A massive ice age wiped out ocean life 445 million years ago, reshaping ecosystems and setting the stage for jawed fish ...
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Mass extinction helped jawed vertebrates rise, study finds
About 445 million years ago, Earth’s oceans turned into a danger zone. Glaciers spread across the supercontinent Gondwana, ...
About 445 million years ago, Earth nearly wiped out life in the oceans. Glaciers spread across the supercontinent Gondwana, ...
Mass extinctions, volcanism, and impacts: The geological extinction record : history, data, biases, and testing / Norman MacLeod -- Large igneous provinces and mass extinctions : an update / David P.G ...
Paleontologists recognize five big mass extinctions in the fossil record, marked by the loss of a significant number of species in a (geologically speaking) short span of time. Theories to explain ...
Violent supernovas may have caused two of Earth’s largest mass extinctions that have never been completely explained, according to a theory put forward in new research.During the final stages of a ...
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A slowdown, not salvation: what new extinction data reveal about the state of life on Earth
[(https://imgs.mongabay.com/wp-content/uploads/sites/20/2025/05/02210545/founders-briefs-540x90-1.jpg) For decades, biologists have warned that humanity is ...
Sharks might be the all time bullet-dodging champions. They’ve been around for about 450 million years, longer than trees, longer than the rings of Saturn, and longer than most of the other life on ...
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