04/04/2009 05:12 am ET Updated May 25, 2011

Paleontologists Discover Mammoth Snake Species In Colombia

Last month, an international group of scientists revealed in the journal Nature that Jaramillo's team had made a startling discovery -- a species of snake larger than a school bus that ruled northern South America 60 million years ago. Evolving after the extinction of the dinosaurs, Titanoboa cerrejonensis -- or titanic boa from Cerrejon -- might have been the largest vertebrate living on land at that time, the Paleocene era.

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