Dimetrodon: YDAW Archive (Re-upload + Corrections)

www.patreon.com/YDAW -- The show began its life on another channel several years ago. Now that we have a channel of our own, we're slowly bringing those episodes over to join our newer ones (with added corrections/updates). Fourth is Dimetrodon!
Check out our merch: ydawtheshop.etsy.com
Playlist of all of our older videos here: kzbin.info/aero/PL4V5MsSrz9qcpiIlYb7ddYHYwhJP-n8hD
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Contents:
0:00 Original Episode
8:11 Addenda
8:55 Synapsids & Sauropsids
9:34 Gait & Activity
10:32 Size Variation
10:55 Mouth & Teeth
12:25 Neck (or lack thereof)
13:22 Nose, suppose
14:20 Hearing
15:50 Tail Uncertainty
17:54 Hip & Ankle
18:59 "Spinescence"
20:31 Sail Shape
23:31 Posture
24:38 Scales?
25:45 Conclusion
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For more updates and paleo-related fun, follow us:
Twitter: YDAWtheShow
Facebook: YDAWtheShow
Instagram: yourdinosaursarewrong
Discord: discord.gg/B72YH6u
Ko-fi: ko-fi.com/ydawtheshow
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Sources & Links:
Case, E. C.
(1907)
Revision of the Pelycosauria of North America (No. 55).
Carnegie Institution of Washington.
www.google.com/books/edition/Revision_of_the_Pelycosauria_of_North_Am/7QMDAAAAIAAJ
Gilmore, C. W.
(1919)
A mounted skeleton of Dimetrodon gigas in the United States National Museum, with notes on the skeletal anatomy.
Proceedings of the United States National Museum 56 (2300): 525-539.
repository.si.edu/handle/10088/15096?show=full
Romer, A. S.
(1927)
Notes on the Permo-Carboniferous Reptile Dimetrodon.
Journal of Geology.
doi.org/10.1086/623462
Olson, E. C.
(1962)
Late Permian Terrestrial Vertebrates, U.S.A. and U.S.S.R.
Transactions of the American Philosophical Society, 52(2), 1-224.
doi.org/10.2307/1005904
Hunt, A. P., & Lucas, S. G.
(1998)
Vertebrate tracks and the myth of the belly-dragging.
Permian Stratigraphy and Paleontology of the Robledo Mountain, New Mexico: Bulletin 12, 12, 67.
www.google.com/books/edition/Permian_Stratigraphy_and_Paleontology_of/-GgdCgAAQBAJ?pg=PA67
Kemp, T. S.
(2006)
The origin and early radiation of the therapsid mammal-like reptiles: a palaeobiological hypothesis.
Journal of Evolutionary Biology, 19(4), 1231-1247.
doi.org/10.1111/j.1420-9101.2005.01076.x
Niedźwiedzki, G., & Bojanowski, M.
(2012)
A Supposed Eupelycosaur Body Impression from the Early Permian of the Intra-Sudetic Basin, Poland.
Ichnos, 19(3), 150-155.
doi.org/10.1080/10420940.2012.702549
Kubo, T., & Ozaki, M.
(2009)
Does pace angulation correlate with limb posture?
Palaeogeography, Palaeoclimatology, Palaeoecology, 275(1), 54-58.
doi.org/10.1016/j.palaeo.2009.02.001
Huttenlocker, A. K., Rega, E., & Sumida, S. S.
(2010)
Comparative anatomy and osteohistology of hyperelongate neural spines in the sphenacodontids Sphenacodon and Dimetrodon (Amniota: Synapsida).
Journal of Morphology, 271(12), 1407-1421.
doi.org/10.1002/jmor.10876
Fröbisch, J., Schoch, R. R., Müller, J., Schindler, T., & Schweiss, D.
(2011)
A new basal sphenacodontid synapsid from the Late Carboniferous of the Saar-Nahe Basin, Germany - Acta Palaeontologica Polonica.
Acta Palaeontol. Pol. 56 (1): 113-120, 201
doi.org/10.4202/app.2010.0039
Berman, D. S., Reisz, R. R., Martens, T., & Henrici, A. C.
(2011)
A new species of Dimetrodon (Synapsida: Sphenacodontidae) from the Lower Permian of Germany records first occurrence of genus outside of North America.
Canadian Journal of Earth Sciences.
doi.org/10.1139/e00-106
Rega, E. A., Noriega, K., Sumida, S. S., Huttenlocker, A., Lee, A., & Kennedy, B.
(2012)
Healed Fractures in the Neural Spines of an Associated Skeleton of Dimetrodon: Implications for Dorsal Sail Morphology and Function.
Fieldiana Life and Earth Sciences, 2012(5), 104-111.
doi.org/10.3158/2158-5520-5.1.104
Brink, K. S., & Reisz, R. R.
(2014)
Hidden dental diversity in the oldest terrestrial apex predator Dimetrodon.
Nature Communications, 5(3269), 1-9.
doi.org/10.1038/ncomms4269
Hopson, J. A.
(2015)
Fossils, trackways, and transitions in locomotion.
In Great transformations in vertebrate evolution (pp. 125-141).
University of Chicago Press Chicago IL.
www.google.com/books/edition/Great_Transformations_in_Vertebrate_Evol/zb5TCgAAQBAJ?pg=PA125
Scott Hartman
(2016)
"Taking a 21st century look at Dimetrodon"
Dr. Scott Hartman's Skeletal Drawing.com
www.skeletaldrawing.com/home/21stcenturydimetrodon
Higashiyama, H., Koyabu, D., Hirasawa, T., Werneburg, I., Kuratani, S., & Kurihara, H.
(2021)
Mammalian face as an evolutionary novelty.
Proceedings of the National Academy of Sciences, 118(44), e2111876118.
doi.org/10.1073/pnas.2111876118
Bazzana-Adams, K. D., Evans, D. C., & Reisz, R. R.
(2023)
Neurosensory anatomy and function in Dimetrodon, the first terrestrial apex predator.
iScience, 26(4), 106473.
doi.org/10.1016/j.isci.2023.106473
#ydaw #ep04 #dimetrodon

