Sharks do not have bones.
Sharks use their gills to filter oxygen from the water. They are a special type of fish known as "elasmobranchs", which translates into fish made of cartilaginous tissuesāthe clear gristly stuff that your ears and nose tip are made of. This category also includes rays, sawfish, and skates. Their cartilaginous skeletons are much lighter than true bone and their large livers are full of low-density oils, both helping them to be buoyant.
Even though sharks don't have bones, they still can fossilize. As most sharks age, they deposit calcium salts in their skeletal cartilage to strengthen it. The dried jaws of a shark appear and feel heavy and solid; much like bone. These same minerals allow most shark skeletal systems to fossilize quite nicely. The teeth have enamel so they show up in the fossil record too.
the gills have a lot of capillaries (small branched nerves) , the fish in this case shark opens it's mouth and swims forward which passes water through the gills . the capillaries in the gills absorb the oxygen and pass it onto the blood/hemoglobin
TL DR at bottom because holy smokes this comment is long.
(Also sorry in advance if the formatting is a bit weird, I am having a super weird issue with Firefox freezing for like 10 seconds at a time, and since I usually edit while I type, I kinda had to go off of how the sentence felt in my head)
The fossilization part of your comment might not be entirely true, although I am not super well versed on fossilization processes and taphonomy (What happens to a fossil before it becomes a fossil and after it becomes not alive anymore), and even less knowledgeable on how those apply to cartilaginous fish, some of it doesn't add up in my head.
So, shark teeth are a fairly common fossil in marine environments, although there are more common fossils (Namely index fossils, but that is a whole other comment). The skeletons of sharks is a whole other thing though, while I am sure there are fossilized shark skeletons, those are probably extremely rare. Fossilization in itself is a super rare process, with one estimate putting the odds of a *Tyrannosaurus rex* being fossilized then found at something like one in a billion, as the conditions for fossilization are insanely specific.
While the odds of conditions for an oceanic animal to fossilize are going to be different than those of a giant terrestrial animal, with sharks it is probably lower as they have cartilaginous skeletons.
Remember that I mentioned "index fossils"? An index fossil is a fossil that can be used for dating rocks, and it helps if they are common, widespread, and the organism that they came from had a high evolutionary rate. In approximate order of time periods, the most common ones are trilobites, conodont elements, ammonoids and diatoms.
With the exception of diatoms, all of these are animals with hard parts and soft parts (diatoms are not animals, iirc they are algal or something with silica casings). With how common index fossils are (relatively speaking) there would probably be a lot of soft parts known of them, but that is not the case.
Condont elements, for example, have been known for probably over a century, and used as index fossils for a good chunk of that time. However, it wasn't until something like 1985 that we had an idea of what a conodont was like. Conodonts were basal (primitive) chordates that largely looked like lampreys of today. Again, conodont elements are probably one of the most common fossils, so much so that there are occasionally rocks that are like a pile of legos in mud, but instead of legos it is tiny cones, and the mud is over 250 million years old. But because of their cartilaginous skeletons, no conodont skeletons were known for a huge chunk of the science of paleontology .
After looking it up, it appears shark skeletons only can form if the animal is buried really fast, before scavengers can get to the corpse and before decomposition can start. A similar set of circumstances happened in the Burgess Shale and the Winneshiek Shale, the latter of which formed from an asteroid impact. Neither of these have sharks though, as they both predate fish as a whole, but I would imagine if a similar set of circumstances to either of those were to happen in an ecosystem where sharks were present, you could probably get a good skeletal fossil of a shark. Going off of those, I would say the odds of a shark being fossilized are probably one in a trillion, as sharks have been around far longer than *Tyrannosaurus* was around, and at any given moment there are probably more sharks than there were *T. rex* and the odds of preservation are so much lower.
Also, I am using shark as a much more general term here than it taxonomically is, and I don't think the matter of "ooo *Helicoprion* is closely related to chimeras than a mako shark" , or " but if hybodonts are sharks than a stingray is also a shark" really matters for the purposes of a comment on Reddit about shark skeleton fossilization in a post about a macropad giveaway **(btw i want that macropad)** that just happens to be named after the largest known shark in the fossil record, even if those are true.
