Seeing Dimetrodon relatives without sails feels... weird. Like they're just... missing something...

@notinspectorgadget

Жыл бұрын

You mean missing somthing...other than the sail?

@DraptorRonin

Жыл бұрын

@@notinspectorgadget Yes(?) It just makes them look so incomplete, like their lack-of a sail leaves me with the reaction “I-is that it? Isn’t it missing something important?” I dunno, maybe that’s just my brain acting up after years of being conditioned to seeing Dimetrodon-like synapsids with sails.

@denizen9998

Жыл бұрын

I'm sure they felt a little......less equipped.😢

@differous01

Жыл бұрын

Since soft body parts are missing, there's nothing to distinguish the sailed from the un-sailed: the two are sufficiently alike to be a case of sexual dimorphism.

@SoulDelSol

Жыл бұрын

@@denizen9998 they had sail-envy and went extinct bc no one liked them

When I work at the Paleontology Hall, I usually have a lot of kids tell me that Dimetrodon is a dinosaur. Then, I usually would have to tell them that it's not and how it's actually more closely related to them than a reptile. I always wondered why didn't anyone just update the information on present/prehistoric animal research for the younger generation. Also, I have actually talked to Dr. Bakker a couple of times.

@dr.polaris6423

Жыл бұрын

I've always been a big fan of Dr Bakker.

@notinspectorgadget

Жыл бұрын

@StevDaDaeodon pog?

@Kitsaplorax

Жыл бұрын

I've always been more interested in the Permian than later periods, though I've loved dinosaurs since visiting the Denver Science Museum as a kid. Big brontosaurus skeleton there.

@WaterShowsProd

Жыл бұрын

My friend was showing me video of her little nephew telling her the names of all of his toy dinosaurs. He loves dinosaurs. Naturally, there was a dimetrodon in with the toys and I mentioned to her that it's not actually a dinosaur. She said, "I know, he told me that." So, perhaps there is hope. This was in Thailand, by the way. It's interesting to me that dinosaurs are so very popular with kids and adults here. Over Mother's Day weekend, which just past, one of the malls had a fairly arge display of animatronic dinosaurs out in front with several species, and I saw lots of families going to see them.

@brianedwards7142

Жыл бұрын

We need a movie called Permian Park.

I'd love to see you look into the highly underappreciated time of the Middle Permian, filled with Dinocephalians! Things like Anteosaurus, Moschops and such evolved here, as well as early Gorgonopsids who were still quite small until an extinction event at the end of the Middle Permian gave rise to the reign of the Gorgonopsids of the Late Permian like Gorgonops and Inostrancevia.

@dr.polaris6423

Жыл бұрын

I’ll be getting to these groups relatively soon in the near future.

@Poliostasis

Жыл бұрын

@@dr.polaris6423 Oooo, I'm looking forward to it!

@sjonnieplayfull5859

Жыл бұрын

@@dr.polaris6423 relative soon... So within two million years?

Excellent! All too often, I've seen Dimetrodon lumped in with dinosaurs, and then quietly forgotten about, as its unique sail doesn't really compare with the size and 'grandeur' of dinosaurs. It's a shame, since as a grouping of animals that are part of the mammals' story, they get shamefully neglected!

Alongside the fascinating information presented, these videos are also such a showcase of the most jaw-dropping, forward-thinking paleoart around

It’s rather tragic that there isn’t much like the Permian sail backs today, I guess that’s what makes them more alluring to Permian fanatics and palaeontologists. Great video :)

I live for your intro.

Dr. Polaris is my favorite channel for prehistoric and crypto fun, he never disappoints.

@dr.polaris6423

Жыл бұрын

Thank you!

@heilmadon

Жыл бұрын

Careful we all know he is secretly a yeti covering his existence as a paleo bear

@markdebruyn1212

Жыл бұрын

I agree, but there are a few other good channels for Prehistoric animals Moth Light Media Animal Orgins Ben G Thomas North 02

@clintfrederici3928

Жыл бұрын

@@markdebruyn1212 Yup, watch all of those channels too, but Polaris is my "favorite" cause he's the best. :)

I love pinnipeds! Very excited for the next video. I'm really glad to have found your channel, you get a very nice level of detail that's engaging but not overwhelming.

@dr.polaris6423

Жыл бұрын

That was always my aim!

Dimetrodon with snout whiskers. What a time to be alive.

@dr.polaris6423

Жыл бұрын

It may have possessed some kind of whiskers, but there more likely developed in the derived Therapsids.

Surprised Spinosaurs weren’t mentioned as evolutionary convergence, but this was awesome always one of the most fascinating early creatures

I'm calling my next band "Dimetrodon and the Permian Sailbacks".

