The common name for the extinction event that killed the dinosaurs is the Cretaceous-Paleogene (K-Pg) extinction event. This mass extinction occurred around 66 million years ago and is widely attributed to a combination of catastrophic phenomena, notably the impact of a large asteroid and significant volcanic activity. This event led to the extinction of approximately 75% of Earth's species, including most dinosaurs, drastically reshaping life on the planet. Understanding this extinction event provides crucial insights into the processes driving biodiversity and the long-term effects of mass extinctions on ecosystems.