Double Whammy

20 Sep 2012

At www.scientificamerican.com/article.cfm?id=did-the-reign-of-dinosaur-begi... ... the end of Cretaceous, or K/T boundary event, is associated with an asteroid smashing into Yucatan, killing off the dinosaurs, and now the search is on for evidence of a similar strike at the Triassic-Jurassic boundary