Chilesaurus: The Perplexing Dinosaur Platypus

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Chilesaurus was a small, herbivorous dinosaur from Late Jurassic South America. Despite its unassuming appearance, it is was easily the strangest of all dinosaurs due to possessing traits from numerous dinosaur lineages. The discovery of Chilesaurus has led to a major upheaval in science's understanding of dinosaur evolutionary relationships, to such an extent that even the definition of the word "dinosaur" had to be revised.
Thank you to the themattalorian for narrating this video.
Sources:
www.researchgate.net/publicat...
www.ncbi.nlm.nih.gov/pmc/arti...
www.ncbi.nlm.nih.gov/pmc/arti...
www.ncbi.nlm.nih.gov/pmc/arti...
repositorio.uchile.cl/bitstre...
www.researchgate.net/profile/...
academic.oup.com/zoolinnean/a...
00:00 - Introduction
00:56 - Discovery
02:36 - Skull
03:16 - Forelimbs
05:00 - Legs
05:58 - Hips
07:04 - Theropoda?
08:20 - Basal Ornithischian?
11:10 - Derived Ornithischian?
12:56 - Sauropodomorpha?
14:06 - Ghost Lineage
15:07 - Conclusion
15:59 - Outro

Опубликовано:

25 июн 2024

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Комментарии : 121

@maurissauro Год назад

Although we did recover Chilesaurus among heterodontosaurs, we state in the paper (Norman et al 2022) that our dataset lacks theropods and we agree with the original authors of Chilesaurus that it is more likely a theropod

@davidsheckler4450 Год назад

"recover" 😂🤣😅😂🤣😅😂🤣😅😂🤣😅 "recover" 😅🤣😂😅🤣😂😅🤣😂😅🤣😂 "we" 😂🤣😅😂🤣😅😂😅😅😂😅😅 you need help

@adriani9432 11 месяцев назад

Cool! A new clade of herbivorous beaked theropods! Perhaps a basal oviraptorosaur?

@davidsheckler4450 11 месяцев назад

@@adriani9432 What a babbling hypnotized Sheeple 🤣😂😅

@myst1c164 3 месяца назад

what are u even talking about lol @@davidsheckler4450

@Brachiophore 28 дней назад

@@davidsheckler4450 Care to explain what you mean by that?

@MrTommygunz0482 Год назад

Man I feel sorry for the alien paleontologist 1 million years from now that has to convince someone that a Pug and a Mastif are the same species

@rac1equalsbestgame853 Год назад

And that they both closely related to wolves and coyotes

@MrTommygunz0482 Год назад

@RaC1equalsbestgame it's gonna be crazy, "you're trying to tell me this little thing, this giant monster, this ball of jaws and teeth and this squat faced deformed creature are all the exact same species" scientists then promptly losses his science license and is ridiculed for 50 years.😆😆😆😆😆

@YaBoiDREX Год назад

They aren’t even different sub species that’s the crazy part

@YaBoiDREX Год назад

They aren’t even different sub species that’s the crazy part

@phantom0456 11 месяцев назад

It won’t even necessarily need to be an “alien” paleontologist, as it’s quite possible that multiple civilizations and intelligent species have risen and fallen over the course of Earth’s long history.

@just_a_guy9688 11 месяцев назад

Damn, that 7 year old kid who discovered this lived the dream so many of us had when we were kids.

@threebythestreet 8 месяцев назад

Yeah, but he would have had to wait till he was in college to see the animal named and discribed by paleontologists.

@TheAnimalKingdom-tq3sz Год назад

Heinz Doofenshmirtz:"What? A Chilesaurus?" *Chilesaurus puts on a hat* Heinz Doofenshmirtz: "COLE THE CHILESAURUS!!"

@matthewwelsh294 10 месяцев назад

Lol that's funny

@seanmckelvey6618 Год назад

I'm kind of inclined to agree with the paper that placed Chilesaurus as a weird, basal tetanuran theropod. It's features are certainly strange, but given that we know theropods evolved herbivory at least a couple of times it really wouldn't surprise me if we eventually discover evidence that it happened many more times throughout their evolutionary history. Really though, until we have a much larger dataset of fossils to draw on all the hypotheses are just as reasonable as each other.

@floflo1645 Год назад

I also think the theropod hypothesis is the more reasonable one.

@rac1equalsbestgame853 Год назад

Considering the just as weird therizinosaurs that even redeveloped the 4th finger for walking are also therapods, these superficially not as weird dinosaurs could be another therapod lineage that went back to hervibory

@davidsheckler4450 Год назад

You can't prove fake-a-saurses

@hfc2x Год назад

Chilesaurus was discovered in the Aysén region of Chile, which is where my brother was living for a while. He likes hiking and all sorts of outdoors activities, and at one point he took a lot of pictures of shellfish fossils completely covering the floor high up in the mountains, in the middle of nowhere, very far from civilization. There's so many paleonthological discoveries waiting to be made there.

