But if you're hoping for a prehistoric clash of the titans, you're out of luck: The 7-foot-long (2.1-meter-long) crocodile relative—called Cerrejonisuchus improcerus—wouldn't have stood a fighting chance against the 45-foot-long (13.7-meter-long) Titanoboa cerrejonesis, researchers say. (See pictures of Titanoboa, the biggest snake in history.)

There would have been "no competition whatsoever," said study leader Alex Hastings, a University of Florida graduate student in vertebrate paleontology who works with the school's the Florida Museum of Natural History.

"Even the smallest Titanoboa ... would have no problem downing even the largest of the new crocodilyforms we found." Crocodilyforms are reptiles that belong to the order Crocodilia, which includes,