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1.9—1.97亿年,1.35—1.8亿年,恐龙在楚雄生存了6000万年,跨三叠纪、侏罗纪(早、中、晚时代)。在楚雄州的楚雄市、禄丰县、武定县、元谋县、牟定县、双柏县等几乎全境,发现了大量的恐龙化石。其中禄丰发掘的恐龙最多、最集中、最有代表性。在楚雄州禄丰县发现的蜥脚类恐龙胚胎化石属“早侏罗纪世”距今1.9—1.97亿年,是世界上迄今发现的最古老的恐龙胚胎化石层。
1.9-197 billion years, 1.35-1.8 billion years. Dinosaurs have lived in Chuxiong for 60 million years, span the Triassic and Jurassic (early, middle and late ages). In Chuxiong Chuxiong City, Lufeng County, Wuding County, Yuanmou County, Mouding County, Shuangbai County, almost all of the territory, found a large number of dinosaur fossils. One of the most dinosaur excavations in Lufeng, the most concentrated, the most representative. The Sauropod dinosaur embryo fossil, found in Lufeng County, Chuxiong Prefecture, was 1.9-197 billion years old and is the oldest dinosaur embryo fossil layer ever discovered in the world.