The fourth mass extinction occurred about 200 mya at the end of the ________ period.This extinction eliminated 35 percent of the existing animal species,including ________.

Question

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The fourth mass extinction occurred at the end of the Triassic period and eliminated 35 percent of existing animal species, including reptiles, early dinosaurs, and the first mammals. This extinction was likely caused by a combination of climate change and geological events, such as volcanic activity and sea level changes.

The Fourth Mass Extinction Occurred About 200 Mya at the End