Twice as long as the longest snake alive today, Titanoboa was discovered in 2009 by a team of scientists working in one of the world's largest open-pit coal mines at Cerrejón in La Guajira, Colombia. Fossil plants, giant turtles and crocodiles found with it deep underground reveal the earliest known rainforest, teeming with life and dating to the Paleocene, the lost world that followed the demise of the dinosaurs.

"Titanoboa is a bigger, badder boa, and it will simply knock your socks off," said Jennifer Sontchi, Academy director of exhibits.