Devonian: The Little-Known Era When Armored Prehistoric Sharks Dominated the Seas! DOCUMENTARY

🌍 The Devonian period began around 419 million years ago and spanned 60 million years. It ended around 359 million years ago. This long Devonian period is subdivided into three sub-periods: Lower Devonian, Middle Devonian and Upper Devonian.
To be even more precise, these sub-sections have themselves been subdivided into smaller periods. Thus, in the Lower Devonian, we find the Lochkovian, then the Praguian, and the Emsian, in the Middle Devonian, the Eifelian the Givétien, finally in the Upper Devonian we find the Frasnian and the Famennian.
🔥 As a reminder, videos are published on SUNDAYS at 6:00 pm.
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💥The Devonian:
- We're going to start our journey into the Devonian with a little tour of our planet from the sky. The map in front of you shows the importance of the ocean on our planet. It covers a large part of the planet. This was already the case in Silurian times, when the Panthalassa ocean covered a very large part of our planet. However, the layout of the continents and oceans was significantly different.
In the middle of the Panthalassa Ocean, we can see the continent Laurussia. This is a very young continent, formed in the Silurian.
The much larger Protogondwana continent can also be seen to the south of the hemisphere. The latter occupied most of the southern hemisphere until the earth's activities forced it to move. It is now slowly sliding northwards. And to the north lies Laurussia. The two inevitably collide.
This collision and the new proximity of the continents will result in a new configuration of our planet and its landmasses. These were the beginnings of the formation of Pangea, a single continent, which took place a little later, in the Carboniferous period. In addition to creating Pangea, this collision closed the Central Ocean and raised imposing Hercynian mountain ranges from the Appalachians to the Silesian Massif.
As far as geography and climate are concerned, there's another important point to know about the Devonian period. Here we have a view of the Earth at the very beginning of the Devonian. If you look at the continents and the Earth from all angles, you can see that there were no major ice caps. This means that the climate was rather mild all over the globe.
Average temperatures were around 25-30°C.
During the Devonian period, plate movements brought certain land masses closer to the South Pole. The absence of ice caps was therefore short-lived. As you can see, a few are appearing here and there near the poles. This phenomenon is accompanied by some major climatic changes, as you can imagine, bearing in mind that the position of the continents is still quite close to the poles compared with today. The continent is therefore cooling.
But it's not just the ice caps that have an impact on climate, plants also play a major role. As you'll be able to see for yourself in a few minutes, plants developed a great deal during the Devonian Period. Remember, the Silurian heralded the beginnings of their colonization. New plants could be seen along the coasts and coastlines. Everywhere else, life still seemed impossible.
By the Middle Devonian, plants were finally able to reach deeper inland. A variety of plant species appeared on the continent, along with significant radiation.
This expansion is a good thing for life on earth, of course. But it is not without consequences for the climate. Plants absorb large quantities of CO2, from which they draw their energy. As CO2 levels fall, the air also cools.
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🎬 Today's program:
- 00:00 - Introduction
- 05:56 - The geographic space of the Devonian and the main events of the period
- 11:45 - Devonian reefs, a rich and diverse marine ecosystem
- 25:02 - Species diversifying... others in decline...
- 32:47 - Dunkleosteus, the incredible prehistoric armored shark!
- 39:45 - One of the major radiations in Devonian history
- 43:22 - Golden age of fishes
- 01:17:28 - The expansion of vegetation on earth
This channel is an official affiliate of the ORBINEA STUDIO network.

[@YULIA3441]

One fish decided to leave the water and now we have to go to work 🤔

[@brianswelding]

🤣🤣🤣

[@cher8005]

😂🙃😉

[@DrTubeman]

That's damn fish for yah...slippery buggars...

[@jabonjabon8670]

i f hate that fish

[@youknowlesthisman1928]

Figures…

[@kuligfamily7514]

Who added the Forrest Gump twang to the voice? "Here we are in the Devonianaaaa. Maamaa always told me to not go swimmingaa in the Oooceana".

