After years of uncertainty, a prehistoric shark mystery has at last been solved—thanks to the recent discovery of remarkably complete fossil skeletons in northeastern Mexico. The remains belong to a little-known prehistoric shark genus called Ptychodus,

"Exceptionally preserved" fossils of an ancient shark that lived alongside the dinosaurs has finally revealed what the predator looked like — and why it may have gone extinct.

Six full-body fossils of Ptychodus sharks have been formally analysed for the first time, revealing that they were fast swimmers that preyed on shelled creatures

A groundbreaking revelation has been made thanks to the finding of multiple complete shark fossils from the Late Cretaceous period, which date back to between 105 and 72 million years ago. These fossils have provided new insight into the evolutionary lineage of sharks.