Dinosaurs were thriving in North America before the mass-extinction asteroid strike, study suggests

New research suggests that dinosaur populations thrived in North America before an asteroid impact 66 million years ago caused a mass extinction. Scientists analyzed fossils from a rock formation in New Mexico, dating them to around 400,000 years before the asteroid impact. This challenges the idea that dinosaurs were in decline. The results were published Thursday in the journal Science. Differences between species found in New Mexico and Montana suggest the existence of diverse dinosaur communities. However, experts caution that data from one location may not represent global trends. Further research is needed to understand the overall situation before the asteroid crash.