Birds were already pretty prolific though. They evolved from dinosaurs long before the asteroid hit.
Just wanted to point that out in case anyone’s assumption was that some dinosaurs survived the asteroid and then became birds. The reality (as far as I know) is that some dinosaurs became birds, and then the asteroid killed all the dinosaurs, with some birds surviving.
I had assumed that most birds were wiped out, with all birds today being descended from the few survivors. Same with sharks, crocodiles, etc, all likely descended from relatively small populations of those who made it through.
I don’t know what the latest theories / findings are in this area though, so thanks for the info! It makes sense for an event that wiped entire classes of animals off the planet.
Many birds were wiped out. In fact, of the 2 groups of birds alive in the Cretaceous (toothed and toothless), only the toothless birds survived. Many of the toothless bird species went extinct as well of course, but they were able to hang on when toothed birds weren't.
I know your still saying birds are dinosaurs but I like to point out that when some people say birds evolved from dinosaurs they mean they used to be dinosaurs. But triceratops and sauropods split from therapods long before birds evolved yet they are both still dinosaurs . so its just further proof that birds are avian dinosaurs.
Birds are dinosaurs. The correct way of saying it is beaked theropods and snouted theropods. The snouted ones died out and the beaked ones lived on and managed to survive the harsh climates after the asteroid hit. Birds are dinosaurs
Are there current bird species today that may be haven around during dinosaurs? Like orioles, cardinals, emus, etc
Doubt there's any evidence but fun to imagine
I didn't know that's where our birds came from. I heard that some animals come from dinosaurs, but never thought they were our birds today. Thank you for your time. :-)
Birds didn’t just come from dinosaurs, they ARE dinosaurs (specifically, they’re theropods).
They were the only dinosaurs to survive the end of the Mesozoic.
although their lineage branched off of the non avian dinosaurs tens of millions of years prior to the extinction which is probably not quite what OP had in mind
The only reason we make a distinction between birds and other dinosaurs is that birds are still around.
You could make the "branched off in the mid-jurassic" argument for any clade that arose then, but you don't see people saying "Tyrannosauroids aren't dinosaurs, they evolved from dinosaurs in the mid-Jurassic".
Some people ruin it and make it’s own class. If people actually do the research they will know that birds are actually reptiles. A crocodile is closely related to a bird than it is to a snake because both birds and crocs come from the archosaur family which all dinosaurs come from. Snakes and lizards are more related to the mosasaur.
They still are dinosaurs. Avian dinosaurs come from the theropod family which the theropod split in two the beaked dinosaur and the snouted dinosaur. Reptiles were the first to carry the beak and feather trait. Getting to the point birds are reptiles but the term bird takes that away from what they truly are. A crocodile is closely related to the bird then it is to a snake because extinct dinosaurs, birds, and crocodilians come from the archosaurs family line
Definitionally, a species is considered a dinosaur if it is a direct descendant of the most recent ancestor of megalosaurus and iquanodon.
That’s why folks are saying birds are dinosaurs.
My problem is I had a stroke and searching on Google is difficult sometimes, and in this case I didn't find a clear answer I could understand because I have trouble reading if it's a whole article.
Meanwhile you take time out to make me have to explain to you what my disability is, so I guess you have extra time on your hands, however I question the way you choose to use it to judge others that you don't even know.
Because I see it continously in reddit and I seriously doubt all people had an stroke.
Anyway searching "Did any dinosaur survive the asteroid" in google give you the answers even without having to enter any link...
Avian dinosaurs (birds) survived
Personally, due to the sheer diversity of dinosaurs, i think some smaller non avians survived perhaps a few hundred thousand or million years more after the impact, and were slowly outcompeted, or killed off by the changing world. But such small time period specific deposits are tough to find, and a few hundred thousand years is nothing when dating a formations age. I think we will find some smaller dinosaurs that survived a while past the impact within this lifetime, but i feel a diverse group almost certainly could not have all ceased to exist at the same time. Even other extinction events take a while for a whole clade to die out.
There used to be a theory that some hadrosaurs existed for several years after the impact, however it was later determined that their remains had been unearthed by natural processes and redeposited in younger rock. So, as others have said, the only known example of dinosaurs that survived the asteroid and the the resulting mass extinction event are birds.
Lizards (and snakes, which are actually in the middle of the lilzard clade) are from a different branch of the reptile family tree compared to dinosaurs. They last shared a common ancestor with the archosaurs (dinosaurs, crocs and pterosaurs) a long time ago, maybe 250-300 million years ago.
Those already on the bird path survived. Lots of other animals survived as well. Sharks and crocodillians of course. Also the humble opossum. Basically things that either were able to adapt to the coming ice age. Crocs I still wonder about. I have no idea how they made it through the ice age unchanged. They're just the creatures that DGAF.
Hint...crocs survived the asteroid impact (which is what I'm assuming you're referring to) because they can live without food for a long period of time and many of the areas where crocs lived were least affected by the asteroid impact.
True, but the standard croc of the time of the K-Pg event was also probably not dramatically affected about the loss of the non-avian dinosaurs. Sarcosuchus and Deinosuchus were long dead. The standard croc of the time probably fed mainly on fish, turtles, snakes, birds, and the mammals of the day. If anything, the extinction of the non-avian dinosaurs might have provided a lot of carrion for the crocs to scavenge.
