The skull of Titanis walleri was large and robust

Approximate measurements of the Ambulocetus:

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their body size decreased over time as the Carboniferous progressed and reached the Permian

Gorgosaurus libratus / Styracosaurus albertensis Scale:1:35 The skull of Titanis walleriIn the rugged landscape of the Upper Cretaceous, a Gorgosaurus libratus, an imposing predator of large proportions, comes face to face with a challenging Styracosaurus albertensis. Both animals face each other in a fierce fight for survival. The Gorgosaurus, with its powerful skull and sharp teeth, attempts to close the gap quickly, while the Styracosaurus, with its distinctive collar of spines and nasal horn, adopts a defensive stance. The scene