距今1万多年的旧石器时代的人类,被认为是可考历史中确实存在的地球人,而化石证据告诉人们,人类的祖先早出现于300万年前。如果告诉你,在距今5亿多年前的地层里发现人的脚印,你一定不会相信,然而,这又是有据可查的。1978年,隶属于美国哈奎尔兹公司的科学家W.J.曼斯特,在犹他州西部的羚羊镇采集岩石时,当他割开含有三叶虫化石的寒武纪地层时,里面发现了一个脚印,脚印长25厘 Paleolithic humans, more than 10,000 years old, are considered Earth’s probable human existence in history, and fossil evidence tells people that human ancestry first appeared 3 million years ago. If you tell you that you found the human footprints in the strata more than 500 million years ago, you will not believe it. However, this is well documented. In 1978, WJ Manster, a scientist affiliated with the U.S. Hookels and Company, discovered a footprints when he cut rocks in the Antelope Township in western Utah when he cut the Cambrian strata containing trilobite fossils , 25cm long footprint