Little is known about the exact behavior and diet of Prenocephale prenes

Longitud 72 mm

Su cráneo robusto podría haber sido utilizado en enfrentamientos intraespecíficos

Snout-tail length 190mm

Approximate measurements of the Argentinosaurus:

Dunkleosteus terrelli Xiphactinus Little is known about theDunkleosteus terrelli was a species of arthrodire placoderm fish that existed in the late Devonian period, from approximately 380 to 360 million years ago, in the Frasnian and Famennian. Unlike previous estimates, recent research has shown that Dunkleosteus terrelli did not reach the enormous dimensions previously attributed to it. Instead of 10 meters in length, this armored fish is now believed to have been of a more moderate size, reaching