[@YourDinosaursAreWrong]

If you like our stuff, and would like to help us keep making it, please consider chipping in over at patreon.com/YDAW, or taking a look at our products at www.ydawtheshop.com, or by buying Steven a coffee at ko-fi.com/ydawtheshow . All proceeds go back into making the videos you see here!

[@DryptosaurusDavid]

Believe me, I want to join your Patreon, but it is not in my realm at this point but I’ll think about it, I really love these videos more than the Jurassic world movies nowadays

[@beneficent2557]

Are Turtles still Anapsids? Or are they Diapsids now? I forget.

[@beneficent2557]

Also how close is Edaphosaurus to Dimetrodon? Curious if the sail is convergent.

[@beneficent2557]

Also thanks for bringing up Hartmann, I love his reconstructions.

[@Empr4evr]

Any chance of a spin-off series/channel "Your Synapsids Are Wrong"?

[@berkleypearl2363]

I literally just learned that Steven isn’t a trained paleontologist???? He’s an animator who just loves dinosaurs???? But somehow is so good at reading these papers, understanding anatomy, analyzing the available information, retaining facts about evolution and biology that he may as well have a career as a paleontologist… does… does ydaw count as paleontology? It feels like it. It’s so rigorous and scientific these days

[@tjarkschweizer]

This channel definitely counts as science education.

[@Ditidos]

I would definetly say this channel is more advanced than most educational dinosaur channels I have found. I doubt a person who is just getting in can fully understand the episodes since they have a lot of technicisms in them. But it's one of my favourites precisely for this. There are very few, if at all, channels that get to this level of deepness in anatomy, ecology and reconstructions since they try to grab newer people. Not that that's bad, mind you, it's great those are the most common ones, but for a person who have read so much but is still unable to fully read the scientific literature on this completely these kinds of middlepoint channels are excelent.

