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  JTWs Evolutionary Origins  
Silicified stromatolite boundstone with oolites & sinuous stromatolites from Biwabik Iron-Formation, Paleoproterozoic, ~1.878 GYA

These pages are dedicated to the origin and evolution of physical, chemical, biological, and social structures.
The emphasis is upon structural origins and transformations under the pressures of natural and somatic selection.


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