Height 70 mm

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

Length 131 mm

This crest was hollow and is believed to have been used to produce sounds and visual displays to attract mates or to communicate with other members of its species

Su cráneo robusto podría haber sido utilizado en enfrentamientos intraespecíficos

Dunkleosteus terrelli Xiphactinus Height 70 mmDunkleosteus 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