[@TheAtroxious]

I was just getting back into zoology and paleontology after being out of it for years when I first discovered this channel, and it really helped me brush up on my animal anatomy. I definitely did not understand everything, but the obvious passion behind these videos was incredibly inspiring, and gave me a basis to jump off of once I decided to take zoology seriously. Nothing wrong with being technical in my opinion. Exposure to new terms is the only way to learn said terms, and a lot of the terminology is explained quite well in my opinion. This channel is unparalleled when it comes to learning about animal anatomy in my experience.

[@superxavxii421]

If this is true, then he's doing really good. These videos are professional af

[@_veronica_r]

At this point I think he should get an honorary degree!! 😂😂❤❤

[@FuriosoDrummer]

"Shame on Steven!" was very funny, I really appreciate and respect how enthusiastically you correct your past self with zero real ego.

[@MegaEvilsaurus66]

No, it takes tremendous ego, or self-respect and confidence to be able to criticize how you were before and to have pursued greater heights in the first place. Good ego. This shows having adequate sense of self-worth. To be able to reflect upon what you were incorrect on and correct yourself requires having integrity.

[@jensphiliphohmann1876]

​@@MegaEvilsaurus66 Ego is not the same as stable self-esteem, I feel. The usage of "having a huge ego" points at the meaning of thinking highly on oneself but being churned by any criticism, taking it personally.

[@leminjapan]

This is how all scientists should be! Mistakes are just as valuable as successes in learning AND teaching.

[@HobGungan]

I dunno, the fakeout ending of the original has always been one of my favorite gags from this series

[@diegodankquixote-wry3242]

Dimetrodon is my favorite thing people claim to be dinosaurs but aren't. Unfortunately for dimetrodon, it seeming has grown unpopular with time! People used to include dimetrodon in the march of progress, what a downfall!

[@jeffreygao3956]

I never forgot! Now go and pet that sail backed kitty!

[@thdenwheja756]

It might have a bit to do with people not associating it with dinosaurs anymore. I'm all for historical accuracy, of course, but in the public conciousness, it may be fading the way it is because they're being reminded that, no, it didn't fight T. rex like those kids' toys make it look like it did, and since paleontology sci-comm is mostly Cretaceous dinosaurs anyways, the Paleozoic and large swathes of the Cenozoic are just kinda ignored.

[@60degreelobwedge82]

It seems like dimetrodon has been replaced with spinosaurus in the public consciousness. The casual dinosaur fan can only love one sail-backed animal. Plesiosaurs are popular non dinosaurs too (and I love to see an episode on them) and thanks to Loch Ness they will never fade like dimetrodon.

[@danieldover3745]

I think it's because people get that it's not a dinosaur, and therefore, is no longer worth attention, which is a shame, because the Permian was an amazing era, and Dimetrodon was a great way to introduce that conversation

[@charlesdarwin7647]

I don't know what kind of fools classify dimetrodon as dinosaurs, but I've never met any. As for its popularity, it was often shown in films and was even featured in the latest Jurassic World movie. I think it is one of the most popular synapsids.

[@Infernoraptor]

If you look back at your old work and cringe, that means you've grown.

[@EGeorgev]

This reminds me of that youtuber, who I will not name, that said that he never experienced cringe when looking back at his old videos from 10y ago. To him they are just as great now as they were when he first made them. Talk about a character stagnation.

[@EriktheRed2023]

I'm looking forward to a time when I will have grown to where I will stop cringeing and will merely chuckle.

[@TheJimmyp427]

​@@EGeorgevwho?

[@mattperson7293]

Goodness!!! Baby Steven! He popped out with a beard too! Impressive.

[@DrBunnyMedicinal]

Baby Steven is *so* adorable! 😁

[@MashupsByMandy]

The real question is: Was the Dimetrodon nice to be around? He looks a bit hostile but maybe it is all posture, maybe he was as nice as an iguana or reptilian capybara.

