When Sea Turtles Grew to the Size of Rhinos
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- เผยแพร่เมื่อ 30 ธ.ค. 2020
- When we think of Cretaceous marine reptiles our minds usually go to giant long necked plesiosaurs or crocodile jawed mosasaurs. However sea turtles also once held the mantle of giant marine monsters as well. Sea turtles are big animals today but 70 million years ago they grew to the size of rhinos.
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Sources:
academic.oup.com/mbe/article/...
web.archive.org/web/201306061...
www.researchgate.net/publicat...
watermark.silverchair.com/bij...
www.dmr.nd.gov/ndgs/documents...
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Judging by the comments, the algorithm has finally realized these videos are interesting to stoners.
Omg underrated comment
Haha yes
Ikr lmao some memers are being reccomennmded this
I was so high, I bought the merch
Yes, yes they are
As an artist myself, I really appreciate the inclusion of the names of the artists alongside their art.
More TH-camrs need to start doing this!
Because of the way creative commons works he literally has to do this. If you see a channel using these illustrations without any form of credit it is a copyright violation :/
@@Gasmaskmax a copyright violation that likely will never be claimed because its a long process/no one notices
I like turtles
I really appreciate how this channel acknowledges the Artist behind each image it uses!
No that's the name of each animal
@@MrSaverio97 dmirty the ancient turtle
@@alecburris4225 a giant turtle from Russia
Most paleo channels do. Ben G Thomas and Henry the Paleo Guy and Trey the Explainer all do the same.
Yeah, it's great that some youtubers at least do. Unfortunately not all are this good.
Discovering this channel has been one of the few good things about 2020
That is a FACT.
uh hi almost in 2022 here but you're right this channel is very gud
Same i discovered this channel back in 2020
And it's now 2024
But i still love it
That one turtle that predicted mass extinction and was like "I told you it would happen guys ... eh, guys? Where is everyone?"
'Still silent to this day'
We're the turtles now
6:14 holy hell that really puts the massive size of this thing in perspective
It's huge. You don't really realise how big a creature is until you see it compared to a human.
Still think my favorite thing to do is get high and start watching these videos
Me too man, shits fire
**sound of bong**
Is no one else talking about how that Archelon lived through its entire life from childhood to adulthood, all while missing a flipper?!?
What a badass
It's just awesome :D
When you think about it though, what else can it really do other than try to survive
Front or back Flipper?
That baby turtle is going the wrong way.
Yeah, 6:34. Someone turn it around.
@mari That is DEFINITELY a crippling phobia for a sea turtle to have. Perhaps a prompt intervention is in order.
Forgot its floaties. Brb.
Just saying goodbye to land until it's time to have children of their own, let them take it in (as long as there are no prowling gulls, crabs, etc.)!
When The Ninja Turtles Goes Sicko Mode
indeed
WOOOOOOOOOOO! THATS WHAT IVE BEEN WAITING FOR, THATS WHAT ITS ALL ABOUT!
Ooooooooooooh
WOOOOOO!
fk yeeeeeeeeaaaah!
YEAAAAAAAHHHHH BABYYYYYYY
THIS IS THE MOTHER LOAD RIGHT HERE!!!!
What does a 4 metre turtle eat?
Anything it wants
Well anything it can chew what with lacking teeth he he.
@@Sara3346 you must not be familiar with beaks... The nearest Bird, Cephalopod or Turtle can easily correct that....
The survival of sea turtles into the modern day probably had less to do with just a low metabolism but more on their unique diets and niches for marine reptiles. Most living sea turtles are herbivores that graze on algae as adults, and the most carnivorous species, the leatherback, is a soft body specialist of jellyfish. These are all food sources with very low survival requirements and likely were affected much less than other things by the K-PG Extinction Event so unlike every other large animal on the planet sea turtles didn't see a significant drop in their preferred foods, and combined with a low metabolism they were able to ride out the mass extinction when literally every other marine reptile couldn't. That would also mean for about the first few million years of the Paleogene sea turtles were among the largest animals on the planet. Dwell on that.
As a counter point for this argument we know that both marine algae and at least one ancient clade of gelatinous organisms were hit very hard by the K-Pg extinction as such ecosystems are extremely dependent on primary photosynthesis.
