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