I am so grateful for this type of content. You always do an amazing job in each one of your videos. Prehistory is my passion and watching your videos brings me so much joy! Definitely one of the best paleo KZread channels out there! 👏

I always enjoy your videos. Thank you so much Dr. Polaris.

I think this is your best vid yet, mate. Great stuff. Looking forward to more synapsid material!

Nice vid one minor critique I have is that Sphenacodonts and other basal synapsids extinction at the end of the Early Permian is attributed normally to the Olsons Event and not competition with Therapsids on the contrary the reason Therapsids seem to have become successful was because of this event clearing out the more basal synapsids.

Love the Permian fauna, keep producing videos like this one. Outstanding job as always.

Dear Dr. Polaris, Thank you so much for this wonderful video focusing on dimetrodon. Dimetrodon has always been one of my very favorite prehistoric animals! Brilliant altogether, as usual! All the best! --N

I love this channel so much :)

Dimetrodon is my favorite dinosaur that isn't actually a dinosaur.

Thank you for the video. A very fascinating group.

very well done, as always!

I presume you read about varanopids being sauropsids and that"s why you didn't mention them in the video, a new study based on the cranial trigeminal nerve seems to show they are synapsids after all.

Excellent video! Thank you! One for the algorithm.

Good work and good documentary

Fantastic video!

Could you also make a video for Gorgonopsids?

@dr.polaris6423

Жыл бұрын

I certainly will be in the future!

@altanativeftw2625

Жыл бұрын

All the Permian therapsid clades would be great for videos, ESPECIALLY the biarmosuchians since they are basically forgotten compared to theriodonts, dinocephalians, and anomodonts.

I love Dimetrodon and other Perlman creatures like Ophicaodon and Prionosuchus Also this video was pretty incredible,I hope you have a good day

Could you do an episode on the evolution of feet in the synapsids and reptiles of the Permian? For that matter. I've never seen a good description of the feet of the big sauropods. Did they have soft tissue structures analogous to elephants and cows? Did they get foot infections? Thanks!

@elliottneswald908

Жыл бұрын

Just admit you have a fetish.

@m.w.5972

Жыл бұрын

The recent news is actually that they did have soft cushion like feet to dampen the impact of their insanely heavy body while moving.

@bartolomeorizzo

Жыл бұрын

I mean kzread.info/dash/bejne/qnhllqx_kcvSidY.html

@andrewpaige1194

Жыл бұрын

I JUST saw a fantastic video specifically about sauropod feet, and it was REALLY interesting! I can’t think of where, tho:( I’ll try to figure it out and get back to u:/

@andrewpaige1194

Жыл бұрын

kzread.info/dash/bejne/qnhllqx_kcvSidY.html I can’t believe I found it! It was like a week earlier than I thought I watched it, I was about to give up, but kept scrolling for some reason:) anyway, here u go, very cool info

always up for permian critters

Sick, thanks for sharing with us big dog!

Imagine if scientists could bring back a few examples of Dimetrodon Grandis? That would awesome and terrifying.

Very informative. I feel like I’m back at University when watching these

4:17 Bad to the bone

Im looking forward to the pinnipeds video

Could you do a video on mesonychids please? There are no videos that really go into them & readily available info about them is scarce

The very first illustration pictured in this video made me laugh out loud. Ridiculously great. Is there a credit?

Can u make video about Early Miocene dinosaurs?

Could you do an episode about trex & other tyrannosaurids please

When can we get more Alter-Earth videos?

Can you do one on borophaginae?

Crazy that some of these creatures existed for millions of years at a time before dieing off, now animals are lucky to be around for ~100yrs thanks to humans

6:20 Looks like some sort of weird cross between a Spinosaurus, and a newt.

How about longer videos

Are you going to continue with your speculative evolution series? Or is that done?

@dr.polaris6423

Жыл бұрын

If you'd like more speculative material, have a look at my deviantart page. I'll be making more videos on the subject when the project is more complete.

@cartercrum1490

Жыл бұрын

@@dr.polaris6423 oh right, because your essentially creating entire economics and family trees of animals that could have evolved from non-existent animals.

Dr. Polaris,is that you? My search is over 🤨🙄😁😜 haha, when I was younger the cereal cocoa pebbles had some coins that had some dinosaur's as prizes in them and the coin I got was this one I kept that like forever but as always I lost it somehow 😢😓 we had several more of these but that was the first time I had gotten a prize that meat something to me.

