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Palaeontology

Dinosaurs died from sudden temperature drop ?

By T.K. Randall
April 25, 2010 · Comment icon 28 comments

Image Credit: Wikimedia Commons
British scientists have claimed that the dinosaurs died due to a temperature drop rather than an impact.
A sudden plummeting of global sea temperatures 137 million years ago would have been the first step towards their eventual extinction as oppose to as the result of a single cataclysmic asteroid impact the new research has claimed.
British researchers claim that a sudden plummeting in the sea temperature of 16F (9C) more than 137 million years ago was the first step towards their eventual road to extinction.


Source: Telegraph | Comments (28)




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Comment icon #19 Posted by Mandrake 14 years ago
I still have a hard time grapling with what could cause extinction on such a large scale. It's pretty crazy to think that a planet supporting such collosal animals with an unfathomably complex ecosystem could just dissapear. I am far from being an expert in this field but I am of the understanding that dinosaurs came in all sizes and only a very small number were in fact collosal.
Comment icon #20 Posted by Mandrake 14 years ago
They grew feathers... Good response Rhomphaia I would propose that flight would also be a most excellent survival technique to be able to forage farther and faster than any other non-aquatic species. This would give the feathered dinos 'the edge' over pedestrian species if food became scarce.
Comment icon #21 Posted by Mandrake 14 years ago
I am still waiting for the theory that excessive junk mail caused the extinction. I suspect it was because the international treaty banning dino hunting was ignored by a handful of compassionless countries. Or perhaps someone invented dino fin soup?
Comment icon #22 Posted by Amberlight 14 years ago
They grew feathers... My conure is totally a decendant of T-Rex, especially when he bites me.
Comment icon #23 Posted by Ollie30001 14 years ago
Maby aliens came to visit back then and decided it would be best to kill them off in some way, maby to make way for us, maby it was us...
Comment icon #24 Posted by Rhomphaia 14 years ago
I suspect it was because the international treaty banning dino hunting was ignored by a handful of compassionless countries. Or perhaps someone invented dino fin soup? That was actually an obscure book reference where junk mail literally falling from the sky caused the collapse of western civilization. I forget the name, but the whole thing was a pretty funny parody of the expedition to unearth King Tut's tomb.
Comment icon #25 Posted by :PsYKoTiC:BeHAvIoR: 14 years ago
I thought it was official that they died because of an asteroid. Now its because of the temperature that drop'd back in their time? Whats crazy theory are they gonna think of next... I doubt any of the theories concerning the extinction of dinosaurs will have an official explanation. I personally find both theories plausible in its own way.
Comment icon #26 Posted by Abramelin 14 years ago
The article of the OP talks about the Atlantic Gulf Stream during the Cretaceous.... How would that Gulf Stream have looked, if it did even exist back then?? There wasn't much of a North Atlantic, and the Caribbean had an open connection with the Pacific. .
Comment icon #27 Posted by Wyrdlight 14 years ago
Well in the evolustion part of my Geography degree we were taught that the dino's died from a combination of long term climate change topped off by a comet strike that futher lowered global tempreture and finshed them off, though they would have been in decline for a long time prior to the comet. It was the straw that broke the camels back so to speak.
Comment icon #28 Posted by Msparx 14 years ago
Yes it would , that was I was thinking, an asteroid impact can drastically change the Earth's temperature that the dinosaur were not able cope up....Maybe they are right, a sudden temperature drop did kill the dinosaurs ,,,but it was triggered by an asteroid. That's most likely. It's not impossible that the dinosaurs died of a drop in temperature (assuming that they were cold-blooded), but that raises the question, "What caused said decrease?" The most probable scenario is that a meteor collided with the planet at speeds of roughly 20,000 ft/s with a force of about 100,000 megatons of energy, ... [More]


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