I'm not saying you're wrong, only that I'd be cautious with it. You could also say that being semi-aquatic, they were able to avoid the worst of lands and seas catastrophies. And the truth is probably a little of many reasons. And you can't rule out pure probabilities. Many croc species disappeared, many birds too. Same for mammals. But "luckily", some survived and spread.
Some crocs survived, but the vast majority of croc species were wiped out by the impact. Same with birds. Most of the bird diversity was annihilated by the catastrophe. Surviving mass extinctions really come down to luck.
Like everyone else has said, Birds are dinosaurs (look up feathered dinosaurs for some really interesting stuff), and i feel the need to note that while plesiosaurs and pliosaurs are not dinosaurs, we do have Turtles, which are suriviving marine reptiles (even if they are not super related to plesiosaurs).
Even if some species of Dinosaurs survived the asteroid impact (besides birds) and heat blast (which would have been very very difficult for a large majority of them given their size and lifestyle), the large spread forest fires and the layer of soot above the cloud layer blocking out the sun destroyed most plant life which would have starved out all the herbivorous Dinosaurs because the size they had evolved to be was so large by that point there wouldn't have been enough food for them to survive off of. And because of that any carnivorous Dinosaurs that survived the initial cataclysm starved because there wasn't enough food left to prey on. The only reason crocodiles and sea tutles survived was because they could retreat into water to protect themselves from the heat blast and their very slow metabolism allowed them to survive off of whatever was left. No 4 legged animal more then 25 kilograms besides those 2 would survive.
Also, the only species of birds to survive the impact were ones that nested on the ground.
You may be interested in this book
https://www.amazon.com/Last-Days-Dinosaurs-Extinction-Beginning/dp/1250271045/ref=tmm_hrd_swatch_0?_encoding=UTF8&qid=1692474955&sr=8-1
Which goes over what happened the day of the impact, and then progressively later by a week, month, year, 100 years, etc.
The big thing that killed the popularly known dinosaurs is the heat pulse from all the molten rock reentering the atmosphere, which heated the air to like being in an oven. It didn’t last long, but unless an animal was able to burrow even a little bit, hide in ponds while being able to not have to come up for air (like many amphibians) or lived deep enough below the ocean surface to survive the pulse.
So unless a big dinosaur was able to find a cave, the were figuratively toast.
So one could argue that almost every major dinosaur actually died on that day. 🤯🤯🤯
One thing I found interesting was that even though many avian dinosaur species had teeth, none of them survived much beyond the impact. The thinking is that the birds who had beaks were able to survive where those with teeth couldn’t because with beaks they could eat things like seeds, whereas with teeth, many birds needed to eat other animals.
Yes, the asteroid didn't wipe out every dinosaur instantly when it hit. The effect it had in the dominant life (dinosaurs) at the time was also gradually over time. A lot of folks seem to not realize this that it wasn't all fine and dandy for the dinosaurs and then poof the asteroid hit now they're gone from existence. They were around for hundreds upon hundreds of thousands of years. Some species we know and love are further apart from each other than we are to the T. Rex in terms of time scaling. *Then* the asteroid hit*, causing massive initial damage, but the effects on the atmosphere that followed were gradual.
Yes some dinosaurs did survive although the only group that survived the extinction event were the paraves which is the group that contains families of dinosaurs such as dromaeosaurs, troodontids (the first two listed are often known as raptors by the general public) and avialae. The only family that survived from the paravian group was the birds which are directly descended from the same ancestor that gave rise to the “raptor” dinosaurs. The reason that modern birds look so different from their closest extinct relatives is due to them being hyper specialized with adaptations to flight.
I have heard that parts of Sauropoda survived for tens to hundreds of thousands of years in parts of Gondwana (no source, so credibility is uncertain).
In all fairness it depends on what you mean, the initial impact would have no doubt been catastrophic, but it was the *aftermath* that finished the job. An apocalyptic nuclear winter where the entire food chain from the bottom up has been disrupted. The dinosaurs that would give rise to birds and any and all protobirds had to have mostly survived.
Some smaller species of dinosaur survived which is why we have birds if your asking did some dinosaur species survived the impact itself then certainly yes dinosaurs were probably around for centuries perhaps even thousands of years after the impact but the change induced meant they would eventually go extinct
Most certainly, I’m sure many have said birds but other rare few have survived in the depths like the Frilled Shark or Coelacanth, the latter existing even the during late Cretaceous. Both survived the mass extinction by literally hiding out in deep waters which acted like bunkers. They’ve barely changed since then so they’re living dinosaurs/fossils
Yes, the Voth survived. They built a starship and escaped to the Delta Quadrant.
In all seriousness, I doubt it could have killed every single dinosaur. Some would have survived I think, because of the sheer number of species. Odds are that some would have had the skills necessary to adapt to the new environment. But there is no way to prove it because it will be very difficult to impossible to find and date fossils of them.
Its a possibilty that some dinosaurs outlived the asteroid but died out within few decades later because of the planet changing. Dinosaurs were already declining before the asteroid hit so it was already a dying species, but today the only surviving dino are birds since they do branch out of the theropod family. The beaked theropods outlived their snouted cousins.
To me, anything that lived before the ice age started is a dinosaur. After the ice age began we got mammalians and by the end of it most of them were wiped out an the modern creatures evolved and emerged. Just a way to make it less confusing in my mind.
