在古代，人们会举办许多与龙有关的习俗活动庆祝龙抬头。
People celebrated the Dragon Head-rising Festival with many customs about the dragon in ancient times.
考古学家同事发现许多大型陆地动物和植物化石，比如一只祖龙的尖牙和一些古代针叶松类型的植物化石。
Archaelogists also discovered a number of larger land-based animals and plant fossils including the sharp tooth of an archosaur and the remains of some ancient conifer-like plants.
那么，中国古代的先民们为什么要创造出龙的形象呢？
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