Dinosaur Extinction cause confirmed (finally)

[mrk]

I learnt some new stuff while looking into this article. Stuff like how Concorde's cruising speed was faster than Earth's rotation at the equator and that the asteroid that crashed into the Earth 65 million years ago had an approx speed of 21810MPH.

It's official: The extinction of the dinosaurs and a host of other species 65.5 million years ago was caused by a massive asteroid that crashed into the Gulf of Mexico, creating worldwide havoc, an international team of researchers said Thursday.

The 7.5-mile-wide asteroid was travelling at a speed about 10 times that of a rifle bullet when it hit, releasing a billion times more energy than the Hiroshima atom bomb. The impact blew dirt and rock around the world, set massive wildfires, knocked down forests worldwide, triggered massive tsunamis and earthquakes of magnitude 11 or larger and even caused parts of the continent to slip into the ocean.

Continued

Alt source

BBC Source

 

[Mp4]

Nothing we already knew imo :/

apart from the velocity of the asteroid

 

[mrk]

It was never confirmed before, it is confirmed now.

 

[Cosimo]

It was never confirmed before, it is confirmed now.

You mean a group of scientists have concluded that research evidence points to this crater as being the cause. Another group may turn up and say something else.

 

[mrk]

No other group will.

Writing in Science journal, they rule out alternative theories such as large-scale volcanism.

The analysis has been discussed at the 41st Lunar and Planetary Science Conference (LPSC) in the US.

A panel of 41 international experts reviewed 20 years' worth of research to determine the cause of the Cretaceous-Tertiary (K-T) mass extinction, around 65 million years ago.

The evidence to date is far too conclusive now anyway for any other theories.

 

[Cosimo]

The evidence to date is far too conclusive now anyway for any other theories.

That's what they say.

 

[Destination]

No other group will.
The evidence to date is far too conclusive now anyway for any other theories.

Don't be absurd!
The evidence is all faked by a trick from God, Earth didn't exists more than 6000 years ago, it is all a trick.....

ask any southern in the US, or George W, he can confirm it.....

 

[mattscold]

Still no word on how hundreds, nay thousands of breeds of Animals survived this then? I had my hopes up I would say nothing is confirmed imo.

 

[yermum]

Didn't you know that Noah sailed the ark down the grand canyon?

 

[Combat squirrel]

Still no word on how hundreds, nay thousands of breeds of Animals survived this then? I had my hopes up I would say nothing is confirmed imo.

Probably because most breeds of animals at that time (read mammals) were very small creatures (based on current fossil record evidence), that mostly lived underground, in burrows etc, think mice / rat size creatures, certainly no larger than a badger or a small dog. It is hypothesized that these survived sheltered and fed off underground flora and fauna, worms etc, due to there size and underground dwellings they were well placed to survive such an event. One thing thats highly difficult to argue with is the fact that a massive impact did happen at the time of the dino extinction, the evidence is everywhere - literally.

EDIT: A few other things to think about are common sense related, dinosaurs were massive and required huge amounts of food, with plants being destroyed in the global winter that would follow such an event its little wonder they all died, also its just occurred to me if anyone knows weather they were warm or cold bloodied? mammals being warm bloodied could maintain there body temp without the sun.......within reasonable limits, and probably survived by living off roots, worms, mushroom and similar type of things that can grow underground, additionally there would have been a couple of places above ground still maintaining a low energy eco system, they could have been there in addition, just got to imagine the scenario and figure out what could happen or most likely happen

 

[Gustov]

Probably because most breeds of animals at that time (read mammals) were very small creatures (based on current fossil record evidence), that mostly lived underground, in burrows etc, think mice / rat size creatures, certainly no larger than a badger or a small dog. It is hypothesized that these survived sheltered and fed off underground flora and fauna, worms etc, due to there size and underground dwellings they were well placed to survive such an event. One thing thats highly difficult to argue with is the fact that a massive impact did happen at the time of the dino extinction, the evidence is everywhere - literally.

This guy knows his stuff, seeing that he is a combat squirrel and all....

 

[Aled]

My primary school teacher said to us that they went extinct because they had two brains, one in the head and one in the tail.

After a while the brains would want to do different things, so they would get confused and just die.

Was anyone else told this in primary school?


