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3000000 B.C. was a year that was described by Emmett Brown as being in the Cretaceous period. In this year, a meteor struck that caused the extinction of the dinosaurs.

Events

Behind the scenes

  • In real life, this year was part of the Piacenzian period. The extinction of all non-avian dinosaurs occurred much earlier, at some point around 65500000 B.C. The Browns also used lemons to power their car battery, although lemons weren't introduced to the Americas until 1493.

Appearances

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