[@silkkdread]

I was thinking the same thing😂😂😂 these Ai voices are craaaazy😂

[@grumpygremlin2379]

😅😅😅

[@user-jt1bi6id6n]

Stopped watching because it was too much

[@silkkdread]

@@user-jt1bi6id6n me too it was getting to cringey 😬 👎🏾

[@zombiejesusb]

It's annoying really

[@morningstar577]

Armored sharks with a fricken laser beam attached to their head

[@peterl708]

Imagine going back to prehistoric time and feasting on those giants crustaceans … wow, seafoods paradise 🤤

[@wannabetall2000]

Why does the loud background music seem to be a problem across youtube?

[@Wavy_Gravy]

Bot channels.

[@wannabetall2000]

​@@Wavy_Gravy Is that why the speech pattern is so odd?

[@PrincipalSkinner3190]

​@@wannabetall2000Yes this is an AI voice and a bot channel.

[@cher8005]

Seriously. Between this annoying trend and hyper-time, where the video jumps around between different time periods in combination with the horrible vocal fry in the narrator's voice it's becoming almost impossible to watch contemporary videos - and this channel in particular.

[@Batsxwitches]

Honestly I’m just tryna learn about armored Dino sharks not listen to an entire string symphony lol

[@ArtMysteries135]

Your videos are always so engaging and fun to watch.

[@marvinb.7360]

Is that thumbnail AI generated? Aint no dunkleosteus i ever seen before

[@ShahPhilLeotardo]

I was about 5 during The Devonian Period, I used to catch them fish for dinner everyday with my bare hands. True Story.

[@Wardads1]

Bare hands ? Pull the other one mate!

[@ChameleonMD123]

No more fiction than dinosaurs and this video.

[@petrovtiganu9904]

Then you had to walk 15 miles to school.

[@ShahPhilLeotardo]

@@petrovtiganu9904 No I ran barefoot because shoes hadn’t been invented.

[@kathrynjaneway5346]

Guess your personal history proves the "religious creation of humans" to be a lie? Imagine that hahahah

[@Bloomcycle]

If I was an insect I'd be a huge spider 🕷️🕸️

[@thejannerofplymouth3654]

Watching from Plymouth DEVON uk

[@jpd4627]

The music isn't as annoying as the AI voice

[@aaronmoore7280]

so dont watch it

[@jpd4627]

@@aaronmoore7280 I didn't

[@lilshoota19]

I wish I could watch this bro but they way this dude is talking is fuckin killing me bro why does he say the ends of each word so hard like got damn bro

[@johnshields6852]

What is that word pronunciation that sounds weird, is that computer generated. Can't listen anymore,

[@johntorrington2672]

Don't be racist against AI bro.

[@robmeyer8342]

is there a playlist that include the other videos in order??? I love watching these types of documentaries ^_^

[@LadyCatFelineTheSeventh]

Love these long videos - lots to see and learn.

[@wondody]

Thanks 👍

[@mikelisejordanjaden]

Very well done. thank you.

[@garygone5234]

The narration drove me slightly nuts. AI I'm assuming. 😜

[@marywittig1505]

The articulation Annunciation In Cadence are all messed up drives me nuts too I thought I was the only one LOL

[@silkkdread]

Definitely Ai. Almost blows the video 🤦🏽‍♂️🤣

[@SkipperByers]

Can do without the music and someone else's voice 😊

[@brianswelding]

Goodnight 😴 have a great week everyone ❤🙏

[@wondody]

Thanks 👍

[@setheosan6375]

Would it be possible to also show which kind of music you used in the video? I actually enjoyed them a lot.

[@mousewithagun3068]

Great video the voice tho

[@giulianoforti542]

Whole video is ai generated

[@bobbyliink9252]

Is this an a.i generated script ? Just curios

[@giulianoforti542]

The whole video is ai generated, from the title to the "nature" visuals

[@davidgooden219]

Good stuff.

[@Patrick140469]

What is that guys problem with pronouncing the end of a word ?????? -----52:43 1300 miles deep ????????????

[@kathrynjaneway5346]

I suspect he is an AI voice

[@Patrick140469]

Yes, you could be right.....btw@@kathrynjaneway5346

[@chadakoin1]

Another reason the ability to breathe on land or in low oxygen conditions would have been advantageous would have been the enhanced ability to escape predation.