@Eshkanama Год назад

Thank you for referring to birds as “modern dinosaurs”.

@Scratch334Original Год назад

I guess, for me personally, having limited material on such unique creatures is very upsetting

@julianshepherd2038 Год назад

It's a hard life.

@jensphiliphohmann1876 Год назад

I'm astonished. I would never have expected that such an animal lived during the Jurassic.

@KellyClowers Год назад

Right? Seems like it ought to be in the Triassic!

@FernandoMazzo175 11 месяцев назад

Spinosaurus seeing how Chilesaurus is a competitor for the title of most confusing and bizarre dinosaur ever: *Finally, a worthy opponent! Our battle will be Legendary!!*

@xevious1538 Год назад

I agree with its original classification of being a Tetanuran Theropod. Tetanurans are notable for having three fingers or less. Chilesaurus has two, with one vestigial. They also lack a predentary bone of ornithiscians and have a pretty large anorbital fenestra (Ornithiscians generally have it reduced or absent). I think Chilesaurus just throws people off due to it filling a similar herbivorous niche of basal sauropodomorphs and basal ornithiscians, and sharing some convergently evolved features with them. But the traits like having a long neck, a beak (which have evolved independently in many different dinosaur lineages), and its backwards facing pubis (which theropods like Therizinosaurs, Birds, and Dromaeosaurs also have) can easily be explained through convergent evolution.

@TheAnticlinton Год назад

Thanks for the video. I was surprised this dinosaur which put 100 year old of taxonomy in doubt isnt focused on. It seems like the kew to understanding the dinosaur family tree is uncovering more chilesaurus relative and a silesaurs that are transitional with ornithischians, as well as finding a complete pisanosaurus skeleton.

@theangrysuchomimus5163 Год назад

Imo, Chilesaurus was more likely to be a saurichian than ornitichian, because most of the feature associated with ornitichia it has have evolved independently in many theropod groups (beaks, herbivory, backward hips, four toes on the ground, etc.). Though experts probably know better than me.

@timbobshe Год назад

Making the hybrids in the Jurassic World Game not as messed up as previously thought haha

@lyssao.8308 Год назад

i still think so, because that produces doomed offspring that wouldn't survive the fetal stage even if lucky. None of the hybrids were related enough to eachother smh.

@timbobshe Год назад

@@lyssao.8308 …I was joking >.

@Abrce Год назад

Different kind of species were discovered here in chile, some more stranger than others, its look like south america was always a laboratory for nature...greetings from chile, exellent video dudde...

@AntoekneeDetaecho Год назад

Fascinating creature that surprises us with its relative youth; when we start talking about the relationships between the major groups, naturally all thought turns to the Triassic, but it just goes to show how much we still have to learn and hope that we can uncover significantly more basal ornithischians in our lifetime! Thank you for making and sharing

@DragonFruitXVI Год назад

It's probably its own branch that just happened to make it that far. Like how we have tuatara today.

@dinohall2595 Год назад

The debate over the dinosaur family tree is one I'm always excited to spectate. That being said, I hope we do find new fossils/new information/improved phylogenetic methods so the mystery can eventually be solved. 🤞

@generaldissatisfaction5397 Год назад

Please do a video on Desmostylia. The only order of marine mammals to go extinct.

@birbdad1842 Год назад

That sounds interesting.

@floflo1645 Год назад

I have never seen him cover Mammals

@AifDaimon 5 месяцев назад

@@floflo1645proto-mammals, yes

@dinohall2595 4 месяца назад

This is the reptile/stem-mammal channel. Although I do agree, Desmostylia is a fascinating clade. Ben G. Thomas and Animal Origins both did good videos on it already.

@pickles_8472 Год назад

so glad that sauropods are still dinosaurs.

@jelmerwouda8635 Год назад

That børksuchus looks like it was a very good boi

@kuitaranheatmorus9932 Год назад

Chilesaurus was pretty cool & I really think this video was very good at understanding what is Chilesaurus. But yeah, hope you have a good day

@adamadams6740 2 месяца назад

I love when the weird stuff pops up,there is still so much for us to find and learn out there!

@Piperdogloveshats Год назад

I’ve never seen this dinosaur covered in RU-vid. Very interesting and well done!!

@Eustreptos Год назад

as always, Chimaerasuchus and your great videos!

@KellyClowers Год назад

Fascinating stuff, and great coverage, thank you!

@dinonadoop Год назад

I know it's completely superficial but I'm glad to have Chilean heritage after learning about this dude. Just as fucked up as my family makes chile out to be

@Catson-Edits Год назад

I love your videos! Thanks for teaching me about this unique and confusing dinosaur.

