New York Times: Some 60 million years ago, well after the demise of the dinosaurs, a giant relative of today`s boa constrictors, weighing more than a ton and measuring 42 feet long, hunted crocodiles in rain-washed tropical forests in northern South America, according to a new fossil discovery. The fossil find — a batch of super-sized vertebrae pulled from an open-pit coal mine in northeast Colombia — is remarkable enough just as a paleontological extreme. The species, given the name Titanoboa …