[@thomasvarley380]

Satisfying . Just hope our scientists and historians aren't making bits up as they go along , or missing things we should really know .

[@user-io6pj8bz8h]

You want to recheck those coelacanth habitat depths! 150 meters to 1300 miles deep!

[@JB-bm1to]

I have a concussion and I read this as "you want to redneck those..." at least 4 times. I was so confused, I almost googled to see if there was a different use of the word😂.

[@user-io6pj8bz8h]

@@JB-bm1to hahahahaha, thanks you just gave me a huge laugh during a rough day!

[@JB-bm1to]

@@user-io6pj8bz8h well hey I hope your day gets better!!

[@KamieraXO]

Me waiting for him to get to the part about big scary armored shark but instead I’m learning about ecosystems and reefs

[@Uracantaino]

Interesting but background music is way too loud and distracting.

[@samuelmoore6340]

Someday, i'm going to watch this while tripping.

[@jameskps]

How do you not know when to pronounce an infliction? So frustrating because the research is good

[@johncapurso9313]

It appears the narrator/AI has a problem with the letters A and N. Too bad, irritating.

[@johntorrington2672]

I always thought my speech was odd, now I realize i have the voice of a narrator.

[@daviddaves1544]

That is rich

[@pitbullsensei179]

I'm now 50+minutes into the video and still waiting for the sharks.did i miss them when i fell into sleep for a couple minutes,will they show up in the last 10-15 minutes of this almost 2 hour long video,or is it just click bait? I hate click bate even more then i love sharks.lets hope i'm awake when/If they start to appearin the video😑

[@maeve4686]

So interesting. Great intro to life on our world. The Burgess Shelf best of.. However, before I read others with the same thoughts, the narrator sounds like Forrest Guu-uummp...

[@andrewbacon4001]

I would love to watch, but I can not do the ai voice

[@heroicrockstar]

Great documentary, apart from forest gump doing the narration 😂

[@rollyherrera623]

👎 for the insulting Chat Gpt! Lazy content providers, learn narrationl

[@arnolddavis-cu7nh]

Were going to need a bigger boat

[@johnson6099]

Sounds like the AI was using the virtual toilet while trying to narrate. Probably got a hernia.

[@th232r6]

Love that fking high pitch sound effect…. Tards

[@dr8121]

Wow they got Perd from Parks ans Recs to narrate. Nice!

[@CyanBlackflower]

Fascinating. I love this subject, but know so little about it. However, with that said sincerely, I cannot help but reflect, with some frustration, on just how little 'We' really know, and understand about ANYTHING- relative to what there is to know. In Spite of the efforts & appearances. In reality we have made little if any progress towards answering the really BIG/OLD questions. Or the very tiny ones... I feel & say this, via an incremental, ever increasing experiential learning "curve", which over time- along with several perspectives, -generated fertile venue to, some augmented positive "apriori". This, along with an inherent lifelong fixate curiosity, & intense wonderment concerning any & everything about the Natural World at large. So "Naturally" I 'understand' (to ever greater excruciating degrees), that "More is Less" within the "bigger picture", of the perspective evolutionary process, as well as throughout our actual learning, knowledge and understanding of THINGS. Simply put- From My own perspective, each advance I make learning more about something, inevitably reveals a multiple of that value in how much MORE there is to learn about it... And, how much LESS I know comparatively. Because of this, I see "Natural" organic knowledge as a kind "relativistic constant". I mean that, irrespective of our movement, our actual position- relative to it remains ultimately "fixed". I realize the reader may struggle to understand what I'm attempting to express. Not because of short mental acumen, or because it isn't easy to explain using colloquial English, but because, -as is more and more visible these days- general perceptual, interpretive ambiguity is increasing and fracturing. Compartmentalization. "Informational Entropy" -If you will...Think about it. It's a Fact leaving obvious direct evidence EVERYWHERE we look, regardless of whether one SEES it or not. It demonstrates what I'm talking about. For these and other reasons I find comfort in regarding my ultimate & final destination as the Journey itself. One and the Same. Great Channel, I love the videos. I give sincere Appreciation & Thank You to the creators, And the Viewers, for making it happen. One and the Same.

