Chapter 4: The Key to Earth's Timeline One of the most significant contributions of fossils is to Earth's geologic timescale.

第四章：地球时间轴的关键 化石最重要的贡献之一是对地球地质时间轴的影响。

In fact, the geologists known as stratigraphers who determine the geologic timescale, have proposed a start date for the Anthropocene around 1950.

事实上，确定地质时间尺度的地层学家地质学家已经提出了 1950 年左右人类世的开始日期。