Dakosaurus: The Dinosaur-Headed Marine Crocodile
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- Опубликовано: 29 июн 2024
- Dakosaurus was a metriorhynchid, a type of fully marine reptile related to crocodilians. It consisted of two species, Dakosaurus maximus, who lived in Late Jurassic Europe, and Dakosaurus andiniensis, who lived in Late Jurassic and Early Cretaceous South America. Unlike the rest of the metriorhynchids and other prehistoric marine reptiles, Dakosaurus’s skull was short and deep, a shape vaguely resembling that of theropod dinosaurs. Despite their similarities, the closet ecological equivalent of Dakosaurus was not crocodilians or predatory dinosaurs but orcas, the killer whales.
Narration by Michael T. Downey (dropdadgorgeous.com/voice-demos)
Sources
journals.plos.org/plosone/art...
royalsocietypublishing.org/do...
www.nationalgeographic.com/sc...
www.researchgate.net/publicat...
www.researchgate.net/publicat...
www.researchgate.net/publicat...
phys.org/news/2012-09-ancient...
earthtimes.org/scitech/orca-s...
www.researchgate.net/publicat...
www.jstor.org/stable/40864360...
anatomypubs.onlinelibrary.wil...
00:00 - Introduction
00:48 - Species
01:26 - Body
02:35 - Skull
04:20 - Diet
06:30 - Salt Glands and Evolution
07:20 - Metabolism
08:42 - Conclusion
09:10 - Outro
When you really think about it, it's honestly pretty fascinating that despite it's similarities to mosasaurs, dakosaurus is more closely related to triceratops.
Evolution be wild
Wait is dakosaurus a crocodilomorph?
What i think is amazing is that all modern crocodiles still have legs and not flippers. You would think evolution would be showing by now
@@alphatrion100 Well, this is because modern-day crocodiles are filling the niche of semi-aquatic creatures.
@@change.mp4 Yes.
"Dakosaurus is a scavenger." - Jack Horner
"Off Brand Mosasaur" nicely done 👍
It had obviously had significant time to adapt to it's open ocean environment.
Orca eco types are super interesting. There’s the Type 1 and 2 in the Atlantic, Offshore, Resident, and Transient in the pacific, and Type A, B, C, and D in the southern ocean. I’d never thought about how marine crocs like Dakosaurus were allegorical to each other before!
I was blown away by that too!
really enjoying downey's guest narration, as much as i love your own narration, you should have a variety of narrators on for different videos in the future!
I think he did the narration himself first, then passed it on to his brother, now this. I personally prefer the new narrator, since his brother had some trouble with the right pronounciation. And since it's an educational video, pronounciation is still important, although not as much as the information itself.
@@birbdad1842 Pronunciation is absolutely irrelevant. He has a unique voice. This narrator is very generic imo
@@joshuakarmann7488 Yeah, no.
when I first saw a Metriorhynchus in Chased by Sea Monsters I was amazed by the fact that some croc relatives took to the seas. of course, I've heard of the Saltwater Crocodile but never a croc fully adapted to life in the ocean.
Another amazing video! I love crocodilians and their ancestors and relatives and Dakosaurus was really a great and badass predator! ❤️🐊
Yes this is the first of this channel I have seen and the content is of a high standard, interesting and presented well.
I love metrirhynchids. I also like the new narrator, but don't stop making some videos with your own voice! It was really enjoyable!
Godzilla: "Who are you?"
Dakosaurus: "I'm you but smaller."
Pluse no laser nuke that come from mouth
And no osteoderms.
Marine Iguana: well I am the original Godzilla
@@mhdfrb9971 Dakosaurus: Are you challenging me?
Your RUclips name almost makes it seem like this could be an art project where you just come up with crocodile monsters.
Getting this guy to read the script gives the channel a much more professional vibe! Great content as always, but so much more consumable when there is also a great reader.
Imagine if even half of these types of creatures were still around.
I just absolutely adore those crocs that lived fully in the sea..thx for the video and pls make more !
