it is believed that the dire wolf exhibited similar social behavior to modern wolves

Hunting scene in the Arctic winter of a Nanuqsaurus hoglundi on Pachyrhinosaurus canadensis in the Late Cretaceous Campanian period about 70 MA

Brachiosaurus altithorax may also have ingested stones to aid in the digestion process

approximately 252 to 248 million years ago

conocidos por sus característicos cuernos y crestas en la cabeza

Spinosaurus Devónico it is believed that theSpinosaurus (S. aegyptiacus "Spinal Lizard") lived in what is now North Africa during the Albian and Cenomanian of the Early Cretaceous period approximately 112 to 93 million years ago. One of the largest predators, with semi aquatic habits and a fundamentally piscivorous diet. Its nostrils were higher up on its snout than the nostrils in other dinosaurs, this would have allowed the animal to breathe even with most of its snout submerged, and its