Ceratopsid

The Ceratopsidae is a family of marginocephalian dinosaurs.All known species in this family were quadrupedal herbivores.Some dinosaurs that are known in this family are: Triceratops, Centrosaurus, Sinoceratops, Styracosaurus, and others.They lived during the Late Cretaceous, mainly in Western North America.These dinosaurs are mainly characterized by their rows of shearing teeth, nasal horns, beaks, and a thin parietal-squamosal shelf that extends back and up into a frill.This family is divided into two subfamilies, which are known as Chasmosaurine and Centrosaurine.The both have different features to tell which dinosaur is in which subfamily.