Awesome vid. Great narration and use of visuals. Excellent work.
I like the orca comparison. Speaking for myself, I have been far more interested in the terrestrial animals of deep time, but have found quite a lot of love for orca of modern oceans. It is crazy what evolution can do if you give it enough time. The creatures of these earlier eons are just endlessly fascinating.
Another absolutely amazing video keep it up
Much better narration! Very interesting and informative.
"Finally, be sure to have a great day."
Thank you, I will!
Excellent video! The metryiorhynchids are some of the coolest croc kin around!
Made my evening - thanks a lot!
Feels like an honor commenting this early.
Very exciting and insightful video indeed!
Convergent evolution is awesome
I loved this video Essay! 👏🏼
That was a very interesting video. Thanks!
Great video as always. Dakosaurus is a brute and i am glad to hear about it.
Finally a video on my favourite dakosaurus, really deserve more attentions and same goes with every other marine "crocodiles"
Nice video. Subscribed
Great video!👍
Another great video 😎
Thanks for the info!
Super dope, thanks for sharing boss
You're always educating us as always, thank u, the narrations, the research, the informations, the Images that are shown are verygood, I'm not regretting by hitting the subscribe button and notif. Since, And hit the Like button also to give love. You deserved a big thumbs up by the way Sir. 👍❤
Thanks for the video 📺. Watching it in Brazil 🇧🇷 innerland.
It is very nice to know that oceanic crocodilemorphs were roughly 2 Vladimir Lenins long. I also haven’t seen anyone else comment about the interesting choice of size comparison
One of my favorite Mesozoic genera! Thanks for this one 🙂
135👍... And more to come...
There must be more people liking these videos, because they are really good, and they deserve every like possible.
I'm grateful for the upload, I learned a lot and enjoyed every bit of it!
Greetings bibia.
Great video! Though I much prefer your own narration. Your voice feels more down to earth and has personality, where this feels more like a typical documentary and reading a script. Just giving feedback! I prefer the casual feel but I support your experimentation because I love this channel and its informational content! Keep up the good work my friend.
well done!
Thank you!
Awesome ❤😊
Interesting video
Way interesting! The more I watch these, the less "educated" I become. Being that I am completely clueless as to the paleontological species and timelines! Ha ha ha 🤣😂😆 I absolutely love learning ❤ about these! Keep up the great work 👍 👏
Ah yeah! The Proto-Mosasaurus.!
His voice is new
various guest narrators, always credited in the desc
@@tanagerbirds I see
It's the Bone Shark from the game Subnautica! :)
Maybe that’s the inspiration for the bone shark
@@KaijuFan1954 my thoughts
we know from the concept art that lot of their creatures took inspiration from prehistoric creatures and theoretical ways they could have evolved, so you are probably right!
I've pretty much never seen an animal going marine be so deep into the process that their front legs look like nubbins, it reminds me of gar fish fins.
when in your next video going to be out, I mean I know you take time with these videos but there are just so many cool prehistoric creatures to talk about.
The next video may be out by Wednesday. Sorry it is taking so long.
@@chimerasuchus its ok.
Wow talk about being early
Interesting that Lenin holding a cat is being used as the size comparison for some of those images
I really like your voice 😊
So the thalttosuchians were like alright we’re going to the water and became fully aquatic
3:04 im glad you cleared up that it was nicknamed after godzilla the reptillian movie monster as opposed to uh.... idk the nissan GTR?
Smooth crocs, do you think that'd feel like a snake then?
My favorite croc
cool
Crocodilians have to be one of the most versatile species on the planet, it's no wonder they are still going strong today.
Imagine how crazy it would be if a group of Paleontologists were to find the fossil remains of a winged crocodilian that could've either glided or maybe even flied?
I love the Dank-o-saurus.
Dakosaurus literally means godzilla lizard meaning it's the coolest creature of its time and I love this video
Hope you're having a great day
Dakosaurus actually means "biter lizard". "Godzilla" is just a nickname given to Dakosaurus andiniensis.
