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Study suggests Earth’s first mass extinction may have been overlooked
A wave of new research is forcing paleontologists to reconsider a basic question about life on Earth: when did the first mass ...
A quarter of a billion years ago, long before dinosaurs or mammals evolved, the predator Dinogorgon, whose skull is shown here, hunted floodplains in the heart of today's South Africa. In less than a ...
Many of their descendants—modern birds—are currently threatened by extinction, with hundreds of species at risk due to human activity. This article explores the major extinction events that influenced ...
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