Homotherini: Rise of the Scimitar Cats
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- เผยแพร่เมื่อ 7 ก.ย. 2024
- Homotherini, also known as the scimitar toothed cats, were a clade of Machairodontine Felids that achieved widespread success in the Neogene. The upper canines of these animals were comparatively shorter and flatter than those of Smilodon and its relatives, possessing steak-knife-like serrations along the edges. Several genera were also rather cursorial terrestrial hunters with elongated limbs and tails that were noticeably longer than those of other sabre tooth cats. Based on mitochondrial DNA analyses carried out on the fossils of the genus Homotherium, this lineage probably diverged from other Machairodontines roughly 18 million years ago during the Early Miocene. However, some genera (including Amphimachairodus and Xenosmilus) were massive and bulky, being among the largest of all Machairodontines. These predators ranged across Africa, Eurasia and the Americas until the Pleistocene-Holocene boundary.
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Wow, it's a shame that these cats don't get more attention in wider media. I had no idea that so many of them got so big! Nice one!
Also massive kudos to the artists who draw these more obscure creatures, it's beautiful to see them depicted. 👍
Edit: Congrats on 20k subs! 20,000 people think you're awesome, and that's good. 😁
Thanks! I agree that Smilodon tends to hog all the attention away from other impressive Machairodontines.
I never knew this cat ever existed.I thought only smilodons existed that time
Mauricio Anton of whom several pictures are shown has a nice book "Sabertooths" on the market, it deals with all sabertoothed predators
I love the Scimitar Cats and it's disappointing to see them be overlooked by Smilodon and the American Lion.
I agree.
Flange opening duct spigot
@@ihoperumbletakesoff I have no idea why these extremely successful and adaptable generalist predators died out while cheetahs were able to survive. Homotheres (excluding xenosmilus and Homotherium crenatidens which were built more like a Dirk tooth but still unique) had the best traits of both saber toothed and pantherine cats (they had stronger canines than Dirk tooth's less prone to breakage and able to handle higher stresses), able to chase and grapple effectively with prey. Their hind limbs were better suited for grappling (more than modern lions) but the front limbs were better suited for running. The recent DNA analysis of Homotherium was extraordinarily insightful and really surprising they died out in euresia considering they ate yak, mammoth, horse (not that easy to catch on open plain). Still the family survived for 5 million years. Pretty incredible that they are only very distantly related to Dirk tooth's.
Dont think they care too much though
it's my favorite too, due to the long legs and short tail I consider them as Saber-Lynx ( maybe it also had tuffed ears).
Congrats dude i remember when you had only a few thousand subs youve come a long way love the vid hope you grow even more into the future.
Thank you so much!
This is one of my favorite prehistoric cats
Again another excellent presentation! I live less than one hour from the Hog Heaven sinkhole den of Xenosmilus were it's remains were found. I met the amateur fossil collector Larry Martin who discovered its remains in 1983. I have found several Xenosmilus fossils here in Central Florida over the last 35 years in Citus County and consider their remains the rarest fossils in my studies and research collection. I recently also studied the post cranial elements of Machairodus from West Texas at the Panhandle Musem at the West Texas University. Recently. The pelvis in their collection is one of the largest cat fossils I've ever encountered! Dr. Polaris please keep up the fantastic videos on prehistoric fauna.
Congratulations 🎉 on your 20,000 subscription goal my good sir
No problem, thanks for your support!
NP and keep up the great work 👍
Congrats for 20K subs!
Thank you!
There are so many varied forms in this genus. I think its was the appearance of the true Bears black and brown that ended their reign, with Ursidae wider omnivorous diet giving this group the advantage in lean times. Great report, Dr!
Its been really cool to watch your channel blow up, I started watching when you had a couple hundred subs and you totally deserve many more
Thanks for sticking with me all that time! I really appreciate your support.
Congrats with 20 000 subscribers, i can't wait to see what videos will come next.
Congratulations man!
Hope to see you reach out more and grow!
Thank you so much!
Good day and congrats Dr. Polaris! Much love from Alaska, Usa! Love the channel!
Congratulations on the 20k, this is fast becoming one of my favourite palaeo tube channels.
Could you please consider making a video on the other machairodontine cats? Especially how they lived alongside the Homotherini and would their evolutionary relationships could be.
Thank you! I absolutely will be covering more Machairodontines in the near future. Researching for these videos has shown me just how diverse they were, something I hadn’t appreciated before.
I remember when you just had under 2,000 subscribers, now you have 10 times that congratulations 🥂🎉🎉🎉🎊🎊
Thanks for your support!
Many congratulations on 20K!
To this day I have no idea why these extremely successful and adaptable generalist predators died out while cheetahs were able to survive. Homotheres (excluding xenosmilus and Homotherium crenatidens which were built more like a Dirk tooth but still unique) had the best traits of both saber toothed and pantherine cats (they had stronger canines than Dirk tooth's less prone to breakage and able to handle higher stresses), able to chase and grapple effectively with prey. Their hind limbs were better suited for grappling (more than modern lions) but the front limbs were better suited for running. The recent DNA analysis of Homotherium was extraordinarily insightful and really surprising they died out in euresia considering they ate yak, mammoth, horse (not that easy to catch on open plain). Still the family survived for 5 million years. Pretty incredible that they are only very distantly related to Dirk tooth's.