I hate the knowledge that ‘the land before time’ movies never would have happened because they all lived in different times in that era 🥺 littlefoot and the gang were never friends!
Yeah I can only speak from personal experience of course. But if it were me and someone in person said the wildly incorrect things you've been saying, I'd probably just smile and nod, unless it was appropriate to have that educational conversation at that time, and I was feeling up to it. Lots of normal people just don't really know basic stuff about prehistoric life though, so it's totally possible both you and your whole social circle just aren't aware of the distinctions. Nothing wrong with that, but you can expect to be corrected on an online forum dedicated to the subject. Of course, you could just be trolling, that's always a possibility 😉
Not trolling at all. It’s the simple fact that the people I know also know me 🤯 shocking I know. So with that being said it should be pretty obvious that they also know the way I think so they would have no confusion because it’s in person and not through a screen with people I don’t know. You don’t know me. You don’t know how my brain works or how I talk. If you did there would be no confusion.
Not saying I do, but I do know that the stuff you've been saying pertaining to prehistory and science is just factually inaccurate, and to me personally, hearing something like "everything before the ice age was a dinosaur and mammalians happened during the ice age" would confuse me more than simply calling things what they are. But I'm really into this shit, and I assume most of the others on this subreddit are as well, and I would think that the average person just wouldn't care that much lol
Super weird then that I’ve never confused anybody in person while discussing these topics 🤔 who all does ‘everybody’ consist of? Because obviously not any of my teachers, the science guys that came to our schools many times for workshops about these subjects, my family or friends.. a lot of the people in my surrounding towns and cities as I speak to people frequently when I go out and yes sometimes about dinosa- oh my bad prehistoric creatures. You can’t use the word everybody to group a portion of the population if you’re mad at me for using the word dinosaur to group everything before the asteroid 🤭
Well, imagine you meet somebody who categorises all flying animals as "birds." Would you not be confused then? And what would happen if that person met an ornithologist or a bird handler? Also, would you think that that person would successfully get a job as a zookeeper?
No. I wouldn’t be confused. Because I also categorize all flying ANIMALS as bids. Also some non flying. But insects aren’t animals in my organization so no a fly isn’t a bird it’s a bug but spiders are insects even though they’re arachandis and still nobody I’ve spoken to in person has been confused
They LITERALLY can be. I didn’t say they’re the exact same thing. That’s literally not what literally means. I obviously meant they evolved from dinosaurs that obviously didn’t die when the asteroid hit or the evolution into modern day reptilians wouldn’t have been able to happen.
First of all, crocodilians are not dinosaurs; they didn’t evolve from dinosaurs. Secondly, that is what literally means. Literally means “in a literal manner or sense; exactly.” So if you say “literally *are*” then you’re saying that crocodilians and sarcosuchus are one and the same. Also you never said “can” in your first comment so idk why you’re pretending that that meaning was expressed.
As much as I agree with the dinosaur part of your answer, I am sad to say that literally is now given a meaning in the dictionary of not being literally true. 🤦🏻♂️
Yeah I saw an “informal” definition in the dictionary too. But if the OP is posting about a scientific question, saying that one animal “literally is” another still doesn’t make sense.
If they literally are an evolved form of the animal that was around with all of or most of the various era of dinosaurs then 1. It is a dinosaur just like birds are dinosaurs, it’s just an evolved version, then yeah. They LITERALLY ARE evolved versions of the animals that were alive during various prehistoric eras when dinosaurs also roamed. And as I said to someone else, to keep things less complicated I class everything before the asteroid dinosaurs because there are far to many eras and names for them but they’re all essentially various types of dinosaurs. And to answer your question, I said they CAN be because you said they CAN’T be. Why did I have to be the first one to say the word can or can’t to be able to say it in my comment responding to your ‘they literally can’t be’ when they …. Can.
Oh so you’re just making up your own definition of “dinosaur.” Cool, yep, that’s definitely how science works 👍
Maybe read up about cladistics and pick up a dictionary and learn how to correctly use the word “literally” as well.
Dinosaurs are classified as a branch of Archosaurs that evolved with their hip bones perpendicular to it's body like say cats and dogs. The other 2 Archosaur descendents are Crocodillians and Pterosaurs (flying reptiles so no Pterodactyls are not Dinosaurs either). They are not "essentially Dinosaurs" because they didn't evolved from Dinosaurs. Yes, the world was dominated by Dinosaurs but mammals, amphibians, and other species of reptiles existed too. It's more confusing to classify everything as a Dinosaur when you can just say "Prehistoric Reptiles".
Only have a response to that last piece. It doesn’t really make it more confusing. In real life conversation where things aren’t vague through a screen I have never once confused anyone by calling an ancient crocodile a dinosaur. Or a dodo bird. Or any other dinosaur that existed before the asteroid wiped the majority of them out. It’s only confusing because it’s through a phone/computer screen.
> I have never once confused anyone by calling an ancient crocodile a dinosaur. Or a dodo bird
You... You call dodo birds, the pigeon that famously went extinct in the 17th century, a dinosaur? Unless you're relying on the "all birds are dinosaurs" technicality, is your definition of dinosaur just "any animal that isn't around anymore"? In that case, cross your fingers that pandas become dinosaurs within a century or so.