[@saltrocklamp199]

I always imagine these large ancient predators as behaving mostly like modern large predators. Maybe friendly if raised in captivity or had some particular positive interaction with the human, otherwise scary and dangerous.

[@tjarkschweizer]

This thing would bite you. No doubt.

[@danielsonlisik534]

I bet we could pet it

[@togepipokearts4504]

@@saltrocklamp199 i think it would be chill, but like... alligator chill. if its not hungry and you leave it alone you're safe

[@theorangeninja6486]

on the list of reptiles i would point to to demonstrate a chill personality, iguanas are about as low on that list as it gets lmao

[@MonoSharkBold]

I am now going to be obsessed with Dimetrodon Teutonis and it's positively microscopic size, thank you. And also thank you for giving us subspecies names too, brings us more awareness on the biodiversity of these creatures

[@thdenwheja756]

i vote to give it the name "Yorkie-doodle-don" and market it as a pet.

[@KidarWolf]

Right? I had no idea there was a teeny-tiny little dimetrodon, but now I'm going to be thinking about it a lot. It's almost perfectly pet sized, and does make me wonder whether it would have been similar to some of the larger species of reptiles commonly kept as pets, so far as behavior goes.

[@beneficent2557]

Is it German?

[@Gasmaskmax]

​@@beneficent2557I believe so. I think its also the only Dimetrodon species from outside North America.

[@Ahonya666]

​@@thdenwheja756 minitrodon

[@lexibyday9504]

acurately reconstructed Synapsids look nothing like dinosaus and a lot like hairless pitbulls

[@thagomizermaster]

10:41 kitty-sized _dimetrodon teutonis_ is the cutest thing ever

[@iridiumSerpent]

I want ten

[@aircraftcarrierwo-class]

Thank you for the additional information about Dimetrodon! That original episode might be one you consider your worst, but the opening is still one of the best in the series.

[@Brekekekiwi]

I loved the 10 foot note as well, very chuckle worthy

[@EGeorgev]

Speaking of opening, I miss the cheeky titles Steven was given for every episode. In this one it said 'synapsid' which was very appropriate. In another I remember it saying 'secretly hates t. rex'.

[@tongatapu7325]

Would love an Ichthyosaur episode, like Ophthalmosaurus or Stenopterygius. We know so much about them, yet they get overlooked by media all the time.

[@billyr2904]

Or just... ichthyosaurus.

[@jethrojangles9541]

"corrections" is a very humble way of saying "we redid the thing but 2x the length & 4x the research". Love the channel, thank you!

[@lobomella128]

"...broken or bent bones heal at all kind of WACKY angles." - that's the fun kind of science I come to this channel for. I love YDAW 🥰

[@sampagano205]

Dimetrodon Teutonis is something I desperately wish I could interact with because they sound adorable.

[@wheatunrye]

I love that y'all are going back and revisiting these old videos. I wish more science based KZbinrs would do this because there are so many videos from 10 years ago with outdated info that show up first in a search because they have so many views just because of time.

[@firytwig]

4 uploads in 2 months? It’s a miracle, absolutely love your stuff :D

[@DryptosaurusDavid]

I can’t wait to see what Steven has next for the regular show and the reuploads.

[@AndrewTBP]

The next re-upload should be _Dilophosaurus_ as they're doing them in order so far, which makes sense to me. 😉

[@jeffreygao3956]

@@AndrewTBP No, actually Dilophosaurus was done already; I'm inclined to think Parasaurolophus.

[@martijn9568]

​​@@AndrewTBPteranodon it is then!🙌

[@pss360]

I'm getting a dimetrodon tattoo in a few days so this is great timing!! Very excited

[@gianlucaconsiglio8335]

Always a good day when there's a new YDAW video

[@KidarWolf]

I would love to see a revisit of Dimetrodon. I learned so much about this creature today that I hadn't known before, and I have a newfound respect for it as a taxon. What a fascinating and enigmatic taxon it is.

[@fireballninja01]

Dimetrodon was my favorite prehistoric animal for so long, lovely to see you give it more of it’s due. Thanks for the new animated segments, always a treat!

