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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.
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 ]
It is estimated to have been 15 metres (49 ft) long and weighed 17.5 tonnes (17.2 long tons; 19.3 short tons), and was seen as the largest land animal known at the time of its discovery. [1] It was the first ceratopsian known to science from more than teeth, though relatively little is known about it.
BSc meteorologist Janice Davila tells Bored Panda that one of the most unknown facts from her field of expertise is that weather radars are slightly tilted upward in a half-degree (1/2°) angle.
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.
The basal skull length is estimated up to 40 centimetres (1.3 ft). [6] The partial proximal parietal is shown to have an inverted "T" shape, as in Protoceratops . [ 5 ] Although the first specimen discovered had single-rooted teeth (unusual for ceratopsians), larger fossils had double-rooted teeth, showing that the teeth became double-rooted ...
It is the largest known Triceratops skeleton, according to the team that assembled the fossil. Big John's 2021 auction price of € 6.6 million ( US$ 7.7 million) made it the most expensive Triceratops skeleton; its high price signaled increasing demand for dinosaur fossils among private collectors and prompted discussion about the drawbacks of ...
Other evidence includes the presence of dinosaur remains in the Hell Creek Formation up to 1.3 m (4.3 ft) above the Cretaceous–Paleogene boundary, representing 40,000 years of elapsed time. This has been used to support the view that the K-Pg extinction was gradual. [ 326 ]