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World's largest snake discovered in fossilized rainforest
Date:2/4/2009

Sixty million years before Jennifer Lopez starred in the film "Anaconda," the world's biggest snake slithered around northern South America. Excavations in Colombia co-organized by Carlos Jaramillo, staff scientist at the Smithsonian Tropical Research Institute in Panama and Jonathan Bloch, curator of vertebrate paleontology at the University of Florida's Florida Museum of Natural History, unearthed fossil remains of a new snake species named Titanoboa cerrejonensis.

Surrounded by huge trucks extracting coal from Cerrejon, one of the world's largest open-pit mines, researchers discovered fossilized bones of super-sized snakes and their prey, crocodiles and turtles, in the Cerrejon Formation, along with fossilized plant material from the oldest known rainforest in the Americas, which flourished at the site 58-60 million years ago.

Jason Head, the lead author of the new species description in the journal Nature, is a research associate at the Smithsonian's National Museum of Natural History and assistant professor of ecology and evolutionary biology at the University of Toronto Mississauga. Head, with David Polly, associate professor of geosciences at Indiana University, used the ratio between vertebral size and the length of existing snakes to estimate that this boa-like snake must have reached 13 meters (42 feet) in length and weighed more than a ton. Titanoboa, as it is now called, is the largest snake ever known, and was the largest non-marine vertebrate from the epoch immediately following the extinction of dinosaurs 65 million years ago. "The discovery of Titanoboa challenges our understanding of past climates and environments, as well as the biological limitations on the evolution of giant snakes." said Head "This shows how much more information about the history of Earth there is to glean from a resource like the reptile fossil record."

Titanoboa's size indicates that it lived in an environment
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Contact: Beth King
kingb@si.edu
703-487-3770 x8216
Smithsonian Tropical Research Institute
Source:Eurekalert

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