Geologic Time

Here is a list of the posts concerning the geologic time scale and geologic periods:

Photo of the Week #2 (February 24, 2011)
A post about a picture of the Burgess Shale fauna. Outlines the formation of the Burgess Shale and why it is such a unique location. Also discusses a few of weird critters that inhabited the ancient Cambrian sea floor.

How old is the Earth?? (February 28, 2011)
A look at how old geologists think the Earth is and the science behind it. This post also looks at how the age of the Earth has changed as new discoveries have been made.

Spotlight on...wait for it...THE PLEISTOCENE (April 20, 2011)
This post discusses everything to to with the Pleistocene. From glaciations to mammoths.

Spotlight on: THE CRETACEOUS (May 6, 2011)
A close look at both flora and fauna during the Cretaceous (wooo dinosaurs). Also, compares the competing hypotheses on why the dinosaurs went extinct.