Cosmic Calendar: Simple animals and arthropods

http://en.wikipedia.org/wiki/File:Arthropoda.jpgOn Carl Sagan’s Cosmic Calendar (illustrated as a comic strip here), which maps the entire history of our cosmos onto a single year, today represents the evolution of simple animals and arthropods (ancestors of insects and arachnids).

2 Comments on “Cosmic Calendar: Simple animals and arthropods

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