CarwilBJ’s avatarCarwilBJ’s Twitter Archive—№ 11,470

  1. Evidence that Earth’s first #MassExtinction (540 mya) was caused by animals, not catastrophe news.vanderbilt.edu/2015/09/evidence-that-earths-first-mass-extinction-was-caused-by-critters-not-catastrophe/?utm_source=research_email&utm_medium=research_email&utm_campaign=research_email_2015-09-06
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