Megalodons likely gave birth to large newborns about 13 feet long, roughly the size of today’s adult shark. Representational image: Megalodon, a giant prehistoric shark, ruled the oceans millions of years ago. iStock Megalodon, a giant prehistoric shark, ruled the oceans millions of years ago. The conventional view of megalodon as simply a larger version of the great white is now being challenged as new research has uncovered a more complex reality. Led by Professor Kenshu Shimada of DePaul University, a team of 28 experts from around the world analyzed a nearly complete vertebral column of a megalodon found in...