An <i>Earth clock</i> showing relationship of duration of the various era/periods of the earth history to one day. The Quaternary, comprising the last 2.6 million years, is just 47 seconds on a clock where 24 hours are related to the total age of the earth of 4.7 Billion years.
<a href="//commons.wikimedia.org/wiki/User:Hgrobe" title="User:Hgrobe">Hannes Grobe</a> 23:05, 21 July 2006 (UTC), Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
CC BY-SA 2.5
<span class="int-own-work" lang="en">Own work</span>