@technologic21 Год назад

Very strange evolutionary morphology indeed!

@zoology7764 Год назад

This channel is one of the best if not the best paleontology youtouber out there and another amazing video ❤❤🎉🎉

@rileyernst9086 Год назад

Ha ha I thought it was Chinlesaurus until you said it came from Chile and I was like: what the hell, that ain't right. Certainly a weird critter. The idea of a ghost of basal ornithiscians liniage might seem a bit far fetched, but not really when you consider that we have Jackapil in the candeleros formation setting up a ghost liniage of basal thyrieophorians.

@JorgeMorenoCGArtist Год назад

Chilesaurus was an amazing creature! Please make a video about the biggest species of sauropods.

@mlggodzilla1567 Год назад

Another great video 😎

@xHugoxN7 Год назад

Learned a lot, thanks!

@marcosalerno4254 Год назад

Amazing dinosaur and amazing video!

@Alberad08 Год назад

Wow, that was quite interesting- thanks a lot!

@fermintenava5911 Год назад

This constant reshuffling of groups and families is fascinating, but admittedly exhausting. It's no wonder the public can't follow it anymore, and it will take years before we'll exactly constitutes a dinosaur, and if Sauropods will be the equivalent of what pterosaurs are to dinosaurs: related, but not true to branch. 😅

@thelaughinghyenas8465 Год назад

A very interesting and well done video about a weird dinosaur. Kudos to the narrator. I see why it is perplexing but I don't understand why it is seen as basal. Didn't a lot of the weird ball traits first show up in earlier dinosaurs?

@TheOuroboros84 Месяц назад

"Spinosaurus is the most problematic taxon" Chilesaurus: "hehe hold my beer"

@SRMC23 Год назад

Im gonna jump on a leg and say that Chilesaurus may have been its own derivation from the Sauropodomorphs, at least down here in Gondwana. That is, assuming we find some previous specimens that prove some kind of miniaturization process on them due to competition from true Sauropods. This may have been a little process that only happened in certain species while most of the big ones were more or less fine until the big carnivores started to pop up, Chilesaurus's ancestors may have survived by becoming smaller and nimbler in a convergence similar to the Ornithischians or the later maniraptorans but still carrying most of the adaptations for the fermentation of plant material that the Sauropodomorphs were developing.

@petrfedor1851 Год назад

Paleontologist: "So what clade of dinosaurs you belong to?" Chilesaurus: "Yes."

@anthonyhall7019 Год назад

I dislike how much argument there is in the paleontology field because another of the time people are just guessing BUT that is what makes it absolutely wildly intriguing!

@bearhustler 11 месяцев назад

That was very interesting. I still find terms like Clade and Derived slippery though i get the rough idea. Would you do or do you know of a good 'taxonomy for dummies ' video ?

@wither5673 Год назад

''taxonomic chaos'' is a good thing, the best part about science is you are never out of a job, because some one will find something that shakes the status quo, and the truth dose not care about the ego of a disgruntled scientist.

@julianshepherd2038 Год назад

Spelling contests with dino profs must be fun. That's sarcasm btw.

@wcdeich4 Год назад

Was the Ornithoscelida hypothesis largely based on Chilesaurus?

@preyes164 Год назад

CHILE MENTIONED YEAAH 🇨🇱 🇨🇱 btw love the video :]

@Shadeem Год назад

every other discovery these days " What the hell are you even?! "

@mattsavigny6084 Год назад

Ok now we need a Perusaurus to bring the pisco wars back into Mesozoic era.

@HassanMohamed-jy4kk Год назад

Are you going to think of a suggestion making a RU-vid Videos all about Geosaurus (A Marine Crocodile and/or A Sea Crocodile) on the Next Chimerasuchus Next Saturday coming up next?!👍👍👍👍👍⭐️⭐️⭐️⭐️⭐️

@011keepers Год назад

I doubt those hands could do anything, they are way to short to be used for anything..

@maozilla9149 Год назад

cool

@DAVIDPETERS12C 11 месяцев назад

Baron and Barrett 2017 nested Chilesaurus basal to Ornithischia two years after ReptileEvolution did the same. The sister group of Ornithischia is the Sauropodomorpha, both members of the Phytodinosauria.

@DAVIDPETERS12C 11 месяцев назад

Jeholosaurus is a close relative.

@OdeeOz Год назад

*Fascinating description & commentary on a dinosaur I never heard of until now. However ... Why do no Paleontologists ever explain that Beak nose tip? Things like Why was it developed, and used for are left in the dust with their bones. That asked ... Was it to protect the snout from it's food source scrounging? Perhaps it served as a sapling, or tree bark cutter, to give it access to the softer inner food source? There are many more questions, but those are my key ones for now.* 👍👍 5⭐

@chimerasuchus Год назад

The likely evolved to serve a role analogous to incisors, which most dinosaurs lacked (with the notable exception of the appropriately named Incisivosaurus).