[@Albinojackrussel]

I think the meters vs feet situation is pretty relatable and endearing. Sometimes yhe outtakes make good intakes in secret. It can make things feel more approachable when the educator comes across as human and fallible themselves.

[@annadachowska24]

The "this isnt dinosaur" *outro rolls out* is still making me laugh so much

[@arcadedelprof]

i vote for corrections like these to get a segment called : YDAW SOS (shame on steven) i found the way he said it so adorable i hope it sticks

[@SushiSnake]

You're still, hands down, my favorite person to go to on paleontology that deals with anatomy and inside looks to fossils and how they once existed. You stay as up to date as you can be, describe everything simply for us, AND give citations. Thank you so much for what you do, I hope to see more for a long time still!!

[@LionidasL10]

This might be one of the best self-correction videos on the internet. Thanks ydaw!

[@rileyernst9086]

I love it how the original episode was an unapologetic beat down on synapsid inefficiencies and deficiencies. But it's nice to see dimetrodon getting some love.

[@benny_lemon5123]

I'm writing a comment to replace the comment I was ABOUT to make, regarding the awe-inspiring size of dimetrodon- and then you corrected yourself to 10 feet lmao This video still deserves the engagement so, 👍

[@ArchFiendAF]

i love dimetrodon, glad to see you give it the credit it deserves

[@darealshinji]

I totally want one of these cat-sized dimetrodons as a pet. Maybe in combo with a cute feathered micro-raptor.

[@jensphiliphohmann1876]

This wouldn't go well for the Dimetrodon since the Microraptor was probably way more agil and would end up stealing the Dimetrodoh's food all the time.

[@terdragontra8900]

i want a microraptor very badly

[@Pemble_]

Love your attitude when reflecting on your old vids. And especially love how you expand upon the original content so thoroughly. Great vid!!

[@jrbaxterstockman548]

2 more to go until my favorite, Parasaurolophus! If my summarization of research updates since then is correct, they are beefier, chonkier, and hoof-ier than ever.

[@arrahnuuk]

I love these, because they serve as a great reminder that the data is always being refreshed and keeping up to date is an ongoing thing.

[@stuchly1]

I appreciate these more recent videos so so much. Much much better than the original ones, my heart was breaking for your past self but you have made incredible progress with your on camera presence. It's honestly giving an awkward sob like me lots of hope I can do this sort of thing too one day. I think it's really fantastic you're able and willing to record corrections of these videos and even add some new discoveries into the mix in the process. I love this channel. Great work all around and the visuals are fantastic as well

[@TheRenegadeHamster]

So cool! I loved this. Always exciting to hear the up to date science on familiar creatures. And it's great to revisit old episodes of this fantastic show with that view in mind! The animated graphics are always lovely and appreciated. Thank you!

[@forcelightningcable9639]

I absolutely love everything about that episode, from production to delivery.

[@natedrawsthings]

I'm glad you did this. Such an awesome animal, I'm always happy to learn more about it. Could it swim?

[@Gildedmuse]

Most vertebrae can swim. Those that can't tend to be either too heavy (ala hippos, which evolved to be too heavy, since, you know, elephants manage just fine) or, um, really strange (giraffes, I believe, can't swim, because of how they would have to bend their necks).

[@jeffreygao3956]

Probably. Dimetrodon favored swampland; Don't believe too much of Life Before Dinosaurs.

[@theamericanwordsmith2670]

Keep the good stuff coming! Love these lookbacks at previous classic episodes!

[@AndrewTBP]

Excellent video. You spoil us with your re-uploads.

[@loganflynn7294]

I've really enjoyed these update/correction videos so far, so I'm glad to see the animal I think really needed it the most finally getting this treatment. Looking forward to the next one of these and the next new creature. Hopefully Dimetrodon's cutout finally gets to be put up on the wall now that it's been updated. It's always been missing since its debut episode, so it would be nice to finally have that hole filled.