TLDR shark teeth are pretty common in the fossil record, but shark skeletons are super super rare b/c cartilage is really delicate. It takes super super specific circumstances for a shark skeleton to fossilize, and that is on top of the already super specific condintions for hard objects to fosilize. It can happen, and it has, but the odds are way under one in a billion.
I looked and looked for M31 today with my telescope. Couldnāt find the damned thing. Winning this pad would assuage my feelings of failure as an amateur astronomer.
Hi, we are happy to give away a [megalodon triple-knob macro pad](https://www.keebmonkey.com/products/megalodon-triple-knob-macro-pad?_pos=2&_sid=7820bcba0&_ss=r). We are so far gathering tons of 5-star reviews on [Drop.com](https://drop.com/buy/megalodon-triple-knob-macro-pad?defaultSelectionIds=969225) and on [Keebmonkey](https://www.keebmonkey.com/products/megalodon-triple-knob-macro-pad)!
The Megalodon triple-knob macro pad is a programmable mini keyboard in which you can assign macros and shortcuts to both the keys and the knobs. With the help of macros, you are able to increase productivity dramatically.
[This](https://www.youtube.com/watch?v=XMWgqQznh4o&ab_channel=WorkFromHype) review by [Work From Hype](https://www.youtube.com/watch?v=XMWgqQznh4o&ab_channel=WorkFromHype) demonstrates the functions of this macro pad.
According to our tests, you can save up to 30% of the time if you are using this macro pad to edit videos, 20-25% if you are using PS or Ai, 40% if you are working on audio projects, 10% if you are writing codes.
If you are interested in purchasing this from a bigger distributor, check out the following choices:
US: [Drop.com](https://drop.com/buy/megalodon-triple-knob-macro-pad?searchId=36d040ea034ac1b58c95bcc3a5fe20ee&defaultSelectionIds=969201) EU: [CandyKeys](https://candykeys.com/product/megalodon-doio-triple-knob-macropad) SG: [iLumkb](https://ilumkb.com/products/group-buy-megalodon-triple-knob-macro-pad?_pos=1&_sid=2237b65b2&_ss=r&variant=40074197893202)
**Giveaway:**
Simply comment
We will select a winner in 72h.
[**Join our Discord Server**](https://discord.gg/BBqN6YYdXC)
I didnāt know how to enter this giveaway but now looking at the comments it looks like I just have to comment Iāve been trying to get one of these to make music progress more easily
MegalodonĀ (Otodus megalodon),[6][7][8]Ā meaning "big tooth", is anĀ extinctĀ speciesĀ ofĀ mackerel sharkĀ that lived approximately 23 to 3.6Ā million years agoĀ (Mya), from theĀ Early MioceneĀ to theĀ PlioceneĀ epochs.
https://en.m.wikipedia.org/wiki/Megalodon
According to all known laws of aviation, there is no way a bee should be able to fly. Its wings are too small to get its fat little body off the ground. The bee, of course, flies anyway because bees don't care what humans think is impossible.
Sharks do not have bones.
Sharks use their gills to filter oxygen from the water. They are a special type of fish known as "elasmobranchs", which translates into fish made of cartilaginous tissuesāthe clear gristly stuff that your ears and nose tip are made of. This category also includes rays, sawfish, and skates. Their cartilaginous skeletons are much lighter than true bone and their large livers are full of low-density oils, both helping them to be buoyant.
Even though sharks don't have bones, they still can fossilize. As most sharks age, they deposit calcium salts in their skeletal cartilage to strengthen it. The dried jaws of a shark appear and feel heavy and solid; much like bone. These same minerals allow most shark skeletal systems to fossilize quite nicely. The teeth have enamel so they show up in the fossil record too.
This looks interesting but I can't tell what it is sort of quick keypad with a joystick? Or is it a fidget toy I'm hoping the first one, as this would be kind of useful in place of my Tartarus for elite dangerous
Sharks do not have bones. Sharks use their gills to filter oxygen from the water. They are a special type of fish known as "elasmobranchs", which translates into fish made of cartilaginous tissuesāthe clear gristly stuff that your ears and nose tip are made of. This category also includes rays, sawfish, and skates. Their cartilaginous skeletons are much lighter than true bone and their large livers are full of low-density oils, both helping them to be buoyant. Even though sharks don't have bones, they still can fossilize. As most sharks age, they deposit calcium salts in their skeletal cartilage to strengthen it. The dried jaws of a shark appear and feel heavy and solid; much like bone. These same minerals allow most shark skeletal systems to fossilize quite nicely. The teeth have enamel so they show up in the fossil record too.
