Simple organisms such as bacteria and alga have been found fossil in rocks more than 3000 m. y. old . 简单的生物,如细菌和藻类,它们的化石已在三十多亿年的岩石中发现。
Lesson 1 finding fossil man 发现化石人
This realization provided a big incentive for paleontologists to get out in the field and find fossils older than the cambrian 这项体认刺激了古生物学家走入田野,寻找比寒武纪更古老的化石。
Amazingly , in 1998 two different groups of paleobiologists reported finding fossils with remarkable soft - tissue preservation in another precambrian lagerst ? tte ? the doushantuo formation in guizhou province of south china 令人惊讶的是,在1998年,有两个不同的古生物学团队发现了另一个前寒武纪宝库,那是在中国贵州省的陡山沱组地层。