[@Dedicatedfollower467]

dimetrodon! one of my favorite prehistoric animals of all time! so good to see it getting an update from you. great stuff!

[@bensantos3882]

I wish this show blew up like it deserves back when it first came out. I mean by that time his show would generate compribable numbers with the rest of the biggest science and other popular channels. To this day I always wonder why this show or series died off from other interests. I say that because it had an early start and the whole Jurassic World has been running for years.

[@marcospinheiro352]

Very good video with the new updates of this iconic and well-known synapsid! I didn't know about the missing tail on Dimetrodon specimens and its mystery. That surprised me. Love the animation, the reconstructions and the paleoinfos you bring as always! Well done! I'm looking forward for the next species video! :D

[@aitan6593]

I liked your original video and style, but it’s really interesting to see it juxtaposed to your rigor and polish today. Analytically and productionally. I really appreciate the very unique aspects of this kind of video - where it’s an original and extensive additional commentary - for this reason. Really cool to see your progression, and very well done. Both then and especially now.

[@abruwer08]

Nice! was just complaining about my kids puzzle that features a T-rex, some pterosaurs and a frikken dimetrodon together.

[@takenname8053]

SUPER NICE, always loved Dimetrodon!

[@alifeoncechris]

Let’s go! New content from my favorite dinosaur channel.

[@thefave2]

This was excellent. Thank you!

[@ptonpc]

It was good watching the video. Ahh memories when we were young and full of vigor.

[@crystalheart9]

I had one of those in my plastic dinosaur set when I was a kid. They had the name stamped on it's belly so I remembered what it was.

[@TransSappho]

12:59 Oh my god it’s the “Edaphosaurus” toy I sent in a while back!!!

[@TransSappho]

I can’t remember what else I sent offhand, I think I including that one lumpy Ceratosaurus too but it’s been years since I sent them and since I saw the mailbox video for it. Either way it’s great seeing it used as a demonstrative here and to see someone express equal consternation to mine over it being labeled Edaphosaurus rather than Dimetrodon. I mean, come on, look at those teeth

[@SHDUStudios]

I absolutely love these reuploads, they temper my ever insatiable hunger for new YDAW content.

[@aaronodst1174]

Very much enjoying the archive episodes

[@msgen02]

Dimetrodon my beloved❤

[@princesslava15]

"This isn't a dinosaur." *outro music* Made me chuckle this time as well. :)

[@Eelofoppo]

Hey great work guys! I'm loving this. I have some questions: 1. How do paleontologists determine which animals are part of the same genus abd which are different genra? 2. What animals would have "replaced" this in the ecosystem? 3. What do you all see for this show going forward? 4. What sort of "trends" have you seen in toys over time? Is it just reflective of pop culture depictions or something else? Also can you do a Megaraptoran or some other forgotten-about group? Thanks again for all the amazing work ❤

[@starrywizdom]

On behalf of my ancient Pelycosaur ancestors, thank you. If you don't get around to Dimetrodon again, that's okay -- this channel is not called "Your Permian Synapsids Are Wrong"!

[@billyr2904]

Pelycosaur is paraphyletic, because within it includes the therapsids, which are not considered as Pelycosaurs. So the term 'Pelycosaur' is informal.

[@fernbedek6302]

Are we *sure* it’s not meant to be a quadrupedal spinosaurus? 😆

[@jeffreygao3956]

I'm sure! Dimetrodon's more like a kitty cat.

[@BearDrivingACar]

Nah thats Arizonasaurus

[@beneficent2557]

Spinofarus you mean?

[@symeou._.p2005]

It's him, officer.

[@michaelbaker7499]

Dimetrodon is one of my favourite extinct animals, and the new findings about it just make me like it more

[@AndriaTheKobold]

WOOO another YDAW! I love this channel. It combines my nerdy love of dinosaurs with my passionate obsession for things to be ACCURATE. Seriously. I'm that annoying girl in the room who has to speak up and go "that's wrong, wow that's not likely, it wasn't THAT big" etc etc. It drives my bf crazy lol

[@starrywizdom]

I love it when people do that -- I HATE not knowing something I think is right is wrong if it's really wrong! I used to always pipe up about inaccurate ideas other people had, on the assumption that they, too, would want to know the RIGHT information, but boy was I ever wrong. I try to keep my corrections to myself now, but sometimes I can't keep my big mouth shut & gotta bust out...