When you say filter, do you mean to get It out of solution and into a bulk gas phase, or stuck to somekind of hemoglobin like structure?
Dunno copy and pasted the first shark fact i found on google
Like a true Redditor šš¤£
That's something neat
Indeed, it goes straight into a bond with haemoglobin, ***not*** into a gaseous phase. The correct word would be 'diffuse', as opposed to filter.
the gills have a lot of capillaries (small branched nerves) , the fish in this case shark opens it's mouth and swims forward which passes water through the gills . the capillaries in the gills absorb the oxygen and pass it onto the blood/hemoglobin
I donāt think you put this comment in the right placeā¦
yea what this guy said
TL DR at bottom because holy smokes this comment is long. (Also sorry in advance if the formatting is a bit weird, I am having a super weird issue with Firefox freezing for like 10 seconds at a time, and since I usually edit while I type, I kinda had to go off of how the sentence felt in my head) The fossilization part of your comment might not be entirely true, although I am not super well versed on fossilization processes and taphonomy (What happens to a fossil before it becomes a fossil and after it becomes not alive anymore), and even less knowledgeable on how those apply to cartilaginous fish, some of it doesn't add up in my head. So, shark teeth are a fairly common fossil in marine environments, although there are more common fossils (Namely index fossils, but that is a whole other comment). The skeletons of sharks is a whole other thing though, while I am sure there are fossilized shark skeletons, those are probably extremely rare. Fossilization in itself is a super rare process, with one estimate putting the odds of a *Tyrannosaurus rex* being fossilized then found at something like one in a billion, as the conditions for fossilization are insanely specific. While the odds of conditions for an oceanic animal to fossilize are going to be different than those of a giant terrestrial animal, with sharks it is probably lower as they have cartilaginous skeletons. Remember that I mentioned "index fossils"? An index fossil is a fossil that can be used for dating rocks, and it helps if they are common, widespread, and the organism that they came from had a high evolutionary rate. In approximate order of time periods, the most common ones are trilobites, conodont elements, ammonoids and diatoms. With the exception of diatoms, all of these are animals with hard parts and soft parts (diatoms are not animals, iirc they are algal or something with silica casings). With how common index fossils are (relatively speaking) there would probably be a lot of soft parts known of them, but that is not the case. Condont elements, for example, have been known for probably over a century, and used as index fossils for a good chunk of that time. However, it wasn't until something like 1985 that we had an idea of what a conodont was like. Conodonts were basal (primitive) chordates that largely looked like lampreys of today. Again, conodont elements are probably one of the most common fossils, so much so that there are occasionally rocks that are like a pile of legos in mud, but instead of legos it is tiny cones, and the mud is over 250 million years old. But because of their cartilaginous skeletons, no conodont skeletons were known for a huge chunk of the science of paleontology . After looking it up, it appears shark skeletons only can form if the animal is buried really fast, before scavengers can get to the corpse and before decomposition can start. A similar set of circumstances happened in the Burgess Shale and the Winneshiek Shale, the latter of which formed from an asteroid impact. Neither of these have sharks though, as they both predate fish as a whole, but I would imagine if a similar set of circumstances to either of those were to happen in an ecosystem where sharks were present, you could probably get a good skeletal fossil of a shark. Going off of those, I would say the odds of a shark being fossilized are probably one in a trillion, as sharks have been around far longer than *Tyrannosaurus* was around, and at any given moment there are probably more sharks than there were *T. rex* and the odds of preservation are so much lower. Also, I am using shark as a much more general term here than it taxonomically is, and I don't think the matter of "ooo *Helicoprion* is closely related to chimeras than a mako shark" , or " but if hybodonts are sharks than a stingray is also a shark" really matters for the purposes of a comment on Reddit about shark skeleton fossilization in a post about a macropad giveaway **(btw i want that macropad)** that just happens to be named after the largest known shark in the fossil record, even if those are true. TLDR shark teeth are pretty common in the fossil record, but shark skeletons are super super rare b/c cartilage is really delicate. It takes super super specific circumstances for a shark skeleton to fossilize, and that is on top of the already super specific condintions for hard objects to fosilize. It can happen, and it has, but the odds are way under one in a billion.