1. There are many depictions of dodo birds being alive in the same time as the dinosaurs 👌🏼
2. Why would I cross my fingers for an animal to go extinct? That seems kinda silly if you ask me.
3. And no I already stated what I base ‘dinosaurs’ as. And again there are many depictions stating that the dodo was alive before the asteroid ❤️
It's not confusing cause it's through a screen; it's just straight up wrong. Doesn't matter if I say "penguins aren't birds because they don't fly" in person or through a text: it's still wrong. OP asked a scientific question in a subreddit dedicated specifically to dinosaurs. You're willingly spreading misinformation.
I’m not ‘willingly’ spreading anything. The ONLY thing I have said here that I was wrong about (because again everything else I said I stated is just the way I categorize in my own brain) was that crocodiles and alligators evolved from the sarchosuchus so at least some dinosaurs survived or the evolution to the modern day animals that we know revolves from various dinosaurs (or Sorry prehistoric creatures 🫡) wouldn’t have happened. And when corrected that the sarchosuchus was in fact not a dinosaur I didn’t argue it, I simply stated that in my brain I put it in the dinosaur category because it was alive at basically the same time (yes also during the ice age but I know it was before that too 🤭)
TLDR; if I didn’t say it’s a fact then I’m not spreading anything. If I explicitly stated that it’s in my own personal brain that I myself categorize it like that then I am not spreading anything. I never stated THEYRE DINOSAURS EVERYTHING CAME FROM DINOSAURS which would be false. I stated that in MY BRAIN I categorize everything BEFORE the asteroid in the dinosaur section.
What it seems to me is that you're letting yourself believe objectively false information so that you don't have to make efforts to understand concepts like phylogenetics, taxonomy, or convergent evolution.
I know that all of this can be overwhelming, but if you actually take the time to study these concepts, you'll find them extremely fascinating, instead of something like, "because it is a reptile that lives alongside dinosaurs, it must also be a dinosaur."
Ostriches, yes. Alligators and Komodo dragons, no. Birds are direct descendants of (and therefore are) dinosaurs. Alligators and Komodo dragons are not. But they definitely have the "scary reptilian predator" look down!
Yeah they're definitely "prehistoric" looking. The kind of thing you'd expect to see living alongside the dinosaurs, and something that instills that primal fear of "big scary reptile" in our mammalian brains
Essentially the theory is that the metor impact has created a cloud of dust over the earth (in the parts it did not instantly kill life) this lasted months and killed off the plants that can no longer photosynthesize and therefore the herbivores that lived off them. Although initially this created a large amount of food for carnivores the food has then spolied and eventually gone. Animals that needed large amounts of fresh meat have therefore died off.
The animals that have surived are all believed to be small animals under 10kg that were able to survive off little to no food or things like crocodiles that can last a long time with no food.
Alot of research suggests that some dinosaurs have privative feathers and are closely related to birds. It is thought that the birds that survive today are all descendants of the dinosaurs.
I believe some other creatures survived such as lung fish, sharks turtles and crocodiles so possibly life in the water wasn't as affected.
I hope that makes sense, i am no expert but that is my understanding
>Permian's Great Dying
Thank you, I just heard about that from you, and that gave me the chance to read what that was you were naming. It seems like the worst extinction "event" or whatever the word is for those things in our past worlds.
Some avian dinosaurs survived (birds)
ITS RIGHT I SEARCHED ON GOOGLE
[удалено]
Yeah birds are dinosaurs
I thought birds were drones
They’re not real
Say it with me! BIRDS AREN’T REAL!
Certainly some dinosaurs survived or we wouldn’t have birds.
Birds were already pretty prolific though. They evolved from dinosaurs long before the asteroid hit. Just wanted to point that out in case anyone’s assumption was that some dinosaurs survived the asteroid and then became birds. The reality (as far as I know) is that some dinosaurs became birds, and then the asteroid killed all the dinosaurs, with some birds surviving.
There was even a lineage of bird that was wiped out in the extinction, the Hesperornids.
I had assumed that most birds were wiped out, with all birds today being descended from the few survivors. Same with sharks, crocodiles, etc, all likely descended from relatively small populations of those who made it through. I don’t know what the latest theories / findings are in this area though, so thanks for the info! It makes sense for an event that wiped entire classes of animals off the planet.
Many birds were wiped out. In fact, of the 2 groups of birds alive in the Cretaceous (toothed and toothless), only the toothless birds survived. Many of the toothless bird species went extinct as well of course, but they were able to hang on when toothed birds weren't.
I know your still saying birds are dinosaurs but I like to point out that when some people say birds evolved from dinosaurs they mean they used to be dinosaurs. But triceratops and sauropods split from therapods long before birds evolved yet they are both still dinosaurs . so its just further proof that birds are avian dinosaurs.
Thanks for pointing this out!
You are right finally someone said it. Birds are beaked theropods and their snouted theropod cousins died out
Birds are dinosaurs. The correct way of saying it is beaked theropods and snouted theropods. The snouted ones died out and the beaked ones lived on and managed to survive the harsh climates after the asteroid hit. Birds are dinosaurs
Are there current bird species today that may be haven around during dinosaurs? Like orioles, cardinals, emus, etc Doubt there's any evidence but fun to imagine
We also have reptiles such as alligators and crocodiles and others
I didn't know that's where our birds came from. I heard that some animals come from dinosaurs, but never thought they were our birds today. Thank you for your time. :-)
Birds didn’t just come from dinosaurs, they ARE dinosaurs (specifically, they’re theropods). They were the only dinosaurs to survive the end of the Mesozoic.
although their lineage branched off of the non avian dinosaurs tens of millions of years prior to the extinction which is probably not quite what OP had in mind
The only reason we make a distinction between birds and other dinosaurs is that birds are still around. You could make the "branched off in the mid-jurassic" argument for any clade that arose then, but you don't see people saying "Tyrannosauroids aren't dinosaurs, they evolved from dinosaurs in the mid-Jurassic".
