When Animals Learnt to Bite, the Evolution of the Jaw Bone

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This video shows how fish learnt to bite, one of the most important developments in vertibrate evolution that allowed fish to dominate their habitats and paved the way for land vertibrates also.

Sources:

[mothlightmedia]

Ok hopefully this upload has no major mistakes, thanks everyone for letting me know.

[gustavgnoettgen]

That fish's first statement afterwards:
"HA, SUCKERS!"

[ambergris]

Something amazing about the Dunkleosteus' jaw is that its bite is not only impressively strong, its opening (contrary to crocodilians) is maybe one of the strongest ever. This means that it probably hunted using a combination of extreme sucking, and then a crushing bite. The stuff of nightmares.

[regular-joe]

I've never heard anyone else address this issue - an answer before the question was asked! This was fascinating and enormously thought-provoking, thanks so much.

[GeneralCalculus]

I don't know why "jaws are older than trees" gave me a chuckle, even though it's what's seen.

[aidanharrison]

Amazing to think that my arms, legs, lungs . and jaw are a gift from a 300m year old fish . Called Brenda Bella Psis . I wish I'd met her . Just to talk about the good old days .

[opposumness]

Me: Scrolling through YouTube, bored.
Sees this video on jawbone.

Me: ok, I'll bite.

[kadenherzog]

Anyone else spend the whole video trying to "bite" as hard as they could with their lips

[erikagibbs]

3:57 I'm not willing to admit how long it took me to realize this wasn't a squid named Daniel Carter

[jkjk]

So wierd to think that the jaw evolved from gills. I'm touching my jaw now and tripping out a little

[BertGrink]

Not only is the content on this channel deeply fascinating, but it's also incredibly well presented; I love your videos, Moth Light!

[askellabsalon]

You are the king of youtube paleomedia mate. I can't watch PBS Eons anymore cause you're so much better lol. 10x quality with x/10000 budget.

[corneliusmcmuffin]

A though that I've often had is, what if the earlier jaws were just made of cartilage or another softer material that doesn't fossilize?

[tlam]

Lmao imagine not having a jawbone

-This post was made by Post-Silurian fish gang

[rileykortemusic]

It’s so amazing to think that just by chance a couple a fish said “ Hey let’s make our gills work a little better” and now we have jaws

[YouSoRusso]

Your videos take me to an entirely different plain of thought. I get lost in this complex but yet simpler world of our past. Never stop uploading dude, I'm here for every one.

[WaterShowsProd]

It's amazing when the discovery of a species manages to flip our understanding of how things are related.

[wraith]

i recall theories of the armored fish dying out since the boney fish were able to store calcium and use it when it got scarce, along with that they also had kidneys to help regulate water in not-so-salty waters, unlike the armored fish who again had the armor to regulate water.

i forget where i read this but if anyone can then i would like to hear your take on it.

[DaveLeoBaker]

I know this is a science channel, but channels like yours are responsible for some of my music. I'm inspired by nature, and you do a great job at describing it.

[ReptilianAnusWizzard]

I imagine the first Fish with a jaw going around and biting everybody "look i am biting you, bet you cant do that"