[@melodyszadkowski5256]

Run that past me again?

[@iainbredd2168]

TL:DR

[@iainbredd2168]

@@melodyszadkowski5256😂

[@Xanderfied]

Hold up, we did what? You get my ass back to earth right now

[@ayanevsworld8565]

So...we haven't know that the coelacanth is still alive for that long....yet their numbers are low....isn't that a sign that their time is running out naturally? 🤔

[@SPIOoner]

back up the train SHARKS WERE ARMORED? i knew about duky ect. but this?

[@maikutsukino4743]

That was a lot of ian. lol

[@MrMickeyyy89]

On land no life yet seems possible... There was probably still a Starbucks though.

[@danielgrove7782]

Yeah...most of this stuff is "created"...im sure comments made are automatically used to spin off new content

[@ghostshirt1984]

You made dunkleosteus wrong in the picture, they did not have teeth like that and not that many teeth even.

[@user-ih8vd3gk5g]

Tank-fish!

[@norarivkis2513]

As opposed to the fish-tank, which took rather longer to appear. 😉

[@russellcrosby8175]

say, wow, got here with less than 100 views. Goes without saying the video will be fantastic...!

[@themighty7702]

wats with the wierd pauses

[@christophersermeno8631]

Narrator AI....biology is like a box of chocolates.....😅

[@FalconsLedge]

The AI voice has the most weird off-putting rise tother end of about half his words. So bizarre.

[@jonwashburn7999]

thought it was pronounced see la canth

[@dtsosie5836]

I've heard it pronounced like that (see) la canth

[@grahamtotte7133]

see lee oh canth

[@chessoc7799]

Yep the computer voice cannot pronounce it right and I guess no one checked the audio.

[@DrTedEsq]

The information is fine, but the text to speech computer voice is unnerving. If its an actual human, have him breath more.

[@t.j.payeur5331]

Take your AI and jam it...

[@Mythriaz]

Water tanks.

[@scurge1971]

very well done

[@wondody]

Thanks 👍

[@johnson6099]

For AI. it's technically not something they did rather just typed in some words and there ya go. The fake narrator is even worse.

[@rc1411]

I came here excited to see armored prehistoric sharks and got the most god-awful dry, boring lecture of learning about pelagic ocean zones.

[@jwconstruction9065]

They got us good w all the these fake ass crazy monster sharks

[@daviddaves1544]

Yep we've been griffed good

[@sharynhinds4727]

Where is all the sharks lost interest

[@captainobvious9892]

Interesting video but I couldn't get past the narrators voice...

[@mikhok2700]

The speach has become better

[@wondody]

Thanks 👍

[@cher8005]

This AI narrator has the worst case of a forced and affected vocal fry I've ever heard. It makes it impossible to listen to him so I'm checking out now, less than a 1/5th of the way in, because I cannot tolerate this latest obnoxious trend in "videoooo productionnnn". Just hire someone to read the damn text.

[@grahamtotte7133]

sounds like an autistic person. I've met Autistic kids with this speech pattern.

[@Snailmailtrucker]

Good Lord....atleast have a narrator that sounds Human ! *FJB too !*

[@eerieforest9188]

Yo momma so old she got a recipe for deep fried trilobites.

[@chessoc7799]

Teach it to pronounce coelacanth Please

[@ziplocktheimpostor1402]

Coelacanth: 🙄 wow AI not smarter than me is a very very great way to proof we prehistoric fish are already smarter 🤣even tho we all are extinct ....

[@dmhq-administration]

ITS PRONOUNCED Dev-in NOT Dev-on even though its spelled Devon! 🤔🙄😒

[@Hugllls1971]

Yep, an intentional loud orchestra trying to build tension when there's nothing plus the kicker, it's rises & falls are disjointed, not in sync, obviously...UGH!!

[@fredkelly6953]

I cannot handle the stressed last syllables from this fucking 'voice'.

[@JohnShields-xx1yk]

The flare pronunciation at the end of the words is irritating. Just saying.