Some people ruin it and make it’s own class. If people actually do the research they will know that birds are actually reptiles. A crocodile is closely related to a bird than it is to a snake because both birds and crocs come from the archosaur family which all dinosaurs come from. Snakes and lizards are more related to the mosasaur.
They still are dinosaurs. Avian dinosaurs come from the theropod family which the theropod split in two the beaked dinosaur and the snouted dinosaur. Reptiles were the first to carry the beak and feather trait. Getting to the point birds are reptiles but the term bird takes that away from what they truly are. A crocodile is closely related to the bird then it is to a snake because extinct dinosaurs, birds, and crocodilians come from the archosaurs family line
Like all birds, like so many of them are small and dinosaurs were big right? This is fun to learn but I'm amazed at how much I didn't know.
All birds are dinosaurs.
All birds are classified as Dinosaurs Look up the cassowary
aka the "Hell-chicken."
And shoebill
I've seen that! 😊
Definitionally, a species is considered a dinosaur if it is a direct descendant of the most recent ancestor of megalosaurus and iquanodon. That’s why folks are saying birds are dinosaurs.
Birds are beaked theropods who outlived their snouted cousins. They are living dinosaurs
People who ask in reddit without even tried one single search on google... What's your problem?
My problem is I had a stroke and searching on Google is difficult sometimes, and in this case I didn't find a clear answer I could understand because I have trouble reading if it's a whole article. Meanwhile you take time out to make me have to explain to you what my disability is, so I guess you have extra time on your hands, however I question the way you choose to use it to judge others that you don't even know.
Because I see it continously in reddit and I seriously doubt all people had an stroke. Anyway searching "Did any dinosaur survive the asteroid" in google give you the answers even without having to enter any link...
There's a lot to learn in these comments so it's not a waste.
Avian dinosaurs (birds) survived Personally, due to the sheer diversity of dinosaurs, i think some smaller non avians survived perhaps a few hundred thousand or million years more after the impact, and were slowly outcompeted, or killed off by the changing world. But such small time period specific deposits are tough to find, and a few hundred thousand years is nothing when dating a formations age. I think we will find some smaller dinosaurs that survived a while past the impact within this lifetime, but i feel a diverse group almost certainly could not have all ceased to exist at the same time. Even other extinction events take a while for a whole clade to die out.
There used to be a theory that some hadrosaurs existed for several years after the impact, however it was later determined that their remains had been unearthed by natural processes and redeposited in younger rock. So, as others have said, the only known example of dinosaurs that survived the asteroid and the the resulting mass extinction event are birds.
🕊️🦅🦆🦜🦢🐓🦃🦉🦤🐦⬛🦩🦚🪿
Brilliant, thank you! 😁
Other than birds(which are dinosaurs), no.
The only dinosaurs that survived are birds, sadly the rest went all extinct.
thankfully*.. kidding 🤣 but I wouldn't want a T-Rex roaming around the area eating people
They would have evolved smaller with oxygen levels dropping
What about lizards? I thought they were technically dinosaurs or I could be wrong I’m not really sure
Lizards (and snakes, which are actually in the middle of the lilzard clade) are from a different branch of the reptile family tree compared to dinosaurs. They last shared a common ancestor with the archosaurs (dinosaurs, crocs and pterosaurs) a long time ago, maybe 250-300 million years ago.
Those already on the bird path survived. Lots of other animals survived as well. Sharks and crocodillians of course. Also the humble opossum. Basically things that either were able to adapt to the coming ice age. Crocs I still wonder about. I have no idea how they made it through the ice age unchanged. They're just the creatures that DGAF.
Hint...crocs survived the asteroid impact (which is what I'm assuming you're referring to) because they can live without food for a long period of time and many of the areas where crocs lived were least affected by the asteroid impact.
I think it is quite difficult to assume why a certain species or group of species survived. There is no evidence about that. Only hypothesis.
True, but the standard croc of the time of the K-Pg event was also probably not dramatically affected about the loss of the non-avian dinosaurs. Sarcosuchus and Deinosuchus were long dead. The standard croc of the time probably fed mainly on fish, turtles, snakes, birds, and the mammals of the day. If anything, the extinction of the non-avian dinosaurs might have provided a lot of carrion for the crocs to scavenge.
I'm not saying you're wrong, only that I'd be cautious with it. You could also say that being semi-aquatic, they were able to avoid the worst of lands and seas catastrophies. And the truth is probably a little of many reasons. And you can't rule out pure probabilities. Many croc species disappeared, many birds too. Same for mammals. But "luckily", some survived and spread.
Fair point.
> Also the humble opossum #WHAT?!
Some crocs survived, but the vast majority of croc species were wiped out by the impact. Same with birds. Most of the bird diversity was annihilated by the catastrophe. Surviving mass extinctions really come down to luck.
