Pachyrhinosaurus Ammonites and contributed to the development

and contributed to the development of biodiversity that would eventually give rise to mammals

'Terrible Claw') is a genus of theropod dinosaur that lived in what is now North America during the Early Cretaceous through the Aptian and Albian periods

The Deinosuchus

Baryonyx (Baryonyx walkeri) was a theropod dinosaur that lived during the Cretaceous period

Pachyrhinosaurus Ammonites and contributed to the developmentPachyrhinosaurus is an extinct genus of ceratopsian dinosaur that lived during the late Cretaceous period, approximately 72 to 67 million years ago. Its name means "thick nosed lizard", which refers to the distinctive feature of this species. Pachyrhinosaurus was characterized by having a large, robust skull with a thick nose and enlarged nasal organs, which formed bony structures called "antlers" at the front of the skull. These antlers varied in