Titanoboa-The Titanoboa lived in northeastern Colombia. They could grow up to 12.8 m long and reach a weight of 1,135 kg. Fossils of Titanoboa have been found in the Cerrejón Formation, and date to around 58 to 60 million years ago.The titanaboa killed physically by either constriction or blocking the windpipe and not by the use of venom. Its diet constituted of other reptiles of smaller sizes, birds, and small crocodiles.