[@EnterTheDream]

Will never not love this series

[@thedarkmasterthedarkmaster]

Shame we'll probably never see another one of these non dinosaur type videos in the future

[@firytwig]

Maybe not never, they have considered doing a marine reptile as a possibility

[@azhdarchidae66]

pteranodon archive is coming at some point

[@torymiddlebrooks]

It's always a fun time when you take a second long at something.

[@Maverynthia]

I like that white dimetridon, it so pretty. Seeing the little misspeakings in the old work is nice.

[@jkosch]

We (Bernd Wolterdesign, a company that mostly builds reconstructions of extinct animals for parks and museums) recently (this year, 2023) did a new reconstruction of _Dimetrodon_ . We consulted with Christian Kamerer (basal synapsid specialist) and he said the extraoral tissue would most likely follow the bony edges of the jaw rather closely, but be extneded enough to cover the teeth when the mouth is closed not unlike certain extant squamates and that truly extensive oral tissue of the mammalian sort would not have evolved until cynodonts. So the little step in the rostral end of the maxilla would be visible (but not quite as pronounced ) with the "lips" in place.

[@gretchenwetzel7313]

I love this! What a great example about being humble about your knowledge (and that of… all science) and demonstrating openness to learn and change given new info or less dogmatic influence. Nerdy content with a wholesome message about the scientific method… what’s not to love. Also, that glow up though!

[@BryonGarrison-v6i]

Dimetrodon has always captivated my imagination.

[@Rahru]

Funny side-note: I have one of that green-bodied, brown-sailed toy (which looks like a bigger version of the one used on the original video) and it is actually labeled as Metriacanthosaurus under its stomach.

[@catarinacorreia2747]

great video as allways

[@da_ostrichyeet7999]

Great video!

[@billyr2904]

Our long lost cousin!

[@joearnold6881]

What’s up with heterodontosaurus? I wanna know how it got so many kinds of teeth and a beak Are there toys of it? Somebody send in a toy. I wanna hear about that little dino 😊

[@paleoph6168]

20:18 Good to hear that Romer was against such a "scientific" view. He was ahead of his time.

[@ttttttttp2]

Its nice to be here this early

[@SuperLoops]

dimetrodon was always my favourite notdinosaur in my dinosaur book when I was little the dimetrodon looked super friendly it had this like happy ah ha expression. if I lived in the permian I would tame one and keep it as a pet

[@hamouz1999]

Maybe it was a messy episode but we love it anyway ❤❤

[@erichtomanek4739]

Trimetrodon lives! Now give us that toothy grin!

[@magentamoop]

I would LOVE a YDAW deep dive on the dinosaurs and non-dino-reptiles in the new Paleo Pines video game. They are obviously rounder and softer and cuter and rainbow colored but, all things considered, I was impressed with their representations compared to most toys.

[@dracodracarys2339]

"This isn't a dinosaur." **end credits roll**

[@MadSpectro7]

This channel has made me wonder what early tetrapods used their tails for. I read that salamanders use them for fat storage and display (among other things) and that seems like a good enough explanation for a basal function.

[@CromoPaleoShow]

“If dimetrodon is senescent, decrepitude would appear to be a blessing” Totally agree!… After many definition searches on Google, I can confirm dimetrodon could make more sense of that sentence that I can 😂

[@tigrecito48]

dimetrodon was my first dinosaur toy when i was a kid

[@rexyjp1237]

That isnt your first dinosaur toy

[@samwill7259]

The idea that animals in this time period had worse hearing just as a universal baseline screws with my head. If you sent a human back to this time, would we be hearing more of the world around them than any creature at the time ever got the chance to? Do animals now have a higher base sense of smell? Sight? How much has the observation through which the animal kingdom observed the world changed as natural selection has further refined our senses?

