su estructura corporal era más primitiva

El hábitat de Spinosaurus fue principalmente los sistemas fluviales y deltaicos de la región del norte de África en lo que hoy es Marruecos

aunque algunas especies más pequeñas también se han identificado

fibrous plants such as ferns

Due to its large size and powerful jaw

Pachyrhinosaurus Paleozoico superior su estructura corporal era másPachyrhinosaurus 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