Birds and mammals in the geological developme | vedclass

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(C) In the geological history of the Earth,the $Jurassic$ period is often associated with the dominance of dinosaurs. During this time,the first birds

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Jurassic

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(C) In the geological history of the Earth,the $Jurassic$ period is often associated with the dominance of dinosaurs. During this time,the first birds (such as $Archaeopteryx$) evolved from small theropod dinosaurs. Mammals also originated during the $Triassic$ period but underwent significant diversification and radiation during the $Jurassic$ and subsequent periods. Among the given options,the $Jurassic$ period is the most appropriate timeframe for the early emergence and diversification of these groups.

Birds and mammals in the geological development of the Earth arose in which period?

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