Crocodiles are sometimes described as living fossils for their close resemblance to their forebears who roamed the Earth during the age of the dinosaurs.
"What's really fascinating about this is a lot of these teeth are unlike anything we see today," Keegan Melstrom, a doctoral student at the University of Utah who conducted the research along with his supervisor Randall Irmis, told AFP. While some of these species probably looked a lot like modern day alligators or crocodiles, others were smaller, lived entirely on land unlike their semiaquatic descendants, and had legs beneath their bodies.What remains a mystery, however, is what evolutionary pressures led to crocodyliforms having plant-dominated diets, and why they disappeared.
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