This episode is about the history of the earth, and how we compile all that we know about the ancient past in the great Geologic Time Scale.   
In the news: the shapes of bird eggs, very ancient amphibians, more dinosaur faces, and the history of hippos.
Time markers:
Intro & Announcements: 00:00:00
News: 00:03:00
Main discussion: 00:32:00
Patron announcements & question: 01:32:00
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http://commondescentpodcast.wordpress.com/
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The Podcast music is “On the Origin of Species” by Protodome.
More music like this at http://ocremix.org.

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