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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.

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13y ago
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14y ago

65 million years ago. Did they quit teaching this in school?

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Q: When were dinosaurs believe to have become extinct?
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Related questions

Did dinosaurs become extinct with fire?

No, many scientists believe that it was a meteor that demolished the diosaurs and some are still having debates.


What do they think the loch ness monster is?

People believe that it is a plesiosaur (not right spelling) from the age of the dinosaurs which hasn't become extinct


Did dinosaurs become extinct AD or BC?

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Because theyre basturd


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no, some rhinos have become extinct, like the Vietnamese java rhino.........and also dinosaurs have become extinct, by the meteorites


Is the extincion of dinos are real?

The scientists believe that dinosaurs were extinct.


Has an animal ever become extinct from a natural distaster?

The Dinosaurs.


Did dinosaurs become extinct because of the meteorite?

yes, yes they did


What is no longer here and is a species that has died out and has become extinct?

DINOSAURS.


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The same way as the rest of the dinosaurs.