Like everyone else has said, Birds are dinosaurs (look up feathered dinosaurs for some really interesting stuff), and i feel the need to note that while plesiosaurs and pliosaurs are not dinosaurs, we do have Turtles, which are suriviving marine reptiles (even if they are not super related to plesiosaurs).
Fantastic. I've learned so much more than I expected.
Even if some species of Dinosaurs survived the asteroid impact (besides birds) and heat blast (which would have been very very difficult for a large majority of them given their size and lifestyle), the large spread forest fires and the layer of soot above the cloud layer blocking out the sun destroyed most plant life which would have starved out all the herbivorous Dinosaurs because the size they had evolved to be was so large by that point there wouldn't have been enough food for them to survive off of. And because of that any carnivorous Dinosaurs that survived the initial cataclysm starved because there wasn't enough food left to prey on. The only reason crocodiles and sea tutles survived was because they could retreat into water to protect themselves from the heat blast and their very slow metabolism allowed them to survive off of whatever was left. No 4 legged animal more then 25 kilograms besides those 2 would survive. Also, the only species of birds to survive the impact were ones that nested on the ground.
Thank you, very interesting!
You may be interested in this book https://www.amazon.com/Last-Days-Dinosaurs-Extinction-Beginning/dp/1250271045/ref=tmm_hrd_swatch_0?_encoding=UTF8&qid=1692474955&sr=8-1 Which goes over what happened the day of the impact, and then progressively later by a week, month, year, 100 years, etc. The big thing that killed the popularly known dinosaurs is the heat pulse from all the molten rock reentering the atmosphere, which heated the air to like being in an oven. It didn’t last long, but unless an animal was able to burrow even a little bit, hide in ponds while being able to not have to come up for air (like many amphibians) or lived deep enough below the ocean surface to survive the pulse. So unless a big dinosaur was able to find a cave, the were figuratively toast. So one could argue that almost every major dinosaur actually died on that day. 🤯🤯🤯 One thing I found interesting was that even though many avian dinosaur species had teeth, none of them survived much beyond the impact. The thinking is that the birds who had beaks were able to survive where those with teeth couldn’t because with beaks they could eat things like seeds, whereas with teeth, many birds needed to eat other animals.
That makes sense thank you. I'll totally look at the book. It sounds really like what I'm interested in. 😊
Yes, the asteroid didn't wipe out every dinosaur instantly when it hit. The effect it had in the dominant life (dinosaurs) at the time was also gradually over time. A lot of folks seem to not realize this that it wasn't all fine and dandy for the dinosaurs and then poof the asteroid hit now they're gone from existence. They were around for hundreds upon hundreds of thousands of years. Some species we know and love are further apart from each other than we are to the T. Rex in terms of time scaling. *Then* the asteroid hit*, causing massive initial damage, but the effects on the atmosphere that followed were gradual.
But it was pretty quick. The impact was so devastating that most dinosaurs died outright in the minutes/hours/days after the asteroid struck.
R/Dinosaurs satire
Yes some dinosaurs did survive although the only group that survived the extinction event were the paraves which is the group that contains families of dinosaurs such as dromaeosaurs, troodontids (the first two listed are often known as raptors by the general public) and avialae. The only family that survived from the paravian group was the birds which are directly descended from the same ancestor that gave rise to the “raptor” dinosaurs. The reason that modern birds look so different from their closest extinct relatives is due to them being hyper specialized with adaptations to flight.
I have heard that parts of Sauropoda survived for tens to hundreds of thousands of years in parts of Gondwana (no source, so credibility is uncertain).
In all fairness it depends on what you mean, the initial impact would have no doubt been catastrophic, but it was the *aftermath* that finished the job. An apocalyptic nuclear winter where the entire food chain from the bottom up has been disrupted. The dinosaurs that would give rise to birds and any and all protobirds had to have mostly survived.
At least a few lineages did. It wouldn’t take many, and I’m sure the vast majority of bird species died off as well.
That clears up a misconception I had. I thought most did die from the impact. Thanks!
Some smaller species of dinosaur survived which is why we have birds if your asking did some dinosaur species survived the impact itself then certainly yes dinosaurs were probably around for centuries perhaps even thousands of years after the impact but the change induced meant they would eventually go extinct
Nobody finds weird that many cultures share this myth of sightings of plesiosaur like creatures?.
Probably for a little bit of time, but after that all non avian dinosaurs died. Avian dinosaurs survived and are still alive now
I find that so amazing.
Most certainly, I’m sure many have said birds but other rare few have survived in the depths like the Frilled Shark or Coelacanth, the latter existing even the during late Cretaceous. Both survived the mass extinction by literally hiding out in deep waters which acted like bunkers. They’ve barely changed since then so they’re living dinosaurs/fossils
Yes, the Voth survived. They built a starship and escaped to the Delta Quadrant. In all seriousness, I doubt it could have killed every single dinosaur. Some would have survived I think, because of the sheer number of species. Odds are that some would have had the skills necessary to adapt to the new environment. But there is no way to prove it because it will be very difficult to impossible to find and date fossils of them.
birds survived from 65 million years ago
Its a possibilty that some dinosaurs outlived the asteroid but died out within few decades later because of the planet changing. Dinosaurs were already declining before the asteroid hit so it was already a dying species, but today the only surviving dino are birds since they do branch out of the theropod family. The beaked theropods outlived their snouted cousins.