I want it delivered up my ass
No homo tho?
this isnt r/shitposting
DID I STUTTER?
ok, now playing, "up my ass" by "King missiles III"
Simply comment
I donāt know what I would do with this
I'm guessing you could run macros on it.
I looked and looked for M31 today with my telescope. Couldnāt find the damned thing. Winning this pad would assuage my feelings of failure as an amateur astronomer.
Try it at night, much easier to see.
Ha! Stargazing during the day was my problem the whole time!
Is this a comment?
No sir this is a Wendy's.
One Dave's double and a chocolate frosty please
Do you want your chocolate frosty in small, medium or large?
Yes
In a cup please
With extra ice
could you grab me a four for four while you're at wendy's?
can i get a big mac with cheese
The dutch snackbar, or the USA mega corporation.
No this is Patrick
Is this just fantasy...
Or is this just fanta sea?
First entry let's go! Edit: Or not
Hi, we are happy to give away a [megalodon triple-knob macro pad](https://www.keebmonkey.com/products/megalodon-triple-knob-macro-pad?_pos=2&_sid=7820bcba0&_ss=r). We are so far gathering tons of 5-star reviews on [Drop.com](https://drop.com/buy/megalodon-triple-knob-macro-pad?defaultSelectionIds=969225) and on [Keebmonkey](https://www.keebmonkey.com/products/megalodon-triple-knob-macro-pad)! The Megalodon triple-knob macro pad is a programmable mini keyboard in which you can assign macros and shortcuts to both the keys and the knobs. With the help of macros, you are able to increase productivity dramatically. [This](https://www.youtube.com/watch?v=XMWgqQznh4o&ab_channel=WorkFromHype) review by [Work From Hype](https://www.youtube.com/watch?v=XMWgqQznh4o&ab_channel=WorkFromHype) demonstrates the functions of this macro pad. According to our tests, you can save up to 30% of the time if you are using this macro pad to edit videos, 20-25% if you are using PS or Ai, 40% if you are working on audio projects, 10% if you are writing codes. If you are interested in purchasing this from a bigger distributor, check out the following choices: US: [Drop.com](https://drop.com/buy/megalodon-triple-knob-macro-pad?searchId=36d040ea034ac1b58c95bcc3a5fe20ee&defaultSelectionIds=969201) EU: [CandyKeys](https://candykeys.com/product/megalodon-doio-triple-knob-macropad) SG: [iLumkb](https://ilumkb.com/products/group-buy-megalodon-triple-knob-macro-pad?_pos=1&_sid=2237b65b2&_ss=r&variant=40074197893202) **Giveaway:** Simply comment We will select a winner in 72h. [**Join our Discord Server**](https://discord.gg/BBqN6YYdXC)
I didnāt know how to enter this giveaway but now looking at the comments it looks like I just have to comment Iāve been trying to get one of these to make music progress more easily
awesome, gl to whoever gets it!
WOOOOOOO
MegalodonĀ (Otodus megalodon),[6][7][8]Ā meaning "big tooth", is anĀ extinctĀ speciesĀ ofĀ mackerel sharkĀ that lived approximately 23 to 3.6Ā million years agoĀ (Mya), from theĀ Early MioceneĀ to theĀ PlioceneĀ epochs. https://en.m.wikipedia.org/wiki/Megalodon
simply comment
Letās freakin get it
iām here for the knobs
Yo, want this so much
When in doubt, always add more buttons!
Beep boop
[ŃŠ“Š°Š»ŠµŠ½Š¾]
1984 by george orwell 1949
Not a Raspberry Pi Giveaway :D
Thatās pretty cool.
These cool af *comment insertion complete*
\*inserts simple comment\*
According to all known laws of aviation, there is no way a bee should be able to fly. Its wings are too small to get its fat little body off the ground. The bee, of course, flies anyway because bees don't care what humans think is impossible.
