North Dakota killing field offers snapshot of Earth’s last mass extinction

For more than half a decade at a North Dakota site called Tanis in the Hell Creek Formation, paleontologist Robert DePalma has worked to une...

For more than half a decade at a North Dakota site called Tanis in the Hell Creek Formation, paleontologist Robert DePalma has worked to unearth evidence of what is believed to be a ‘killing field’ established shortly after the impact of the asteroid that ushered in Earth’s last mass extinction event. The site is home to the fossilized remains of … Continue reading

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