[@patreekotime4578]

Interestingly.... there probably wasn't much to hear in those ranges anyway. No birds. No crickets. No frogs. You'd be the only creature alive to hear the wind whistling through a canyon.

[@saltrocklamp199]

@@patreekotime4578 that's such an incredibly weird thing to imagine. And here I was just getting used to the idea of a time before grass existed.

[@martijn9568]

​@@saltrocklamp199That reminds me of some of the really weird tree species that existed and were prevalent back then, such as horse tails. Our world has changed so much, unrecognisably so.

[@hasta_la_victoria_siempre]

patiently waiting for the clock to strike 12

[@TyrantLizardProductions]

"Congratulations your a synapsid"😂😂

[@napalmholocaust9093]

Is the ability to comment during a "live" show a new feature or one that is usually turned-off? I've never seen it before, usually comments don't appear till after it is over. Good work on the details. That's why I subscribed 👍

[@samfritz645]

A dimetrodon once bit my grandma.

[@starrywizdom]

Did she time travel, or are you descended from one of Dimetrodon's prey species? Asking for a friend.

[@EriktheRed2023]

Was that before or after the reindeer incident?

[@aaronrattley8580]

Aged like fine wine :) what a handsome guy

[@aceundead4750]

What was really funny was in the old one before implying it was waiting for the dinosaurs you said it was probably a top predator lol. I shuddered at the thought of a wrinkley mammal skinned dimetrodon, a naked mole dimetrodon if you will

[@ogrejd]

Dimetrodon always has been and always will be the best dinosaur, no matter what its proper place in the evolutionary tree and time says. :P

[@tomatosoup44]

One small correction (I think, I'm not an expert) is that the two openings alluded by the term "diapsid" refer to the supratemporal fenestra and the lateral termporal fenestra and not to the lateral temporal fenestra and the antorbital fenestra. Synapsids lacked the supratemporal fenestra (as well as the antorbital fenestra).

[@ronniepatterson2827]

Hey hey my guy. Dont sweat it about those pesky mistakes & corrections. Being wrong yet assuming you are right, is the very essence of paleontology as we know it, & untill we invent time travel, thats the way it will always be : ) Now about that name change from the word your, to the word all, I been harping on for years now. Anytime you ready, im here for the upgrade my dude.

[@ronniepatterson2827]

Also my dude, I get saying All Dinosaurs Are Wrong may not sit well with some, but if you dont like saying the truth in that way, saying"Our" Dinosaurs Are Wrong, should work just as well as Your Dinosaurs Are Wrong if not even better lol. No pedistals or supreme guesser titles, equals more subs imo lol Have a good one sir & you're quite welcome.

[@ronniepatterson2827]

Holy S**t! What kind of mumbo jumbo am I spewing out on that last cony sentence? I need to edit that, but Im leaving it in shame, shame, shame , shame, shame, shame, . . . Yall nice people, I can tell. Everything in good ol trolling fun, except the last sentence I cant take back, & did I mention the shame ? Im chalking it up to the paleo crowd of hard heads I know personnelly. -they getting worse btw

[@VolCanixWorx]

😂😂😂😂 Poor Dimetrodon, always in the with wrong crowd 😅😅

[@kuitaranheatmorus9932]

These correction videos are just incredible, just shows how paleontology has changed so much But yeah this video was cool, and I wish you have a great day

[@rae3202]

Please tell me this channel isn't done

[@Neriedar]

Man confounded by ankles! Solidarity by modern man and Victorian gents😂

[@annayosh]

What's an ignotaxa (10:08)?

[@StevenBellettini]

Ichnotaxon, an organism known only from traces, rather than body parts. Usually footprints for the animals we talk about, but also stuff like burrows.

[@annayosh]

@@StevenBellettini Thanks!

[@napalmholocaust9093]

I thought nasalturbinals were for exotherms and temp regulation? Their sail has been dethroned for that purpose last I knew.