I hope you have a great day as well!
Dako literally means biter in Greek.
I had always thought Dakosaurus was a mosasaur, but convergent evolution says it.
Cymbospondylus and Mosasaurus are relatives of Snakes. So Dakosaurus the Crocodile relative is the example of Convergent Evolution.
I have an idea, since your most popular video on a pacific creature was Barinasuchus why not do a video about the creatures it lived alongside. I tried to look up creatures found in the same formations but all I could find was a small species of notoungulate called Miocochilius.
No discussion of the possibility of live birth?
Reminds me of a pike or alligator gar
I've always wondered why, after the extinction of the Dinosaurs and marine reptiles, crocodiles and alligators didn't evolve (again) to deep see life. It seems like a obvious niche for them to fill over time.
Alligators lack salt glands, so their potential to become fully aquatic is low.
There was a group of marine crocodylomorphs, called dyrosaurids, who survived into the Cenozoic. Juvenile dyrosaurids grew up in freshwater environments, which may have hampered their potential to become fully marine like the metriorhynchids. Either way, they became extinct during the Eocene. Later crocodilians would find that any attempt to become fully aquatic would place them in direct competition with the now firmly entrenched cetaceans.
Can you a video about the ornithopod Lurdusaurus? It's a very fascinating creature.
It is on the to-do list.
@@chimerasuchus Great!
Makes you wonder why endothermy is such a debated topic. It's an obvious asset in so many cases. Why wouldn't successful species use it?
08:51 Yet. They haven't yet... =)
Needs more DAKKA
Your narrator is excellent, no doubt about it - but I miss the personal touch of hearing your own enthusiasm carried by you OWN voice!!
I wonder how some of these aquatic reptiles with reduced appendages managed to reproduce. Did they still have to lay eggs on land despite such limited mobility on land or were they viviporous?
Dachasaurus's skull looks like an orcas
Oops sorry said this in the beginning when I saw the skull first
I always thought this guy was a mosasaur
That there is one of them thar Alligator Gars!
I could not help but notice some of the teeth in your video resembled Spinosaurus teeth! I have a couple myself. They are abundant souvenirs of the late cretaceous. Are some of these teeth misclassified? Perhaps of of these teeth belong to a cocktailian! And mosasaurs belong yet to another group -- the squamates, related to modern lizards! Truly the ocean in those days would have been a cosmopolitan place to be eaten!
Those are just the ancestors of pike and musky
Hey! You’re not CHimerasuchus! Give him back!
Why don’t you think of a suggestion making a RUclips Videos all about Geosaurus (A Marine Crocodile and/or A Sea Crocodile) on the next weekend and/or the the next weekday coming up next?!👍👍👍👍👍⭐️⭐️⭐️⭐️⭐️
Duck-a-sawres!
💙💚✨
Why don’t you think of making a great suggestion of a RUclips Videos all about of another Marine Crocodile Species called a Geosaurus on the next weekend or on the next weekday coming up next?!👍👍👍👍👍⭐️⭐️⭐️⭐️⭐️
What happened to the old narrator?
You pronounce "Dokasoras"
This is actually a sea crocodilian, not a dinosaur.
Both the title and the video make that clear.
Comment
Wanna know what really killed the dinosaurs? Meee!
Dakka saurus
Dakosaurus is so far removed from being a crocodilyform that should it still be considered one? No oceoderms. No feet. Theropod like skull.. A fluke. Heck, almost no scales.
Under cladistics, if it is descended from a crocodyliform, it is always a crocodyliform. Crocodilians themselves are very different from the first crocodylomorphs.
By your logic, humpback whales should not be classified as even-toed ungulates because they don't have hooves, teeth, or hind limbs.
You're always educating us as always, thank u, the narrations, the research, the informations, the Images that are shown are verygood, I'm not regretting by hitting the subscribe button and notif. Since, And hit the Like button also to give love. by the way You deserved a big thumbs up Sir. 👍❤