The decline of dinosaurs was most likely caused by many different factors. A popular theory is that an asteroid crashed into the Yucatán Peninsula 66 million years ago, causing enough terrestrial and asteroid material to be ejected into the atmosphere that sunlight was possibly blocked for several years. This would have severely impacted plant life and subsequently brought about the end of most dinosaurs.
How did most dinosaurs go extinct?
Did dinosaurs have feathers?
Some species of dinosaurs, such as the dromaeosaur, have fossil records of their feathers. Early feathers were not evolved for flight; instead, scientists speculate that dinosaurs evolved feathers for other reasons, such as temperature regulation, camouflage, and balancing while running. While most species are often depicted as featherless, some researchers believe that feathers were commonplace on dinosaurs.
