Period
A unit of geologic time that lasts tens of millions of years, it is longer than an epoch but shorter than an era
Real World Example
Imagine trying to organize your family photo albums, where each album represents a different stage of your life, like childhood, teenage years, and adulthood. Each album is like a geologic period: it encompasses a significant amount of time and contains many individual events (or photos), but it is part of a larger collection of albums that represent your entire life (similar to an era). Just as a family photo album captures a specific, substantial phase of your life with many memorable events (analogous to epochs), a geologic period captures a broad and significant span of Earth's history, organizing it between the finer details of epochs and the grand scope of eras.
Practice Version