Cheetah genetics showed they went through several intense bottlenecks through the Pleistocene.
@@miquelescribanoivars5049 Thanks for the information. I would definitely imagine that was the case, but amazingly they survived while homotheres died out in Africa (one theory is they were outcompeted by lions) for example long before Euresia and North America.
Amazing video and congratulation for 20000 subscribers.
Congratulations, Dr Polaris, on reaching over 20, 000 subscribers. Please keep up your excellent work.
You deserve the subscribers and views. You are rightfully amongst best quality prehistory-themed channels on TH-cam. Keep up the great work ❤
Congratulations for your 20K, your content is amazing
Can you dive into Toros-Menalla's paleoecology or even the Adu-Asa Formation's as well?
Congrats on your 20k that is subjected huge milestone, be proud of all the amazing content you are publishing.
Thrilled that you're at 20k subs. Honestly the quality of your videos deserves ten times that at least. Keep up the excellent work.
32k subs now. You cover so many underappreciated groups of extinct animals you're definitely going to keep growing. Keep it up!
Congratulations Dr. Polaris!
Congratulations man for reaching 20K,I'm very proud of you,and this was another great video on some more awesome Cenozoic animals.
Also I wish y'all are having a great day.
Fascinating! I remember when you had like 1,500 subscribers. Keep on going!
I love your videos because they're always 100% on topic, and your presentation style is excellent.
I can't wait to see your next video.
There are more types of sword toothed cats?
My life has been enriched.
Congrats on 20k been here since 1k
20K , excellent . Lets go for 50K !
👍
Maybe even 100 000!
I remember subscribing when you only had around 3,400 subscribers, congratulations on making it to over twenty thousand! Excellent video as always and I hope you get even more success in the future.
Definitely your video's quality deserves way more subscribers.
Man I wish this genus of feline would still be around. They are so facinating. I wish so many genus species of around this era of biology still existed in some ways. I just love how creatively well adapted each animal was for it's exact niche.
Awesome video, keep it up and soon you will have many more suscibers
4:47 A real CHAD!
The audience: Get off the stage!
I just knew this joke was coming!
An excellent episode.
like your stuff , well edited and very understandable
I wish homotherium could be still with us. I liked to study it's interactions with other predators and the rest of the environment
Homotherium is probably one of, if not the most successful and most unique of all the big cats, ever
@@vincentx2850 next to lions yeah.
I would say lions are tge most successful since they ruled every part of the world they could survive in except Australia.
@@gecko_9505 lions arguably have a bigger range though the case with south america is dubious. But temporally speaking the reign of the lion is very short
@@gecko_9505 Homotherium played an important role in the grassland ecosystem for 5 million years, and their range also spanned all continents except Australia (although their success in SA is very regional). Lions are really unlucky in comparison
Dr. Polaris 👍
I know I'm late but..
Congrats on 20k subs!
Congrats on 20k subscribers!
Congrats
Imo, yours is on the shortlist of educational YT channels ❤
Thanks for these interesting videos
Congrats on 20K subs!!!!!!🎉🎉🎉🎉
Congrats on 20,000 subs, good sir!
Hi possessor polaris
Wonder how the homotherini cats would have affected modern ecosystems if they survived and still thrived into the modern day
Homotherium have significant age overlap with most of the steppe/savannah large carnivores today so they can definitely coexist. But as a diurnal pursuit hunter, their presence will make large herbivores a lot more uneasy than crepuscular ambush predators like lions, keeping them on the move similar to wolves and hyenas. That would probably shift the balance among large herbivores, like what happened in Yellowstone. This also put them into direct competition with early humans though, and that probably wouldn't fair well for them today...
Xenosmilus probably wouldn't do well in the modern day Americas. There is simply not enough large forest dwelling herbivores to sustain a social big cat weighing around 300kg. Jaguar only survived by shrinking from almost tiger size to the size today, and puma is probably the largest cat that is viable in the temperate forests. But they might be able to survive in the forest and woodland of Eurasia or Africa?
@@vincentx2850 not to forget that xenosmilus would've been more aggressive
I think they would die out all the same sooner or later. All modern large land animals will survive only in zoos ir natural reserves, since their habitat is being destroyed by the humans.
I like machairodonts as a whole!. Also do you ever plan on talking about dinopithicus? It's a personal favorite of mine!.
you have info on prehistoric life i have never heard of before excellent
Superb, absolutely superb. This niche is yours for the taking Dr Polaris.👍👍👍
Good research and a very good effort. Keep it up.
I would like to please request Dr P. to do an episode on the Tassie Tiger.
Dude, Xenosmilus is my favourite of all sabers
Congratulations on 32 k
If you do another video on the Saber-Tooth cats, I'd be interested to know what your opinion is of how these animals used their long canines. Is it for, holding, or piercing and killing.....? Some depictions I've seen over the years, it seems a wonder the cat can open its mouth wide enough to even make a bite, which doesn't seem plausible, at all.
