Great white, tiger shark, and bull shark. These three are what many consider to be the deadliest shark out there, to humans. However, there is a relatively unknown shark, that might be responsible for far more deaths than the big 3 combined...
If you ask the average person when the dinosaurs rule ended, they would say 66 million years ago when that big ol mean asteroid struck. But in truth, this may not really be all that right...seeing that not so long after their demise a new group of dinosaurs emerged, that caused their own share of terror (pun intended).