What percent of earth's history did dinosaurs live?

Answer 1

Dinosaurs were around for (very roughly) 3.68% of the Earth's current time span.

Our best estimates for the origins of dinosaur evolution are approx. 233 Ma (millions of years ago), during the Ladinian in the middle Triassic Period. The estimation of the time of their extinction (known as the Cretaceous-Paleogene extinction event) was about 66 Ma, which brought about the end of the Cretaceous Period.

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Answer 2

Dinosaurs lived for approximately 165 million years, which accounts for about 66% of Earth's history, based on the current estimate that Earth is around 4.5 billion years old.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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