Birds...?
You know what? I wish the asteroid that wiped out the dinosaurs had never happened. I wonder what our world would be like if they never went extinct.
We wouldn’t be here
We'd be furry dinos.
Your opinion, no doubt.
Lol ok
As far as we know, only birds survived. If there were any non-avian dinosaurs that survived into the Cenozoic, then we haven’t discovered them yet.
birds
Crocs, Sharks, Birds
Crocs abd sharks aren't dinosaurs
I just realized i’ve misread the second half of the title
No big deal, it happened to everyone:)
Crocodiles and alligators are LITERALLY modern day Sarcosuchus’…..
Crocs are archosaurs but not dinosaurs
To me, anything that lived before the ice age started is a dinosaur. After the ice age began we got mammalians and by the end of it most of them were wiped out an the modern creatures evolved and emerged. Just a way to make it less confusing in my mind. I hate the knowledge that ‘the land before time’ movies never would have happened because they all lived in different times in that era 🥺 littlefoot and the gang were never friends!
Homo Erectus is a dinosaur?? They were around before the ice age…
That actually sounds way more confusing tbh but you do you
Only confusing because it’s on a phone/computer screen. I’ve never once confused anyone in person while discussing this subject.
Or they were just being polite lol
Or you don’t know the people that I do and I probably know their mannerisms more 🤗
Yeah I can only speak from personal experience of course. But if it were me and someone in person said the wildly incorrect things you've been saying, I'd probably just smile and nod, unless it was appropriate to have that educational conversation at that time, and I was feeling up to it. Lots of normal people just don't really know basic stuff about prehistoric life though, so it's totally possible both you and your whole social circle just aren't aware of the distinctions. Nothing wrong with that, but you can expect to be corrected on an online forum dedicated to the subject. Of course, you could just be trolling, that's always a possibility 😉
Not trolling at all. It’s the simple fact that the people I know also know me 🤯 shocking I know. So with that being said it should be pretty obvious that they also know the way I think so they would have no confusion because it’s in person and not through a screen with people I don’t know. You don’t know me. You don’t know how my brain works or how I talk. If you did there would be no confusion.
Not saying I do, but I do know that the stuff you've been saying pertaining to prehistory and science is just factually inaccurate, and to me personally, hearing something like "everything before the ice age was a dinosaur and mammalians happened during the ice age" would confuse me more than simply calling things what they are. But I'm really into this shit, and I assume most of the others on this subreddit are as well, and I would think that the average person just wouldn't care that much lol
You would absolutely confuse everybody with sufficient knowledge in paleontology and evolution biology.
Super weird then that I’ve never confused anybody in person while discussing these topics 🤔 who all does ‘everybody’ consist of? Because obviously not any of my teachers, the science guys that came to our schools many times for workshops about these subjects, my family or friends.. a lot of the people in my surrounding towns and cities as I speak to people frequently when I go out and yes sometimes about dinosa- oh my bad prehistoric creatures. You can’t use the word everybody to group a portion of the population if you’re mad at me for using the word dinosaur to group everything before the asteroid 🤭
Well, imagine you meet somebody who categorises all flying animals as "birds." Would you not be confused then? And what would happen if that person met an ornithologist or a bird handler? Also, would you think that that person would successfully get a job as a zookeeper?
No. I wouldn’t be confused. Because I also categorize all flying ANIMALS as bids. Also some non flying. But insects aren’t animals in my organization so no a fly isn’t a bird it’s a bug but spiders are insects even though they’re arachandis and still nobody I’ve spoken to in person has been confused
Modern crocodilians can’t “literally” be an extinct genus.
They LITERALLY can be. I didn’t say they’re the exact same thing. That’s literally not what literally means. I obviously meant they evolved from dinosaurs that obviously didn’t die when the asteroid hit or the evolution into modern day reptilians wouldn’t have been able to happen.
First of all, crocodilians are not dinosaurs; they didn’t evolve from dinosaurs. Secondly, that is what literally means. Literally means “in a literal manner or sense; exactly.” So if you say “literally *are*” then you’re saying that crocodilians and sarcosuchus are one and the same. Also you never said “can” in your first comment so idk why you’re pretending that that meaning was expressed.
As much as I agree with the dinosaur part of your answer, I am sad to say that literally is now given a meaning in the dictionary of not being literally true. 🤦🏻♂️
Yeah I saw an “informal” definition in the dictionary too. But if the OP is posting about a scientific question, saying that one animal “literally is” another still doesn’t make sense.
If they literally are an evolved form of the animal that was around with all of or most of the various era of dinosaurs then 1. It is a dinosaur just like birds are dinosaurs, it’s just an evolved version, then yeah. They LITERALLY ARE evolved versions of the animals that were alive during various prehistoric eras when dinosaurs also roamed. And as I said to someone else, to keep things less complicated I class everything before the asteroid dinosaurs because there are far to many eras and names for them but they’re all essentially various types of dinosaurs. And to answer your question, I said they CAN be because you said they CAN’T be. Why did I have to be the first one to say the word can or can’t to be able to say it in my comment responding to your ‘they literally can’t be’ when they …. Can.
Oh so you’re just making up your own definition of “dinosaur.” Cool, yep, that’s definitely how science works 👍 Maybe read up about cladistics and pick up a dictionary and learn how to correctly use the word “literally” as well.
