Oxytropidoceras Posted September 7, 2014 Share Posted September 7, 2014 Happy Birthday Plate-Tectonics ! by David Bressan Scientific American, September 7, 2014 http://blogs.scientificamerican.com/history-of-geology/2014/09/07/happy-birthday-plate-tectonics/ Yours Paul H. Link to comment Share on other sites More sharing options...
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