Earth was stressed before dinosaur extinction
Thursday, December 12, 2019 - 10:40
in Paleontology & Archaeology
New evidence gleaned from Antarctic seashells confirms that Earth was already unstable before the asteroid impact that wiped out the dinosaurs. The study, led by researchers at Northwestern University, is the first to measure the calcium isotope composition of fossilized clam and snail shells, which date back to the Cretaceous-Paleogene mass extinction event. The researchers … Continue reading Earth was stressed before dinosaur extinction