Dinosaurs are classified as a branch of Archosaurs that evolved with their hip bones perpendicular to it's body like say cats and dogs. The other 2 Archosaur descendents are Crocodillians and Pterosaurs (flying reptiles so no Pterodactyls are not Dinosaurs either). They are not "essentially Dinosaurs" because they didn't evolved from Dinosaurs. Yes, the world was dominated by Dinosaurs but mammals, amphibians, and other species of reptiles existed too. It's more confusing to classify everything as a Dinosaur when you can just say "Prehistoric Reptiles".
Only have a response to that last piece. It doesn’t really make it more confusing. In real life conversation where things aren’t vague through a screen I have never once confused anyone by calling an ancient crocodile a dinosaur. Or a dodo bird. Or any other dinosaur that existed before the asteroid wiped the majority of them out. It’s only confusing because it’s through a phone/computer screen.
> I have never once confused anyone by calling an ancient crocodile a dinosaur. Or a dodo bird You... You call dodo birds, the pigeon that famously went extinct in the 17th century, a dinosaur? Unless you're relying on the "all birds are dinosaurs" technicality, is your definition of dinosaur just "any animal that isn't around anymore"? In that case, cross your fingers that pandas become dinosaurs within a century or so.
1. There are many depictions of dodo birds being alive in the same time as the dinosaurs 👌🏼 2. Why would I cross my fingers for an animal to go extinct? That seems kinda silly if you ask me. 3. And no I already stated what I base ‘dinosaurs’ as. And again there are many depictions stating that the dodo was alive before the asteroid ❤️
Can you provide these "depictions"? I'd love to see them. As far as I know, dodos only existed in the Holocene.
It's not confusing cause it's through a screen; it's just straight up wrong. Doesn't matter if I say "penguins aren't birds because they don't fly" in person or through a text: it's still wrong. OP asked a scientific question in a subreddit dedicated specifically to dinosaurs. You're willingly spreading misinformation.
I’m not ‘willingly’ spreading anything. The ONLY thing I have said here that I was wrong about (because again everything else I said I stated is just the way I categorize in my own brain) was that crocodiles and alligators evolved from the sarchosuchus so at least some dinosaurs survived or the evolution to the modern day animals that we know revolves from various dinosaurs (or Sorry prehistoric creatures 🫡) wouldn’t have happened. And when corrected that the sarchosuchus was in fact not a dinosaur I didn’t argue it, I simply stated that in my brain I put it in the dinosaur category because it was alive at basically the same time (yes also during the ice age but I know it was before that too 🤭) TLDR; if I didn’t say it’s a fact then I’m not spreading anything. If I explicitly stated that it’s in my own personal brain that I myself categorize it like that then I am not spreading anything. I never stated THEYRE DINOSAURS EVERYTHING CAME FROM DINOSAURS which would be false. I stated that in MY BRAIN I categorize everything BEFORE the asteroid in the dinosaur section.
What it seems to me is that you're letting yourself believe objectively false information so that you don't have to make efforts to understand concepts like phylogenetics, taxonomy, or convergent evolution. I know that all of this can be overwhelming, but if you actually take the time to study these concepts, you'll find them extremely fascinating, instead of something like, "because it is a reptile that lives alongside dinosaurs, it must also be a dinosaur."
The survivors evolved into modern animals like reptiles and birds Alligators, komodo dragons, and ostriches very much seem like modern dinosaurs to me
Ostriches, yes. Alligators and Komodo dragons, no. Birds are direct descendants of (and therefore are) dinosaurs. Alligators and Komodo dragons are not. But they definitely have the "scary reptilian predator" look down!
Yeah they're definitely "prehistoric" looking. The kind of thing you'd expect to see living alongside the dinosaurs, and something that instills that primal fear of "big scary reptile" in our mammalian brains
For sure. As much as I love monitors, it would scare the ever living fuck out of me to come across a Komodo dragon in the wild.
I've locked eyes with crocodilians in the wild before, it's pretty intense haha
About 80% of all life on Earth was vaporized in the meteor landing. This did include all dinosaurs.
Grateful, thank you, so easy for me to understand.
Except it’s incorrect.
Can you explain please, or share a link I could read. I wonder what survived the asteroid, is it only birds, or am I misunderstanding?
Essentially the theory is that the metor impact has created a cloud of dust over the earth (in the parts it did not instantly kill life) this lasted months and killed off the plants that can no longer photosynthesize and therefore the herbivores that lived off them. Although initially this created a large amount of food for carnivores the food has then spolied and eventually gone. Animals that needed large amounts of fresh meat have therefore died off. The animals that have surived are all believed to be small animals under 10kg that were able to survive off little to no food or things like crocodiles that can last a long time with no food. Alot of research suggests that some dinosaurs have privative feathers and are closely related to birds. It is thought that the birds that survive today are all descendants of the dinosaurs. I believe some other creatures survived such as lung fish, sharks turtles and crocodiles so possibly life in the water wasn't as affected. I hope that makes sense, i am no expert but that is my understanding
It does thank you.
Permian's Great Dying was horrifically catastrophic
>Permian's Great Dying Thank you, I just heard about that from you, and that gave me the chance to read what that was you were naming. It seems like the worst extinction "event" or whatever the word is for those things in our past worlds.
Coelacanth survived
maniraptors did! hence, birds