@OdeeOz Год назад

@@chimerasuchus Good analogy. But don't those beaks look more like what a Turtle Skull has? 🤷‍♂ 👍👍⭐

@saladcat8305 Год назад

Maybe they mixed up the bones though?

@chimerasuchus Год назад

The Chilesaurus holotype was articulated.

@Borkiiborksquitealot 8 месяцев назад

I thought its obvious that all these quadrupedal herbivore dinosaurs evolved from similar dinos that were omnivore but got to fully herbivore diet and started walking on all four to support thier weight over time. By the way, sauropods evolved the same way from similar light bipedal omnivores if you didnt know

@jeremyjimenez8153 Год назад

Is it possible that it’s an early offshoot of the therizinosaurs?

@imfeelinggood110 Год назад

Somos el mejor pais de Chile hermano

@nathancomixproductions466 Год назад

First of all, I do not support the "Ornithoscelida" theory. Secondly, I believe that Chilesaurus is a basal hypsilophodontoid (see below), which kind of explains the missing predentary bone. Dinosauria --> Ornithischia --> Cerapoda --> Ornithopoda --> Hypsilophodontia --> Hypsilophodontoidea --> _Chilesaurus diegosuarezi_

@verihimthered2418 Год назад

I'm excited to see dinosaurs with fur in 10 years 🌋

@nephuraito Год назад

No predentary, 3 digits in their forelimb: Theropod

@nightshadeentertainment6568 Год назад

Asking for a Rutiodon Video again please

@maxnum1sgameclub263 Год назад

Oke… we got one weird dinosaur in jurassic world evo 2, now its time to bring this one in. For free or in dlc i really dont care i need this in my dino petting zoo (of terror en mutilation)!

@amirazhar8377 Год назад

Wonder what role it play in the ecosystem? The platypus of the dinosaur world 😅

@f.u.m.o.5669 Год назад

Birds were another Theropod to evolve four toes supporting the animal.

@ridleyroid9060 5 месяцев назад

I think Chilesaurus just needs a good therapy. It's ok sweetie, we all have an identity crisis here and there!

@UniDocs_Mahapushpa_Cyavana Год назад

Maybe the main dinosaur 🦖🦕 clades are so close to each other when they diverged, they could produce a hybrid lineage that persisted on? It would explain why highest level dinosaur taxonomy 🗄 is such a mess if the clades were basically sister lineages that diverged at hyper speed.

@brianedwards7142 Год назад

"BERK!!!" "Ooh globbits, it's 'im upstairs." "FEED ME!"

@casey5654 11 месяцев назад

Is anyone or has anyone decided to do the genetic analysis with the excluded branches of dinosaurs now included? I haven't looked yet at the studies done or done a little homework to see if anyone is planning on further studies. But if it is as you say, it seems like a logical and easy step Even if it's the most basal ornithiscian it doesn't look like early ornithiscians. Really? That is a pretty strange thing to say, is it not?

@abelchavez8786 11 месяцев назад

I have a Chilesaurus on me too ;)

@___Somebody___ Год назад

I love dinosaur science but why do they have to make such complicated word I'm lost

@Viniciu3393 Год назад

Make Stahleckeria the Brazilian Dicinodont

@1998topornik Год назад

Triassic like weirdo in jurrassic period.

@abdulazizrex Год назад

Super early

@toddduchesne1749 Год назад

Unbelievable amount of speculation. Are you making this up as you go?

@carliegriffin7229 11 месяцев назад

🎉🎉🎉🎉🎉🎉🎉🎉

@dinosaur_man321 Год назад

chad

@Huy-G-Le 10 месяцев назад

You can always expect South America, to be rich in weird species. And in minerals. And in Labors. And in everything that should have belong to it's people, but instead are own by British and American Wealthiest.

@coomsday5182 Год назад

I might be saying complete bs over here, but chilesaurus might have been an ancestor to therizinosaurids. First off, they lived in Chile (modern day Europe), and therizinosauroids lived in Asia and North America, chilesaurus might have moved over to Asia, re-evolved it's until then unused third claw, and evolved a taller posture. Again, I'm kind of in the dark with this theory, but I think it is at least plausible.

@chimerasuchus Год назад

Basal therizinosaurs, such as Fukuivenator and Falcarius, have already been found and they are not very much like Chilesaurus. Also, Chile is in South America.

@coomsday5182 Год назад

@@chimerasuchus About the basal therizinosaurs: thanks for the info! About the fact that Chile is in South Africa, I'm just emberassed about myself.

@brianedwards7142 Год назад

They might be introduced but I have a soft spot for spoggies. ❤🐦