más cercano en ecología a los odontocetos primitivos que a los misticetos filtradores

suggesting the existence of a rigid structure that could have supported a caudal mace

with large temporal fenestrae and wide orbits

que capturaría en ambientes costeros relativamente productivos

It had a large skull with a powerful jaw and sharp teeth

Triceratops horridus Onchopristis más cercano en ecología aTriceratops horridus was one of the most iconic dinosaurs of the Late Cretaceous , which inhabited what is now North America approximately 68 to 66 million years ago, just before the great extinction that ended the age of the dinosaurs. Its name means "face with three horns," and refers to its most distinctive feature: two large horns above the eyes and a third, shorter one above the nose , accompanied by a wide, bony frill that protected the neck.