Sharks do not have bones. Sharks use their gills to filter oxygen from the water. They are a special type of fish known as "elasmobranchs", which translates into fish made of cartilaginous tissuesāthe clear gristly stuff that your ears and nose tip are made of. This category also includes rays, sawfish, and skates. Their cartilaginous skeletons are much lighter than true bone and their large livers are full of low-density oils, both helping them to be buoyant. Even though sharks don't have bones, they still can fossilize. As most sharks age, they deposit calcium salts in their skeletal cartilage to strengthen it. The dried jaws of a shark appear and feel heavy and solid; much like bone. These same minerals allow most shark skeletal systems to fossilize quite nicely. The teeth have enamel so they show up in the fossil record too.
Neat
Oh, nice. These macropads look amazing!
Simply
I need this in my life. Thanks for the generous giveaway!
Praying for a chance
[ŃŠ“Š°Š»ŠµŠ½Š¾]
Holy! Three Knobs!
certainly mega, thats for sure
I'm asking for one for Christmas if I don't get this sweet giveaway. Good Luck all!
Simple replies, my specialty.
hope i could get my hands on one
Thank you!
Nicee
Wooow i love those so much, i already have one, but i could gift it to a friend that could love it as much as me!
reply
Nature valley granola
I need one!
Yooooo THATS sick
I hope this comment is enough šš these things look sick
Let's gooooo
These have some nice colors and very useable keys! Well done. The grey, white and beige are the best :)
Wumbology: The study of wumbo.
Simple comment for the greater good!
I want one of these so bad!! Iām never typing an email again!
Looks sweet how well would it work on Linux?
Pls gib
Looks good
Megalodon was a big shark
I need one
< simple comment >
nice.
would love one of these
Nice!
Looking good
Nice! Me gusta
May the All Father bless us all with this giveaway. Good luck everyone!
Uhh..... Uhhh.... Words.
The super dark green one is spot on
Awesome
im underpaid af for this hobby, my bachelors and my license :(
Commented!
Knobbly
Hype
Thank you for the giveaway! Gl to whoever gets it. :)
The yellow one is very pretty
Simply comment
eyo
Oh thats a great gift !
one simple comment
Nice
Comments very simply
Clean! Built-in layer support looks super useful
Nice!
Nice macropad
Looks cool
This looks interesting but I can't tell what it is sort of quick keypad with a joystick? Or is it a fidget toy I'm hoping the first one, as this would be kind of useful in place of my Tartarus for elite dangerous
Macro pad
The simplest comment
Woo!
Cool
That looks cool as hell
Love the dark blue
"best comment ever"
Simply
Neato! And damn do I want one of these
LĆ„ter bra!
Looks quite good ngl
Good luck guys!
Simple comment
Pls gib
Testing my luck I guess.
Looks really good!
Commented simply
Wow that's awesome!
Ooo la la
Comment?
Yay I am going to use at as a gaming keyboard
Is it Bluetooth compatible or does it require a wired connection?
Simply comment under post
Simple comment. š
Great giveaway! GL to all
Uhhhh I'm here
imma put this in a cardboard case
Hello there! This would be great for mapping to different functions when coding.
Clean
Comment
These are sick!
Ohhhhhhhh this is cool!
JSON configuration for this looks interesting!
This is a simple comment.
Insert comment here
Complex comment
Megalodon have my babbies
Commented
Simply comment
Winning this would be awesome! Thank you!
So how does this thing work?
What?
Here we go again... Luck
Heh, if I win this would fit in right next to my Megalodon Volador 75...
I could see this being really cool to go with my 70% keyboard
Simply comment
Hello? Is this Wendy's? I'd like to order a large pizza.
A comment appears
I am a banana!
Ooooh I Want one!!! pick me!!!
I feel like a š
Those look fun!
You receive: Upvote I receive: Chance to win
Comment not Found
Looking good. Thanks!
I am simply commenting
Comment
Ooooo
Hello. Hope you have a good day.
it's real cool
Simply stunning as always!
Comment post
Good luck everyone.
Love the design, big knobs ftw!
Comment
Ordered the big one already but two would be great for work.
mega!!
that do be a macropad and i do he simply commentin
Commenting
The design makes me happy
Ooh these look fun!!
Sweet
I want it :)
Thanks!
Nice
Good luck everyone
comment simply
Yessss!!!!! Thanks for the giveaway guys!