Measuring an estimated 15–16 meters in length

showing no trace of elaborate ornamentation

was covered in a row of large

presumably small and elongated as in other derived titanosaurs

Xiphactinus audax skull Stegosaurus Measuring an estimated 15–16 metersXiphactinus audax was a huge predatory fish that lived during the Late Cretaceous, between 112 and 66 million years ago, in the inland seas that covered much of North America. It belonged to the group of ichthyodectiformes, large primitive bony fish that dominated the Cretaceous oceans. This animal could reach lengths of up to six meters and weigh over 400 kilograms, making it one of the largest predatory fish of its time. Its body was elongated and