长期以来,科学家普遍认为6500万年前的一颗小行星撞击地球造成了恐龙大灭绝。然而不久前,美国俄勒冈州立大学古生物教授乔治·波尔纳却在新书《谁在咬恐龙?昆虫病菌和白垩纪之死》中提出惊人理论:虽然小行星撞地球给地球带来了巨大的生态灾难,然而,恐 For a long time, scientists generally believe that an asteroid 65 million years ago hit the Earth caused a dinosaur massacre. However, not long ago, George Polna, professor of paleontology at Oregon State University, put forward a surprising theory in his new book, “Who is Biting Dinosaurs? The Pathogen of Insects and the Cretaceous Period.” Although the asteroid struck the earth and brought a huge ecology to the earth Disaster, however, fear