These were no mean feet. Scientists put their “stamp” on prehistory after discovering a massive dinosaur footprint in Mongolia said to have belonged to one of the largest two-legged animals ever to ...

muscular tails that they use to flex venomous barbs. But myliobatid rays possess very different backsides. “When you pick it up, it’s almost like a giant noodle, but in the water it’s very ...

A powerful tail and winglike pectoral fins shot the 17-foot-long (5-meter-long ... which was lined with giant, fanglike teeth, giving it an expression akin to that of a bulldog.