Cretoxyrhina
Cretoxyrhina is an extinct genus of large mackerel shark that lived about 107 to 73 million years ago during the late Albian to late Campanian of the Late Cretaceous period. The type species, C. mantelli, is more commonly referred to as the Ginsu shark. Measuring up to 8 meters in length and weighing over 4,944 kilograms, it was one of...