[@loneriot]

You are not pronouncing coelacanth correctly

[@cripdyke]

the music is way too loud. It's fine to have background music, but it has to be in the background. I have mild hearing loss and the music competes WAY too much with the narration for me. If I had more than mild loss, most of this would be unintelligible. As it is, it's just super annoying, and I don't think that it's your intention that your videos be annoying.

[@paulwatson2499]

If you don't like the voice cut it down and figure out what everything is for yourself....

[@EsseQuamViderity]

lol don’t insult my AI gods!

[@TomTurbo-wh6op]

Well made documentary so far.... I have seen worse and being a geologist myself, I am pretty critical, as I have to admit. Habits never change.. 🙂 So, sorry that I have to tell you, that if you want to create a scientifically exact documentation, the guy reading the script should at least be able to read it correctly: Lepidocaris was a member of the bra-N-chiopod family, not the brachiopods... Branchiopods meaning "gill foot crustaceans" ... one missing letter, big difference... it is phonetically like "bran-kee-o-pod" So, please, get the facts right, when you want to educate...

[@Snailmailtrucker]

UnWatchable due to the Ridiculous speech pattern of this Bot !

[@Emotionallyattachedtorocks]

❤❤❤❤❤🎉🎉🎉🎉👏👏👏👏😴

[@wondody]

❤️❤️👍

[@gerrispecker1033]

Another ruined video with AI B/S

[@aaronpanietz]

I love how ai butchers pronunciation of everything! This why you didn’t catch a follow bud, try harder

[@glok1989]

I'm really sceptical about evolution as explained. It is inconceivable a fish adapted to live on land and branched into millions other life forms. Human logic is flawed.

[@bard-anilsen]

It was not a fish like those you see around now. It was a more primitive fish than lobefinned fish that lived in shallow waters for millions of years. Those fish had limbs and could crawl around both in water and on land. Eventually they evolved in to something like salamanders and from there you get a new evolution in to all the land animals. Human logic need a bit of understanding to be less flawed.

[@jayday1503]

I agree with you… The theory of evolution doesn’t make sense

[@glok1989]

@@bard-anilsen I know what the theory tells us. It is still a theory, however.

[@bard-anilsen]

@@glok1989 Gravity is also a theory. Stupid arguments only makes you an idiot. It is a theory because there is still a lot of things to discover. Every scientist knows evolution is a fact just not al the answers.

[@glok1989]

@@bard-anilsen lol.

[@confusedbadger6275]

Lasted 4 mins, can't take any more of the annoying computerised voiceover

[@Adam-ix2sn]

interesting concepts for documentaries but wanted to leave a comment stating I will not watch any of these because of the obnoxious voice and music.

[@joshuaperry4112]

This narration is as lifeless as the fossils.

[@jameskps]

Lost interest when you literally can’t pronounce Devon

[@EsseQuamViderity]

The AI voice is so annoying. There’s this weird forced thing going on on all the vowels that’s so repetitive and annoying.

[@stevesellers-wilkinson7376]

The pronunciation of many of those species were abysmal! And it was full of inaccuracies... poor - but then I imagine it was made for the American market so...

[@cieloazul3540]

I've Always been a documentary junky, but this heavy emphasis on shoving evolution theory down our throats severely disappoints....

[@giulianoforti542]

You know you're spreading misinformation. It's easy to use chat gpt to make you a channel full of longass videos filled with ads. You're what is wrong with youtube now. What a shame

[@joelspringman523]

Who would believe this baloney?!!

[@cieloazul3540]

Please label evolution theory videos as such so that I may avoid them all together...

[@xxxtenctererxxx]

Well done

[@Bob01bobBob01bob-cn9gz]

Stoo ending random words as a question.. can't watch more than 10 mins

[@rumpleforeskin1812]

I don’t think I’ve ever been this early to a video in all my life. And it’s about my favorite subject 😭

[@wondody]

Thanks 👍

[@donetoldyaso.99]

Despise A.I voice, thumbs down.

[@Insultingtruth]

Some of the creatures look like they may be in my ex mother-in-law's family tree.😂😂😂😂😂her👉🏽🧟‍♀️