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The clade Ceratopsidae was in 1998 defined by Paul Sereno as the group including the last common ancestor of Pachyrhinosaurus and Triceratops; and all its descendants. [17] In 2004, it was by Peter Dodson defined to include Triceratops, Centrosaurus, and all descendants of their most recent common ancestor. [18]
Triceratops were herbivorous and, because of their low slung head, their primary food was probably low growing vegetation, although they may have been able to knock down taller plants with their horns, beak, and sheer bulk. [30] [58] The jaws were tipped with a deep, narrow beak, believed to have been better at grasping and plucking than biting ...
A chasmosaurine ceratopsid that may be a specimen of Triceratops. †Ojoceratops †Ojoceratops fowleri; 68 Ma Ojo Alamo Formation, New Mexico, USA A chasmosaurine ceratopsid, possibly synonymous with Triceratops or Eotriceratops. †Pachyrhinosaurus †Pachyrhinosaurus canadensis †Pachyrhinosaurus lakustai †Pachyrhinosaurus perotorum
Size comparison. Sinoceratops was a large ceratopsian, with an estimated length of 5 metres (16 ft) and body mass of 2 tonnes (2.0 long tons; 2.2 short tons). [5] It has a short, hooked horn on its nose (called a nasal horn), no horns above its eyes (brow horns), and a short neck frill with a series of forward-curving hornlets that gave the frill a crown-like appearance.
Pentaceratops ("five-horned face") is a genus of herbivorous ceratopsid dinosaur from the late Cretaceous Period of what is now North America.Fossils of this animal were first discovered in 1921, but the genus was named in 1923 when its type species, Pentaceratops sternbergii, was described.
Ceratopsia or Ceratopia (/ ˌ s ɛr ə ˈ t ɒ p s i ə / or / ˌ s ɛr ə ˈ t oʊ p i ə /; Greek: "horned faces") is a group of herbivorous, beaked dinosaurs that thrived in what are now North America, Asia and Europe, during the Cretaceous Period, although ancestral forms lived earlier, in the Late Jurassic of Asia.
Raymond the Triceratops: Red Phantom Triceratops: Late Cretaceous (Maastrichtian, 68-66 million years ago) Roar [39] Naturhistorisk museum: Triceratops Name comes from donor of specimen. Ruben's Triceratops UCMP 113697 [13] University of California Museum of Paleontology: Triceratops: Late Cretaceous (Maastrichtian, 68-66 million years ago)
In a cladistic analysis, it was recovered as a close relative of Triceratops, Nedoceratops and Torosaurus. It would have been the sister species of Triceratops. In view of its greater age, the describing authors considered it more likely that Eotriceratops was in fact basal to, lower in the evolutionary tree than, the other three genera. [1]