Great White Shark Teeth Reveal Ancient Secrets of Their Evolution - American Oceans

Asteroid that wiped out the dinosaurs 66 million years ago left sharks unscathed

The ancient ones - The Australian Museum

150-million-year-old fossil illuminates shark evolution

Great white shark - Wikipedia

Sharks Exhibition American Museum of Natural History

Mass Shark Extinction Triggered by Dinosaur-Killing Asteroid

The Secret History of Sharks: The Rise of the Ocean's Most Fearsome Predators: Long, John: 9780593598078: : Books

Ancient megalodon could devour whale in five bites

Shark - Wikipedia

Marine Science News Full Text - Marine Science Australia

The Megalodon Was Bigger, Faster and Even Hungrier - The New York Times

A prehistoric shark as big as today's great white identified from fossils

Sharks of the Past: Unlocking Toalean Secrets in Sulawesi's Deep History, by Sandee Oster

The Shocking Truth About The Shark Tooth Beaches In Florida - Tourism Teacher

Megalodon Was No Cold-Blooded Killer – And That Spelled Its Doom