Meteor wipes out dinosaurs

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Meteor wipes out dinosaurs 65 mya

An asteroid or comet struck the Earth at the Cretaceous-Palaeogene boundary possibly leading to the extinction of ~45 % of animal genera including ammonites (http://en.wikipedia.org/wiki/Ammonoidea) and the dinosaurs (http://en.wikipedia.org/wiki/Dinosaur).
Source: http://en.wikipedia.org/wiki/Cretaceous%E2%80%93Paleogene_extinction_event (Wikipedia)

Keywords: evolving_earth, astronomy, geology, evolution, fossils