Because of poor dates for land fossils laid down before and after the mass extinction at the end of the Permian, paleontologists assumed that the terrestrial extinctions from Gondwana occurred …read more Source:: Science
Tag: mass extinction
In death of dinosaurs, it was all about the asteroid — not volcanoes
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•Volcanic activity did not play a direct role in the mass extinction event that killed the dinosaurs, according to an international team of researchers. It was all about the asteroid. …read more Source:: Science
Biggest mass extinction caused by global warming leaving ocean animals gasping for breath
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•By combining ocean models, animal metabolism and fossil records, researchers show that the Permian mass extinction in the oceans was caused by global warming that left animals unable to breathe. …read more Source:: Science
Mammals cannot evolve fast enough to escape current extinction crisis
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•The sixth mass extinction is underway, this time caused by humans. A team of researchers have calculated that species are dying out so quickly that nature’s built-in defense mechanism, evolution, …read more Source:: Science
What caused the mass extinction of Earth’s first animals?
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•Fossil records tell us that the first macroscopic animals appeared on Earth about 575 million years ago. Twenty-four million years later, the diversity of animals began to mysteriously decline, leading …read more Source:: Science
Volcanic activity, declining ocean oxygen triggered mass extinction of ancient organisms
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•Global climate change, fueled by skyrocketing levels of atmospheric carbon dioxide, is siphoning oxygen from today’s oceans at an alarming pace — so fast that scientists aren’t entirely sure how …read more Source:: Science