It’s sad when living things go extinct. That means they’re gone forever. I think about extinct unicorns all. the. time. My friend Jodi Rosso told me that a mass extinction is when a huge number of ...

The “Big Five” mass extinctions of the Phanerozoic Eon have long attracted significant attention from the geoscience community and the public. Among them, the Late Ordovician Mass Extinction (LOME) is ...

Exploding stars in near-solar space may have triggered at least two mass extinction events in Earth's history. An analysis of the frequency of supernova explosions in the Milky Way, led by ...

The world and its ecosystems have been around for a long time — so long that the first mass extinction occurred “just shy” of 445 million years ago. “This mass extinction event in the Ordovician, this ...

Paleontologists recognize five big mass extinctions in the fossil record. At the end of the Ordovician period, about 443 million years ago, an estimated 86 percent of all marine species disappeared.

Rapid changes in marine oxygen levels may have played a significant role in driving Earth’s first mass extinction, according to a new study led by Florida State University researchers. About 443 ...

At least two mass extinction events in Earth's history were likely caused by the "devastating" effects of nearby supernova explosions, a new study suggests. Researchers at Keele University say these ...

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 ...

Mass extinction : a general view / Ashraf M.T. Elewa -- Late Ordovician mass extinction / Ashraf M.T. Elewa -- The end Ordovician : an ice age in the middle of a greenhouse / Curtis R. Congreve -- ...

The early Palaeozoic Era records the initial biodiversification of the Phanerozoic. The increase in biodiversity involved drastic changes in taxon longevity, and in rates of origination and extinction ...

Rapid changes in marine oxygen levels may have played a significant role in driving Earth's first mass extinction, according to a new study. Rapid changes in marine oxygen levels may have played a ...