Tag #Fossil Records

Were dinosaurs already declining before the asteroid impact, or did the impact cause their extinction?

A new study published in Current Biology suggests that dinosaurs were thriving before the asteroid impact 66 million years ago, contrary to previous beliefs. Researchers analyzed the North American fossil record for 18 million years before the extinction event, using statistical modeling to account for biases in fossil discovery. The results indicate that dinosaur populations remained stable, challenging the hypothesis of a pre-existing decline.