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The asteroid was about 6 miles across. When it crashed into what is now the Yucatan Peninsula, it threw so much dust into the upper atmosphere, that sunlight was blocked for months. Plants died without sunlight, and the herbivorous dinosaurs died without plants to eat. The carnivores soon died out, too, because their prey was gone.
There is also evidence that the Chixculub impact preceded the dinosaur extinction by hundreds of thousands of years, until another, possibly larger asteroid struck eliminated the non avian dinosaurs once and for all.
Even without the asteroids, dinosaurs were already dealing with the negative affects of climate change.
What else can I help you with?
Did dinosaurs become extinct AD or BC?
B.CAnswer:Although the majority of dinosaurs died out about 70 million years ago, the present day birds are evolved from theropods and are direct descendants of the dinosaurs. In that manner dinosaurs have not become extinct.
When did the dinosaur's become extinct?
Non avian dinosaurs became extinct 65.5 million years ago, at the end of the Cretaceous. However, birds are considered dinosaurs. Because birds still exist, dinosaurs are not completely extinct.
When were dinosaurs believe to have become extinct?
Dinosaurs became extinct along with many other types of ancient organisms in the K-T mass extinction that occurred 65 million years ago which probably coincided with an asteroid impact. This marked the end of the Mesozoic Era and the beginning of the Cenozoic.
When did ammonites become extinct?
Ammonites went extinct at the same time as the dinosaurs, about sixty-five million years ago.
How many dinosaurs become extinct?
All of them. The last dinosaur died some 65 million years ago.
When did dinoasurs become extinct?
By modern reckoning they didn't. Birds, which evolved from small theropods, are now known to be the only surviving dinosaurs. Non-avian dinosaurs became extinct 65.5 million years ago.
How did pteranodon become extinct?
A pteranodon is a pterosaur, or a flying dinosaur. During the fall of the dinosaurs, all dinosaurs became extinct, including the pterosaurs.
Why did dinosaurs become are extinct?
Because theyre basturd
Is it true that no creatures has ever become extinct?
no, some rhinos have become extinct, like the Vietnamese java rhino.........and also dinosaurs have become extinct, by the meteorites
When did large dinosaurs become extinct?
it depends on what type of large dinosaurs you're on about. Sauropods died out in the late jurassic,T-rex died out in the late Cretaceous,65 Million years ago.
When did the basilosaurus become extinct?
The same way as the rest of the dinosaurs.
Did dinosaurs become extinct because of the meteorite?
yes, yes they did
