The Cretaceous period ended about 65 million years ago, a mass extinction due to impact of an asteroid at Chicxulub in Mexico wiped out the dinosaurs, except for the birds.

• 白垩纪期间结束了大约65百万年前,许多绝种由于小行星的冲击在Chicxulub在墨西哥消除了恐,除了鸟。