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Triceratops (/ t r aɪ ˈ s ɛr ə t ɒ p s / try-SERR-ə-tops; [1] lit. ' three-horned face ') is a genus of chasmosaurine ceratopsian dinosaur that lived during the late Maastrichtian age of the Late Cretaceous period, about 68 to 66 million years ago in what is now western North America.
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.
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 prorsus: YPM 1822 [13] Yale Peabody Museum: Maastrichtian: Laramie Formation, Wyoming [13] Complete skull [13] The only other species of Triceratops, besides T. horridus that is universally considered to be valid [206] [215] The holotype of T. prorsus (top) compared to a specimen nicknamed "Yoshi's Trike" Triceratops serratus: YPM ...
Mrs. P. and the kids meet Tank Triceratops and his mom on the train for a play date at the Big Pond, and they learn why Triceratops have a frill. 8: 8 "One Big Dinosaur"
Named partly for the Norse god of mischief, Lokiceratops rangiformis was a cousin of Triceratops and lived in a swampy environment alongside other horned dinosaur species about 78 million years ago.
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.
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