There's evidence to suggest the ancient creature survived, at least for a little while, with two heads. Image courtesy of Bob Nicholls =================================================================== In 2006, a study published in the journal Biology Letters described a fossil unlike any ever seen before. It captured a prehistoric reptile that lived around 125 million years ago. That, in itself, wasn’t terribly surprising, but the fact that it had two heads really, really was. Bicephalism describes a quirk in animal development that results in an individual with two heads. We’ve seen remarkable examples of it in wild animals, such as this southern black racer...