Exceptional Fossils Spill The Secrets Of “Enigmatic” 10-Meter Sharks Found In Mexico
Exquisitely preserved fossils belong to an extinct radical of giant shark have been identify in Mexico , and may help oneself solve some one C - old whodunit surrounding what these enigmas looked like , what they hunt , and how they tally into the shark evolutionary tree . Ptychodusis a genus of extinctsharksfrom the Albian – Campanian leg of the Cretaceous period ( around 105 to 75 million age ago ) ....