In the case of Comb jellies despite a fossil record going back to the Early Cambrian molecular clocks show modern Comb jellies all shared a common ancestor 66 million years ago and despite the poor fossil record as a whole for such gelatinous creatures fossils show that prior to the K-Pg extinction comb jellies had a far larger diversity of forms. The last common ancestor of modern comb jellies was most likely Cydippid like and was probably a self fertile hermaphrodite. Similarly phytoplankton were devastated in fat from what I have read it seems like as a general rule only benthic and abyssal marine species were able to come out on the other side fairly intact. With exception to geothermal systems there seems to have been a complete and total collapse of primary production the phytoplankton that made it to the other side probably relied on either dormancy or heterotrophy to do so. In fact the plants that survived were mostly low light adapted understory plants angiosperms and ferns were adapted to the understory and thus fared far better while gymnosperms were nearly wiped out with surviving species going from widespread to cosmopolitan distributions to localized. In fact if it weren't for Ferns which can photosynthesize at much lower levels of light than most photosynthesizers there might not have been any mammals as from the fossil aftermath they seem to have been the only plants that could produce energy at the low light levels in the aftermath of the extinction. It truly seems to have been that bleak.
Whether on land or in the sea anything completely dependent on the sun directly or indirectly went extinct except for lineages which have the ability to go dormant for long periods of time, lived off detrital ecosystems (i.e. ecologies based around consuming dead stuff) cache lots of food and or had slow metabolic rates. The lack of sunlight for several years seems to have been the main culprit for the K-Pg extinction and jellies and algae are not organisms that would fare well hence that can't be the reason sea turtles made it while other marine reptiles or fish with similar niches didn't.
man just been bingeing your channel and i wish i had a video per day forever. the voice, the images, the subtle sounds, the background music, the length of video time but also the depth of information covered AND its interconnectivity. its just all so good
Just finished the whole video & I can’t fathom a sea turtle being that huge. Like...what would they eat? That would be insane
They would eat more of the same, I guess...
well they still had a slow metabolism, so they couldn't hunt anything even remotely close to their weight class, so they most likely grazed on lots of plants and jelly fish, basically things that they didn't have to chase since they didn't have the energy available for actual hunting.
Leatherback sea turtles today are a lot bigger than I thought. Some of them look huge.
if the turtles were bigger then you would assume what they ate was also bigger
Archelon's beak in particular was robust enough that it could've eaten hard shelled crustaceans and maybe even ammonites
Thanks for uploading today, living in my own at the other side of the planet away from my family as been rough specially today. Your videos made me forget how lonely it gets. It makes me remember at times my rather embarrassing obsession with dinosaur and antiques creatures that I used to have (thanks jurassic park haha). anyways love from Germany!
I wish I could give that giant turtle a hug. I love turtles! They’re so cute 🥰
Thanks for sharing.
“Being slow and steady really does win the race” Gottem 😎
you actually have a pic with the western interior seaway, i have spent ages on google for a tiny one.
Please do a video on pandas! It would be fascinating to learn here about how this carnivorous animal became a herbivore and carried on living while the cave bear (which was also herbivorous) became extinct.
6:14 i thought of a big turtle, but this is big big :o
I predict yall are gonna hit 250k by the end of 2021. Even though I hope its much more
I predict he will reach 200k by the end of this sentence
430 k now in 2024
Happy New Year for these turtles!! 😃🐢
"GO NINJA, GO NINJA, GO!"
You don't understand that your voice is my sleeping pills. All i dream is of dinosaurs now.
Have you considered doing videos of a specific place and time? Instead of focusing on one species, maybe do something like "north africa in the late cretaceous." I've been thinking it would be cool to learn about ancient ecosystems/what prehistoric animals lived together
These Moth Light Media videos are just fantastic!
Brilliant quality 👍
I find it fascinating that turtles were this big
Can you make a video about seed evolution? I am curious, but can't seem to find any videos about it.
I love Moth Light Media!!
Good job on this video, been here since 10k
thank you moth light media
My New Year's Eve has been blessed by a new video. Thank you for your awesome videos.
I adore your videos. Thanks for what you do.
Would it be possible to show a map of the earth at the time to show where these animals were found? Saying modern landmasses like the UK, it doesn't really mean much when we are talking about this long ago.
Mentioning that protostega fossils we're found in UK, Brazil, and AUS was only to clarify that the family had a worldwide presence, so there's literally no need for a map there, you can just go look at a map of the whole earth. But then he literally gave you a map that transitioned form modern landmasses to the Cretaceous period, where he talked about western interior seaway as having had the largest sea turtle fossils on record... like, he literally gave you exactly what you were asking for...
@@Colesalad my point still stands.
If artist like Mario Lanzas can include full maps with fossil locations during that time period. I think it’s reasonable that this channel can do it.
stellar work man
love your videos
keep up the great work
You are a true hero for making these excellent videos
Great video my friend. This old animal is very big for present days
You guys are the best, thanks for all the amazing content
Happy new year Moth Light :)
Happy New Year dude
Turns out turtles evolution is more complicated than expected. Can't wait for future breakthroughs!