ARGH, on my brothers pc again. bledd

 

[bledd]

logged in

 

[mattscold]

Probably because most breeds of animals at that time (read mammals) were very small creatures (based on current fossil record evidence), that mostly lived underground, in burrows etc, think mice / rat size creatures, certainly no larger than a badger or a small dog. It is hypothesized that these survived sheltered and fed off underground flora and fauna, worms etc, due to there size and underground dwellings they were well placed to survive such an event. One thing thats highly difficult to argue with is the fact that a massive impact did happen at the time of the dino extinction, the evidence is everywhere - literally.

EDIT: A few other things to think about are common sense related, dinosaurs were massive and required huge amounts of food, with plants being destroyed in the global winter that would follow such an event its little wonder they all died, also its just occurred to me if anyone knows weather they were warm or cold bloodied? mammals being warm bloodied could maintain there body temp without the sun.......within reasonable limits, and probably survived by living off roots, worms, mushroom and similar type of things that can grow underground, additionally there would have been a couple of places above ground still maintaining a low energy eco system, they could have been there in addition, just got to imagine the scenario and figure out what could happen or most likely happen

I agree with those points, but what about large crocodiles for example that existed at least up to biblical times, as well as giant Monitor lizards such as Megalania and of course, the komodo dragon. It is something i have looked into and i just can't quantify it to myself that the theory holds true to be honest.

EDIT : I do agree no doubting that a meteorite struck earth, no arguement there.

Edit: Edited for hungover ramblings.

 

[Combat squirrel]

I agree with those points, but what about giant crocodiles for example that existed at least up to roman times, as well as giant Monitor lizards such as Megalania and of course, the komodo dragon. It is something i have looked into and i just can't quantify it to myself that the theory holds true to be honest.

Giant crocs in roman times? this ill have to read up on.... the species you mention other than that, crocs, komodo dragons etc are very very hardy cold bloodied creatures, you raise a good point though, id suggest somewhere there was either just enough sun for them to survive, or that there was another favorable heat source, think hot and warm wells and volcanic areas, yellow stone park for example (well its yellow stone now, the hot spot underneath would have been somewhere else 65 mil years ago in terms of continents) Additionally being cold bloodied they require FAR LESS sustenance than mammals, also Id of bet that they were not very large crocs etc, probably smaller than todays creatures and of course could live off all the appropriately sized mammals scuttering about. So there you go, we have food, heat, and there need for less food, as well as them being a lot smaller than any dino, it all makes sense in that respect and is pretty reasonable.

 

[Sankari]

My primary school teacher said to us that they went extinct because they had two brains, one in the head and one in the tail.

After a while the brains would want to do different things, so they would get confused and just die.

Was anyone else told this in primary school?

No, I wasn't told this in primary school. Probably because it is utter garbage.

Dinosaurs did not possess two brains. Paleontologists have determined that the secondary "brain" allegedly found in some dinosaur species was actually little more than a large nerve centre (probably for controlling the hindquarters and rear legs). It was not a brain and certainly did not possess independent decision-making capabilities.

 

[mattscold]

You make good points there. When i say roman times that was a slight inaccuracy on my part, but large crocodilians are talked about in the bible, so my apologies for the roman statement and duly edited.

 

[Nitefly]

Rather than a super-explosion of doom, I like entertaining the following hypothesis:

Rather than killing dinosaurs from impact of the meteor, dinosaurs may have died out due to biased sex ratios. Modern reptiles such as turtles and crocodiles can cause a litter of all male or all female offspring from eggs by incubating their eggs at certain temperatures (by only a few degrees centigrade).

If is hypothesised that the dust thrown into the atmosphere by the meteor could have changed the temperature of the earth's atmosphere considerably. Correspondingly, this might have meant that all offspring were subsequently all male and all female, causing the relatively 'insta-death' of a whole generation, particularly if dinosaurs were few and far between specially within a species.

Of cause, this does make us ask why the ancestral crocodiles and other reptiles managed to make it through, but it might be related to the abundance of food dinosaurs need to survive which might have been damaged by the meteor, or that these reptiles were at least partially aquatic.

Either way, it's amusing to imagine a massive t-rex sausage-fest

 

[Wang Computer]

My primary school teacher said to us that they went extinct because they had two brains, one in the head and one in the tail.

After a while the brains would want to do different things, so they would get confused and just die.

Was anyone else told this in primary school?

Tell me you're joking?

 

[Combat squirrel]

You make good points there. When i say roman times that was a slight inaccuracy on my part, but large crocodilians are talked about in the bible, so my apologies for the roman statement and duly edited.

No worries squire ! good to have a gentlemanly scientific debate on a sat morning! As for the bible, well ...its hardly the greatest of places to find any sort of factual information! lol