The authors also found evidence of w-shaped flood channels using seismic data and developed computer models to simulate how ...

We will provide a list of web sites with relevant information. The geologic time scale is divided into eons, eras, periods, epochs, and ages. Our activities, and the time scale for download above, ...

The scale functions as a massive calendar, dividing the history of life into eras, periods, and epochs based on fossil evidence. In this feature, explore the history of life on Earth as we know it ...

The Cretaceous is split into two smaller time periods called epochs. The Early Cretaceous Epoch lasted from 145 million years ago to 100.5 million years ago and the Late Cretaceous Epoch lasted from ...