approximately 125 to 100 million years ago

in what is now the western United States and Canada

Las mandíbulas presentaban una curvatura hacia arriba

muscular neck

Triceratops diorama Hell Creek Nyctosaurus approximately 125 to 100 millionThe diorama depicts a vibrant scene from the Hell Creek Formation, approximately 66 million years ago, where a Triceratops dominates the landscape with its imposing size. Its scaly skin displays a camouflage pattern between brown and greenish tones, and its enormous skull with three horns and a large bony frill casts a shadow on the ground. Its robust legs sink slightly into the wet mud as it strides steadily near the water. Nearby, a