Paleobiology
Site news
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The Stanford Doerr School of Sustainability and Stanford University Libraries are collaborating to reorganize, rehouse, and revitalize the Geoscience Specimen Collection, which contains an estimated half a million specimens, including rocks, minerals, fossils, cores, soil, water, and other physical materials.
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Through experiments comparing living representatives of animal groups that dominated Paleozoic oceans with those that thrive today, Stanford scientists have directly linked the disappearance of once-dominant marine groups to intolerable heat and diminished oxygen in ancient oceans.
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Scientists have long known that biodiversity has increased over geological time, but corresponding trends for the sheer abundance of living things have never been calculated, until now. The findings add to data suggesting that conserving biodiversity is essential for the health of humans and our planet.
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A fossil study from Stanford University finds the diversity of life in the world’s oceans declined time and again over the past 145 million years during periods of extreme warming. Temperatures that make it hard for cold-blooded sea creatures to breathe have likely been among the biggest drivers for shifts in the distribution of marine biodiversity.
