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‘A fresh glimpse at old evidence’: A new look at an old jaw clarifies mammal evolution

New technologies have brought new significance to a set of fossilized jaws that Stephen Gatesy and colleagues found in Greenland 20 years ago. Their new analysis shows that proto-mammals were diversifying earlier than previously thought. (more…)

Before Dinosaurs’ Era, Volcanic Eruptions Triggered Mass Extinction

By Guest PostMarch 25, 2013Scienceend triassic extinction, magmatic activity, mass extinction, milankovich cycles, triassic extinction, volcanic eruptions

Increase in atmospheric carbon dioxide, global warming, ocean acidification killed 76 percent of species on Earth

More than 200 million years ago, a massive extinction decimated 76 percent of marine and terrestrial species, marking the end of the Triassic period and the onset of the Jurassic. (more…)

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‘A fresh glimpse at old evidence’: A new look at an old jaw clarifies mammal evolution

Before Dinosaurs’ Era, Volcanic Eruptions Triggered Mass Extinction