侏罗纪,一提到一亿三千五百万年至两亿年前这个生物繁荣的地质年代,人们就会想到高大乔木银杏、松柏及低矮植物真蕨、苏铁;想到从无脊椎动物到脊椎动物,从箭石、菊石到巨大的蜥脚类恐龙和鸟脚类恐龙;想到斯皮尔伯格执导的三集连续故事片《侏罗纪公园》。但不知为什么,好像“轰隆”一声,这个年代神话般消失了,今天我们能见得到的只是若干挖掘出来的历史遗迹。其中最为著名的当数四川省自贡市大 Jurassic, referring to the geologically prosperous geological era of 135 to 200 million years ago, tall ginkgo trees, cypresses, and low-lying plants such as ferns and cycads are thought of; To vertebrates, from arrow stones, ammonites to huge sauropods dinosaurs and ornithopod dinosaurs; think of Spielberg directed three episodes of the continuous feature film “Jurassic Park.” But I do not know why, like “Bang ” soon, this era disappeared fabulous, and today we can see only a number of excavated historical sites. One of the most famous when a large number of Zigong City, Sichuan Province