At 5:45 a size comparison is shown between sharks, it is probably better to align both animals at the start of the ruler and not the smaller one at 0 and the bigger one at the end.
when i watch your videos i always wish i could go back in time and see the animal s/ eviroment alive , great channel
Looks like a few people accidentally hit the dislike button instead of the like button. :(
I don't want to meet the monster that would intentional hit the dislike button on this video.
I love your videos so much! Another great one!!
i love c turtles they are so nice big and slow and peaceful creatures
Thanks!! Love your content
Loved this video, thanks!
Happy newyear :)
Love every single video u do
Your work is great, thanks from France.
Wooooah 5:51 Xiphhactinus that's a new one for me! Huge fan of your channel man I hope you blow up to the millions of subs you deserve in 2021
What a great knowledge to start the new year 😊
Great stuff, keep it up man👍
Happy new year !!
this is a veerrryy good video
Great video
7:46 GET OUT OF MY HEAD GET OUT OF MY HEAD GET OUT OF MY HEAD GET OUT OF MY HEAD GET OUT OF MY HEAD GET OUT OF MY HEAD GET OUT OF MY HEAD GET OUT OF MY HEAD GET OUT OF MY HEAD GET OUT
Turtles are such venerable creatures-like rhinos, manatees, beavers and elephants. More than most vertebrates, they simply want to be left alone.
Incredible!
Wow Mothlight ist growing
YES YOURE BACK FINALLY
This was a fun one
This is so cool
Your videos are just amazing! One of those people have to watch something you fall a sleeping. Of course never retain everything on the first watch.
Enjoyed, thanks!
Nice
Not only is he better than PBS eons his siting for sources is on point! The description is informative and a bit tantalizing, so lovely (:
If there isn't a giant turtle species named after Great A'tuin, there really ought to be.
Happy New Year 🎊
Awesome.
Commenting to help the algorithm of this amazing channel!!
These videos are well thought of, I’d also like to known what’s the music in the videos
Your content is high quality.
#TEAM LEONARDO 🐢⚔
That was mega interesting,slow matabolisms ,didn't know that,thanks,and hope it's a great new year for you,thanks
You are awesome 👏
Love from India।। really appreciatable।।।।
Happy New Year
Moth light Media 🎆🎇✳️✴️⭐🌟
I agreed about sea.Turtle evolution Mesozoic: 230-66( but some are alive turn into) Cenozoic 30-40-present
aaaawww new video for new year i needed that, thank you ;w;
happy new year y'all :D
What hasn't grown into giants? Like what's next? Mice?!
In terms of animals:
Colembola so far as we are aware have always been small. This is true for most of the animals with predominantly cutaneous respiration, such as tarigrades, and palpigrades.
Ants are pretty small, they weren’t around when there were really high Oxygen levels. There are a few modern examples of big ants, but these are still not huge animals. This goes for most modern groups of insects, it is possible that many of the largest members of these groups to have ever existed exist today.
Capybara: "have you heard of me?"
@@OriginalGlorfindel theyre more like guinea pigs than mice
@@OriginalGlorfindel well yes if you change mice to rodents, i was thinking something around a mouse.
Metabolism is usually the limitation here, so animals like mice that have extremely high metabolism quickly reach their size limit, if in theory you could magically enlarge them to the size of a cat or dog they would immediately overheat and die.
All of that for a tortoise and the hare reference. *Applauds* :D
Fun little tidbit I happen to know: the holotype _Archelon_ (or at least the cast of it; I don't remember if they have the actual fossil on display) with the damaged rear flipper at the Yale Peabody Museum is going to be remounted and presented as being attacked by a _Tylosaurus._ Might not be the most accurate to this individual's life history, but what else are you gonna do if you have limited space and a giant mosasaur cast?
Could you please make a video of the South American Pyrotherium or Toxodont please.
Sea turtles, mate. A pair of them, lashed to my feet.
Not so easy is it?
The good old days..
Santanachelys needed distinguishible digits for those sick riffs.
mann moth light media is turtle mode lately
Thanks for another, great video. Hope you went well in your exams.
Have you considered making an occasional appearance in your videos? I ask this because, Attenborough is soon going to need replacing... 😉
that feeling when you’ll never get to swim with a giant turtle :/
So true!!!!!
7:46
That enormous shallow sea would have been an incredibly rich habitat for animals to breed.
I'd never heard of the "Ginsu Shark" that's a hilarious name !
I think i heard of the ginsu shark before the ginsu kniff, then again im german not american 😅
Slow and steady wins yet again
I like turtles
Hey from Brazil
I didn’t know that about sea turtles
the first video of 2021