Dedicate the next pinniped video in memory of Freya the walrus, who was tragically taken from us today :(

Could the fin have helped them from being swallowed when smaller than large mouth predators? I’m thinking sharks versus turtles

@heilmadon

Жыл бұрын

I am not sure why there would be selective pressure afterwords for bigger sails because of that Unless display took over once that wasn't a concern.

So the tuatara is related to dimetrodon in short

Who doesn't LOVE a dimetrodon?!

Sup polaris!

still waiting on the next installment of alter-earth

my favorite non-dino dino!

Dimetrodon are the first Synapsids reptiles by the way.

I'm assuming Spinosaur had the sail for the same reason Dimetro did.

I think we can all agree on one thing….they were all delicious ! Nothing beats a Dimetrodon BBQ

I have a dimetrodon statue in my yard

Right after the evolutionary history of Pinnipeds Evolution, why don’t you also get to make a suggestion to create the KZread Videos Shows about the Epicyons (“More Than A Dog”), the Bone-Crushing Dogs in just a couple of weeks to think about that one coming up next?!⭐️⭐️⭐️⭐️⭐️👍👍👍👍👍

@markdebruyn1212

Жыл бұрын

Moth Light Media, already has video about the evolution of Pinnipeds kzread.info/dash/bejne/k3WD1chpYJesobQ.html

Is the modern day tuatara a synapsid?

@dr.polaris6423

Жыл бұрын

Nope, it's a Rhynchocephalian Lepidosaur.

@Dr.IanPlect

Жыл бұрын

@@dr.polaris6423 While the case, that's not a direct correlative classification to synapsids. That would be the sister clade of Synapsida, Sauropsida.

@Dr.IanPlect

Жыл бұрын

Daniel Rhynchocephalian lepidosaurs they are, but neither of those groups (unless you happen to have prior knowledge) tell you if that means they are synapsids or not. The clade Synapsida is one of 2 major branching lineages (a huge clade) that evolved from an early amniote common ancestor. The other clade lineage from that amniote common ancestor is Sauropsida. The next point answers your question; - Sauropsids are the reptile lineage (though not until later, early taxa were not reptiles) - Synapsids are the mammal lineage (likewise, not until later, early taxa were not mammals) So, tuataras are sauropsids.

I was under the impression that the oldest egg ever found was a dinosaur egg. Did they find something older?

@borjie2727

Жыл бұрын

Yah

Is the size of a small dog bigger or smaller than the size of a large cat 👈👀

@m.w.5972

Жыл бұрын

A small dog is between the size of a York and a Dachshund

@barbararice6650

Жыл бұрын

@@m.w.5972 Between the size of York and a Dachshund you say 😑

@donaldbaird7849

10 ай бұрын

Smaller for sure. Maine Coons can get quite big

I was heartbroken when I found my favourite dinosaur wasn't

Imagine what will happened if Dimetrodon was been thrown into a quantum portal that will lead to the hollow Earth filled with radiation, what will they look like?

7:52 How do we know that these represent many different species and not just one species with various age ranges and sexual dimporhism?

@MarkVrem

Жыл бұрын

probably because they are separated by 100,000s to millions of years. Also the bones leave clues also. How formed they are, are they still growing. Full maturity, or stating to lose it from old age.

Come on ye sailbacks

Windy days must have been really annoying for these guys. 😝

Heeey polar bear doctor! Woohooo

Couldn't the sails be a defense against flying predators?

@dr.polaris6423

Жыл бұрын

That's an interesting idea but there weren't any flying vertebrates that were contemporary with Dimetrodon.

@wentshow

Жыл бұрын

@@dr.polaris6423 Maybe we haven't found them yet. I know that's an affirming antecedent fallacy, but we should stay tuned.

Dragons

No offence but you sound like dominic raab

@dr.polaris6423

Жыл бұрын

Oh dear! Not a fan of the man or his political party at all but no offence taken.

Love it. But I'm in the 'Dimetrodon had no sail' camp. Anyone else see this animal getting blown around in the wind if it had a giant sail on its back? Edit: therefore, hump with antler-like spines sticking out.

@gearandalthefirst7027

Жыл бұрын

It seems to have a quite low center of gravity, unless it was stuck in a hurricane I can't imagine it would affect it too much day-to-day. And the day-to-day is all that matters if it was effective for attracting mates.

@peterrabbit2965

Жыл бұрын

@@gearandalthefirst7027 Low center of gravity, granted, but those spines are pretty huge - google said, up to 15 feet tall, which is nearly 5 metres. That's a lot of surface area for the wind to act on. I did see recently that it lived in swampy, foresty type landscapes which I don't associate with high winds, but still, it wouldn't take much wind to catch a 15 foot sail. And sexual selection works beautifully on antlers for us true mammals. Anyway, you made me think, so cheers.

