[Petrochemicals (OP)]

Now the extinction at the kt boundary wiped the dinosaurs out pretty much, some survived in limited pockets apparently.

https://www.livescience.com/amp/7747-dinosaurs-survived-asteroid-impact.html

But why did they die out?

Dinosaurs where of all sizes and persuasions. If they where cold blooded why did the reptiles survive? If warm why where the mammals spared? Why would an entire clave of creatures perish and not any of the others?

[Origin]

Some dinosaurs did survive, we call them birds.

[Petrochemicals (OP)]

Some dinosaurs did survive, we call them birds.

That would require a rate of evolution in reaction to the kt event far exceeding viruses.

[Kryptid]

That would require a rate of evolution in reaction to the kt event far exceeding viruses.

How do you figure?

[alancalverd]

What killed the dinosaurs? Complacency.

[Origin]

That would require a rate of evolution in reaction to the kt event far exceeding viruses.

You do realize that feathered flying dinosaurs and ground dwelling dinosaurs were contemporaries, don't you?

[Petrochemicals (OP)]

That would require a rate of evolution in reaction to the kt event far exceeding viruses.

You do realize that feathered flying dinosaurs and ground dwelling dinosaurs were contemporaries, don't you?

That would require a rate of evolution in reaction to the kt event far exceeding viruses.

How do you figure?

Sponaneos evolution in the event of a comet strike is quite a trait. As the dinosaurs dissapeared entirely it would mean that all Dinosaurs instantaneously transformed into birds. Many types of animals survived.  I have read that only omnivores survived, but this does not fit with crocodilians.

[Kryptid]

Sponaneos evolution in the event of a comet strike is quite a trait.

That didn't happen.

As the dinosaurs dissapeared entirely it would mean that all Dinosaurs instantaneously transformed into birds.

No it doesn't. Birds already existed before the asteroid struck.

[Petrochemicals (OP)]

Sponaneos evolution in the event of a comet strike is quite a trait.

That didn't happen.

that's the point.

As the dinosaurs dissapeared entirely it would mean that all Dinosaurs instantaneously transformed into birds.

No it doesn't. Birds already existed before the asteroid struck.

So did dinosaurs, but they all became extinct.

[Kryptid]

that's the point.

Nobody ever claimed otherwise, so I'm not sure why you brought it up.

So did dinosaurs, but they all became extinct.

Not the birds.

[Petrochemicals (OP)]

that's the point.

Nobody ever claimed otherwise, so I'm not sure why you brought it up.

in reply please see reply #6 by petrochemicals

So did dinosaurs, but they all became extinct.

Not the birds.

Birds where not the dinosaurs. For all the dinosaurs to evolve to birds once the asteroid hit would require a rate of evolution faster than those of viruses.please see quote below

, That would require a rate of evolution in reaction to the kt event far exceeding viruses.

You do realize that feathered flying dinosaurs and ground dwelling dinosaurs were contemporaries, don't you?

[Origin]

For all the dinosaurs to evolve to birds once the asteroid hit would require a rate of evolution faster than those of viruses.please see quote below

Why do you keep saying that?  Did you not read or not understand my response?

[Petrochemicals (OP)]

For all the dinosaurs to evolve to birds once the asteroid hit would require a rate of evolution faster than those of viruses.please see quote below

Why do you keep saying that?  Did you not read or not understand my response?

Given that birds are reptiles, I find your lack of understanding mystifying.

[Kryptid]

For all the dinosaurs to evolve to birds once the asteroid hit would require a rate of evolution faster than those of viruses.

They didn't: they evolved into birds before the asteroid hit. Well, at least one branch of them did. All of the others went extinct.

I find your lack of understanding mystifying.

As I find your lack of understanding that no one in here is proposing that the asteroid impact prompted anything to evolve into birds.

[Origin]

Given that birds are reptiles, I find your lack of understanding mystifying

Birds are reptiles(?), that's absurd!  Well that explains a lot, you have no idea what you are talking about.

[Kryptid]

Birds are reptiles(?), that's absurd!

He's technically correct. In evolutionary biology, a clade can be defined as a subset of the clade it evolved from. Birds evolved from dinosaurs, which in turn evolved from reptiles. So birds are both dinosaurs and reptiles. Yes, you can even take it to the extreme and say they are fish, too.

[evan_au]

TNS podcast  had an interview with dinosaur researchers working in northern Alaska. They believe from fossils of baby dino teeth that the larger dinosaurs like the duck-billed variety overwintered there (despite 3 months of no direct sunshine) - perhaps protected by a layer of feathers and/or hibernation.

Migratory birds that were around at the time could have flown south for the winter, and returned when the sun came up.

[Petrochemicals (OP)]

Given that birds are reptiles, I find your lack of understanding mystifying

Birds are reptiles(?), that's absurd!  Well that explains a lot, you have no idea what you are talking about.

Birds are reptiles(?), that's absurd!

He's technically correct. In evolutionary biology, a clade can be defined as a subset of the clade it evolved from. Birds evolved from dinosaurs, which in turn evolved from reptiles. So birds are both dinosaurs and reptiles. Yes, you can even take it to the extreme and say they are fish, too.

Aha, I've got you now!

Anywhooo!

You have

Dinosaurs can therefore be divided into avian dinosaurs, or birds; and the extinct non-avian dinosaurs

So thats

avian dinosaurs, or birds

And

extinct non-avian dinosaurs.

So the dinosaurs got killed and did not instantaneously evolve into birds. Anyway, I'm off in my non flying car, or my car as I call it.

[Petrochemicals (OP)]

TNS podcast  had an interview with dinosaur researchers working in northern Alaska. They believe from fossils of baby dino teeth that the larger dinosaurs like the duck-billed variety overwintered there (despite 3 months of no direct sunshine) - perhaps protected by a layer of feathers and/or hibernation.

Migratory birds that were around at the time could have flown south for the winter, and returned when the sun came up.

That is a further quandary. Dinosaurs appear better suited to survive the colder conditions. No creature above 25kg passed the kt boundary though.

[Kryptid]

So the dinosaurs got killed and did not instantaneously evolve into birds.

There isn't a soul in this thread who so much as implied that such a ridiculous thing occured.