has proportionally longer legs than the far smaller Allosaurus if memory serves.It was definitely faster than most of it's prey

That also works with Bears. If Chased you need not be faster than the Bear, just faster than whoever you're with

❤

largest gigantosaurus 5.5-6 tall 😏😏😏 i am form south america giant Sauropodomorpha greater Argentinosaurus huinculensis

@dogbird2252

Жыл бұрын

You are absolutely wrong

@rodrigoestebanquierofiguer9658

Жыл бұрын

@@dogbird2252 STUDYING MEGACARNIVORES TEETH 🦖🔬 🔬Carcharodontosaurid teeth are being analyzed under ALUAR's SEM (Scanning Electron Microscope). This instrument allows to observe objects at the microscopic level and obtain detailed images in high resolution. you stupid don't know and the study we'll see that you don't know when you surprise me I cry

@rodrigoestebanquierofiguer9658

Жыл бұрын

@@dogbird2252 he teeth of these giant dinosaurs were discovered in the same site where the fossils of Patagotitan, one of the largest land creatures to walk the planet, were found. For this reason, the study of these teeth can also help us understand what the food chains were like among titans millions of years ago.

@rodrigoestebanquierofiguer9658

Жыл бұрын

@@dogbird2252 Ulughbegsaurus uzbekistanensis carchadotosaurus discovered that ASIA 90 million years Ulughbegsaurus carcha 8-10 meter giant Timurlengia euotica t rex 4 meters small thanks ASIA INFORMATION He discovered that he has a giant carchadotosaurus that you don't know anything about, the giganotosaurus and carchadotosaurus are all GIANT because you don't know how to study stupid, go home to sleep

@eybaza6018

Ай бұрын

@@rodrigoestebanquierofiguer9658 Well yes,but it's very hard to get a reliable size estimate from teeth.Tyrannosaurus is still the biggest reliably measured theropod of all time,average specimens were smaller than some Carcharodontosaurs but Scotty(and perhaps E.D Cope ,,Copium rex") are heaviest overall

the maximum speed of Giganotosaurus, on an ideal surface, would have been up to 15 meters per second, about 50 kilometers per hour

@thomasrichardholtz9031

Жыл бұрын

Sadly, we do not know these things. As I discussed, we actually lack the ability to accurately calculate the speed of even living animals from their morphology alone.

@rodrigoestebanquierofiguer9658

Жыл бұрын

@@thomasrichardholtz9031 You shut up and he doesn't know anything, the biggest giganotosaurus to the truth history of life, Asia discovered ulughbegsaurus uzbekistanensis giant carchadotosaurus 7.5 to 8 meters. of the t rex Timurlengia 4 meters what happened his does not know, after giganotosaurus 16 and 17, tons maximum missing little sought after from him 145-66 million years of him missing 89-66 millon years where he seeks the earth

@eybaza6018

Ай бұрын

@@thomasrichardholtz9031 We can measure the speed of modern animals pretty well through observation,obviously impossible with something that's no longer with us

@thomasrichardholtz9031

Ай бұрын

@@eybaza6018 In principle, yes. But not under controlled conditions. Almost all speeds published for wild animals are really "guesstimates".

@eybaza6018

Ай бұрын

@@thomasrichardholtz9031 Maybe not always guesstimates per se,but a lot of the time many minor factors may be warping the results to a number they in theory shouldn't be

MUCPv-CH-1 : 12.7 metres in length, and around ~9.2 tonnes in weight estimó que MUCPv-95 solo sería un 6,5% mayor 13-15 meter

@David-ni5hj

Жыл бұрын

That weight is too much for an animal half as wide as a T Rex

@rodrigoestebanquierofiguer9658

Жыл бұрын

@@David-ni5hj you shut up enough crazy sick shit his speech is pure CRAZY comes out

@rodrigoestebanquierofiguer9658

Жыл бұрын

@@David-ni5hj the highest femur gigas that you don't know SICK MIND

@rodrigoestebanquierofiguer9658

Жыл бұрын

@@David-ni5hj You don't know anything hahaha, South American and African giant dinosaurs from El Carchado Tosaurios and spinosaurus giant Maximo I hope when he's surprised that you're crying shit sick

@David-ni5hj

Жыл бұрын

@@rodrigoestebanquierofiguer9658 which one???

Giganotosaurus had a length of 13.7 to 14.3 meters and a weight of 8 to 10 tons based...

@grumpytrumpy1001

Жыл бұрын

We have no precise estimations of weight nor maximum speed of any dinosaurs. Only intervals. None of the estimation can be fully trusted because of the variance between them.

@David-ni5hj

Жыл бұрын

Based on nothing

@rodrigoestebanquierofiguer9658

Жыл бұрын

@@David-ni5hj you shut up enough crazy sick shit his speech is pure CRAZY comes out

@rodrigoestebanquierofiguer9658

Жыл бұрын

@@David-ni5hj You don't know anything sick and crazy t rex fans makes me laugh, I know everyone and paleology about silence david LEARN SICK MONKEYS

@rodrigoestebanquierofiguer9658

Жыл бұрын

@@David-ni5hj The biggest giant carcharodontosaurus is inland that you don't know anything about, mentally SICK OF THE CRAZY MONKEY

now gigas 13.7 and tons 10.5 information later gigantosaurus largest discovery of the maraxes gigas has bone 45 years subfamily giganotorirni largest 60 years older giganotosaurus largest long time be near giant that waiting time

@dogbird2252

Жыл бұрын

Nope t.rex is still larger

@rodrigoestebanquierofiguer9658

Жыл бұрын

​@@dogbird2252You don't know, shut up and you talk. End of it. You delete it, delete it please.

@rodrigoestebanquierofiguer9658

Жыл бұрын

​@@dogbird2252 You don't know anything I about the biggest carcharodontosaurus really that you don't know NOBODY SHUT UP

@David-ni5hj

Жыл бұрын

​@@dogbird2252 indeed

@Ealais76

Жыл бұрын

Giga has little to no bone content. That is the upper limit of giga estimates…

No new news on Trex in this talk. Boring lecture.