- Understanding the geologic time scale and how to organize Earth’s history into a coherent timeline. MS-LS4-1: Analyze and interpret data for patterns in the fossil record that document the existence ...

A geologic time scale 2004 / edited by Felix M. Gradstein, James G. Ogg, and Alan G. Smith Smithsonian Libraries and Archives. Object Details Author Gradstein, F. M Ogg, James G (James George) ...

The geologic time scale divides Earth’s 4.6 billion-year story into grandly named chapters. Like nesting dolls, the chapters contain sub-chapters, which themselves contain sub-sub-chapters.

I constantly worry I’m forgetting a deadline, that I’ll be late, that my life is slipping through my fingers. Thinking about geologic time gives me perspective. By Yohanca Delgado I wandered ...