@sjonnieplayfull5859

Жыл бұрын

@@peterrabbit2965 15 foot? For an animal ten foot long???

@peterrabbit2965

Жыл бұрын

@@sjonnieplayfull5859 yeah I was thinking about that the other day and it didn't seem right. I saw it on google somewhere?

Please note that genera is pronounced JEN-er-a, not je-NERR-a

@gearandalthefirst7027

Жыл бұрын

Please note that dialects exist.

@challalla

Жыл бұрын

@@gearandalthefirst7027 This is not a matter of dialect. This is learned vocabulary with an agreed-upon pronunciation in English regardless of dialect. Genera is the plural for genus, just as opera is the plural for opus, all coming from Latin (you wouldn't say o-PERR-a for opera). While there are cases of dialectal variation in pronunciation even for learned words from Latin, genera isn't one of those.

That's what they're thinking; they're flesh-eaters.😶

How do you know there were separate spies of these animals rather than just different stages of development?

Synapsids diverged from anapsids and diapsids in the temnospondyl amphibious phase, long before the amniotes evolved. Synapsids did not evolve from reptiles or any reptiliform.

Dimetrodon is a more direct ancestor to us, but I do really feel that derived dinosaurian birds are not very reptile, like basal synapsid stem mammals were much more reptile than people like to admit (despite their lineages saying otherwise).

@Dr.IanPlect

Жыл бұрын

Well, regardless of what your ambiguous wording is getting at; - Dimetrodon is not ancestral to mammals - birds (derived dinosaurian > avian dinosaur!) are very reptilian, despite your feelings - stem mammals were not at all reptilian, and the lineage really does say so!

@TedShatner10

Жыл бұрын

@@Dr.IanPlect Sauropsids and synapsids diverged over 300 million years ago while synapsid Dimetrodon evolved roughly 290 million years ago (much less time elapsed with their divergence than between modern marsupial and placental mammals, who had diverged around the early Jurassic period). Basal synapsids like Dimetrodon was very much of outwardly amniote/reptiliamorph stock alongside their contemporary diapsid sauropsid cousins who became modern reptiles, crocs, and birds, even if it was part of a then relatively new lineage that eventually became modern mammals. Birds are of more direct sauropsid/reptile stock, but are as highly derived as us synapsid mammals (aside from egg laying and vestigial scales). And the monotremes (who shouldn't really be classed as crown mammals) still retain amniote/cousin reptile features, with egg laying and skeletal structures more similar to modern lizards than modern rodents.

@Dr.IanPlect

Жыл бұрын

@@TedShatner10 Not a word of that goes against my points of clarification regarding your original comment. I get the impression you wrote all that in an attempt to overwhelm me with information that, to a lay person, would convince you had a valid point! Well, I'm a PhD zoologist; my remarks regarding your first comment are unchanged by this reply.

@TedShatner10

Жыл бұрын

@@Dr.IanPlect I defer to your superior qualifications. Dimetrodon was never a true sauropsid reptile, but still ofteb visually depicted as reptile looking (though paleo art in recent years are granting them more overt proto mammal features).

@Dr.IanPlect

Жыл бұрын

@@TedShatner10 "I defer to your superior qualifications." - I appreciate the respect, however; was that an implicit admission that your spiel was indeed intended to pull the wool over my eyes in an effort to get my acceptance of your perspective?! Be honest. "Dimetrodon was never a true sauropsid reptile, but still ofteb visually depicted as reptile looking (though paleo art in recent years are granting them more overt proto mammal features)." - Yes, Dimetrodon has nothing to do with reptiles. Those early depictions are in line with scientific thinking until quite recently (many people are still behind!). Formerly early mammals were understood to have evolved from reptiles, primitive reptiles, but reptiles all the same. This is why terms like 'mammal-like reptiles' were once in use; reptiles were taken as the common ancestor of modern reptiles _and_ mammals, and those reptiles on the mammal lineage were so-called. Since our understanding changed, 'mammal-like reptiles' is obsolete, with the more accurate 'stem mammals' in its place. In your comments I note and I'm pleased to see you using this proper term. - I do still disagree with how much emphasis you put on the derived characteristics of birds. Their primitive hallmarks go far beyond scales and egg-laying!

Dude, your recording level is too low to hear well. I have to adjust you to a level of 60 from my normal 35.

Is the narrator using his mouth to speak?

@theluftwaffle1

Жыл бұрын

No.. he’s using his nose.

I just hate thise sails. So akward, and can’t imagine them being prectical. They could get stuck or blown over with a heavy side wind. Really strange, but i quess spinasauros thought YES gimme that!