‘An enigma’: scientists finally learn what giant prehistoric shark looked like

Full and part skeletons found in Mexico reveal body shape and anatomy of Ptychodus as well as its likely dietFossil experts say they have gained unprecedented insights into a type of enormous prehistoric shark, after finding complete skeletons of the creatures.The specimens, discovered in small quarries in north-eastern Mexico within the last decade, belong to Ptychodus – a creature that roamed the seas from around 105m to 75m years ago. Continue reading...