I love Them Scimitar Cats Are ferocious
happy 20k
Omg finally, someone makes a video about these guys.
I wish these companies like safari ltd, and collecta would make this cat or a nimravid or anything other than smilodon.
this was good
? when are we going back to Alter-Earth??
Amazing variety that Darwin's theory produced. Really a miracle of design.
TBH the thumbnail art really made them look like Bearcats. XD
4:43
Just a heads up, A. kabir has recently been assigned to its own genus, due to morphological differences in comparison to the bones of Amphimachairodus.
It is now known as Adeilosmilus.
Oh, and another thing.
With the description of Taowu, Homotherini has been downgraded to a subtribe within Machairodontini, it’s Homotherina now.
Very cool thanks
Don't let Big Lenny hear you call them 'cookie cutters'!
What's their combat lvls? and what is the rune scimitar drop rate?
This is just what i want after the grim experience i just had reading through the news on my Facebook newsfeed
Superb work
Dr polaris xenosmiles weighd 300kgs not 400kgs and also amphimachairodus kabir weighs 490kgs not 360kgs so amphimachairodus kabir was so much bigger than xenosmiles so please correct your information
Can we get a vid about macropredatory monitor lizards? Quite an interesting topic as only Komodo dragons have left timorean dragons, Megalania and probably many others went extinct
From what I know, they were avid mastodon and mammoth eaters
Xenosmilus rival would’ve been smilodon gracilis and then it was outcompeted by smilodon fatalis
That would be quite presumptuous, as Xenosmilus have a significant age overlap with S. fatalis and they appear in the fossil record at almost the same time. And to be honest, changes in fauna composition is rarely the result of head to head competition, especially for species that co-evolve in the same habitat, more often due to environmental changes. Mid Pleistocene is after all a tumultuous time.
@@vincentx2850 either thst or it would had to adapt since Florida was like the plains of today, and said Smilodon lived in Moore forest in woodland areas. I’m pretty sure that xenosmilus probably would’ve migrated into more open country areas and then it would evolved into homotheruim
@@vincentx2850 and I also heard rumors that xenosmilus was almost not the size of smilodon populater. It was about the size of a modern lion.
Great channel man.
I like this Alexandra genus. I hope it's not extinct.
Can you please make a video about the giant fossa of Madagascar?
Who drew the thumbnail? I was hoping to use it for a computer background.
Amphimachairodus would be a cool video
Good
Video about the life in the late tundras and forests of Antarctica before the total glaciation of the continent? Imagine that only less than 3 million years ago, there were some terrestrial mammals and leafy trees still alive there
Mine favorites are amphimachariodus and xenosmilus
We now know that Homotherium has good stamina, but I really wonder how good is it really. That would shape it's exact hunting style and its interaction with the other fauna. After all ,pursuit predators come in many different flavours, from the relatively short fast chase of the cheetah, to the extreme long distance marathon of the wolf.
Probably somewhere in between.
It definitely wasn't as horrible at distance running as cheetahs but it most likely didnt match the stamina of the grey wolf
@@gecko_9505 I think people often underestimate the *relatively* long distance capability of cheetahs. They are the fastest animal by a long shot and they know how to use their speed with most efficiency, only shifting to top gear when necessary to avoid overheating. When approaching slower prey and in situation with little cover, cheetah may begin their hunt with trotting, and begin charging at a distance as far as 200m away from the target. That is a LOT further than any other cats, which usually do that within 10m.
@@gecko_9505 For reference, a typical cheetah hunts usually cover 200-500m. The painted dog, another diurnal hunter known for its stamina, usually covers 2km. So while not necessarily a marathon runner, I wouldn't say the cheetah really horrible, and in fact quite good by cat standard. The case with grey wolf is different as most of their studies are conducted in temperate regions, and they don't need to worry as much about over heating. In contrast, cheetah and painted dogs often hunt in the heat of the day to avoid lions
@@vincentx2850 thank you for telling me :(
:) *
Would like to see more videos about exstict big cats
In _Amphimachairodon kabir_ , "kabir" is Arabic for "big".
I love that you used music from the jungle book in there
Good show please do one on bears
I had no idea that there were so many members in cats family tree.
is that stranglethorn vale music?
Yes!
Fascinating group
Is that WoW music playing in the background?
Machairodus kabir being one of the largest felid to have ever existed and is native to chad no wonder it's one of the biggest lol
I’ve never even heard of an American Lion
Amphimachairodus-sabertooth that actually resembled a tiger.
Why are the subtitles in poorly translated Korean?
You should do a video on the bush dogs
If you like Dr, I could make you a better Channel Banner using your logo and your channel theme if you would like. Free of course :)
Were these upper oversized canine teeth helpful or an encumberance.
🎉😢🎉
Please english subtitle.
If you walk through a field, and suddenly THIS massive creature raises up out of the vegetation 20 m in front of you!
How about machairodus laishaiup (forgot the spelling)
Am I the only one thinking they look strikingly similar to hyenas?