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The dinosaurs first appeared on this earth around 230 million years ago and showed their existence for complete 160 million years.The dinosaurs existed in Triassic, Jurassic and Cretaceous period. The end of Triassic period witnessed mass extinction; about 95% species disappeared from this earth and with this went the early dinosaurs.
The Jurassic period lasted for 30 million years where reptiles were the dominant figures and so this age is known as The age Of Dinosaurs.
There are many theories as to how the dinosaurs became extinct but there is no absolute proven theory. Lets take a look at some.
Large asteroid or comet collided with Earth about 65 million years ago. Scientists think that such a large collision would throw so much dust into the air that sunlight would not be able to shine and plants and animals would die.
A huge increase in volcanic activity at around 65 millions years ago could have pumped so much ash into the air that it blocked out the sun killing the dinosaurs.
Some scientists believe that there was a severe ice age. The last one ended about 10,000 years ago. A very severe ice age could have changed temperatures and frozen a lot of Earth's water. The dinosaurs would not be able live under such conditions and that is how the dinosaurs became extinct.
It has also been suggested that desease killed off the dinosaurs. A very deadly and contagious desease may have circulated among the dinosaurs forcing them to become extinct.
Another theory is that the Earth just gradually changed in climate over a long time period and the dinosaurs were not able to adapt to the cooler, dryer climate.
There is now widespread evidence that a meteorite impact was at least the partial cause for this extinction. Impact craters are visible on most planets in our solar system.
Wiki User
∙ 15y ago
Wiki User
∙ 11y agoWe believe that dinosaurs died out because of A.Meteorites,B.Volcanic Eruptions,C.An extremely upscaled natural disaster,D.Disease,E.They saw the meteor and had a huge party and all died of kidney diseases XD,F.Flamingos,G.All evolved to birds,H.Ice Age.
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Are there any gigantic dinosaurs living today?
No, the dinosaurs are now all extinct, though some people believe that birds are evolved from dinosaurs and are their direct descendants.
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
Where Paleolithic people alive when dinosaurs where around?
No. Dinosaurs were extinct by the time humans evolved.
Why are people saving mammoths?
They are not - mammoths were dinosaurs and are extinct
What was after dinosaurs?
Believe it or not People.
Why don't people believe in myths when they will believe in dinosaurs?
There is no proof of myths but there is proof of dinosaurs.
Why do dinosaurs eat chocolate?
First of all, dinosaurs are extinct. Approximatively 65 million years ago, the dinosaurs became extinct by what most people believe was a large meteorite which hit Earth and caused an Ice Age. Ash and dust covered the sun causing the Ice Age. Secondly, dinosaurs did not eat chocolate (chocolate was not in that time period) They ate other dinosaurs and plants depending on if they were carnivorous or herbivorous.
Why do people think that dinosaurs are extinct?
People don't think dinosaurs are extinct. People know they are. At least the ones you are referring to. Perhaps you would like to be more specific. Birds could be an evolution of a dinosaur as i think though.
Do people really believe there is no such thing as dinosaurs?
No many people believe that dinosaurs were real. And so they should dinosaurs have left fossils of their bones this proves their existence.
What should people do to protect dinosaurs?
Umm sorry to break the news to you but dinosaurs went extinct along time ago
Will dinosaurs come back?
Some people believe that dinosaurs will come back in their life time. Some people believe that they will come back after there life time. Some people believe they will be cloned. Some people believe, that they will never come back. What ever you believe, you can believe. But I believe that dinosaurs will not come back ever, but will be cloned outside of my lifetime. - Christopher250 -
What are the main reasons that Lincoln was voted into office?
Well, when the dinosaurs stole his top hat, he justified America by spearing the dinosaur, not realizing its the last one. He made dinosaurs become extinct which helped people not die. That is the reason he became president. the reason he was killed is because john Wilkes booth loved dinosaurs.
