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Anchiceratops was described and named by American paleontologist Barnum Brown, in 1914, as he believed that this dinosaur represented a transitional form closely related to both Monoclonius and Triceratops and intermediate between them, but closest in the development of the skull frill to the latter, hence the generic name meaning "near Ceratops".
Triceratops: Late Cretaceous (Maastrichtian, 68-66 million years ago) Hell Creek formation: Largest known Triceratops skeleton; 60% complete with a skull that is 75% complete. [18] [19] Sold for €6.6 million (US$7.7 million) on 21 October 2021 [19] [20] Bill BDM Badlands Dinosaur Museum: Triceratops: Late Cretaceous (Maastrichtian, 68-66 ...
Ankylosaurus [nb 1] is a genus of armored dinosaur. Its fossils have been found in geological formations dating to the very end of the Cretaceous Period, about 68–66 million years ago, in western North America, making it among the last of the non-avian dinosaurs. It was named by Barnum Brown in 1908; it is monotypic, containing only A ...
The remains of a brow horn suggested that the fossil was a large Triceratops, [3] one of the most common dinosaurs found in the Hell Creek Formation. [4] The remains were scattered over an area of 100 square metres. [5] The fossil's excavation was completed by August 2015. [6] The skeleton is over 60% complete, with a skull that is 75% complete ...
Near Gumbo Butte, Montana, US Failed to meet reserve price [90] Triceratops: Found in North Dakota, US, in 2004 Christie's: April 2008: Paris Failed to meet reserve price, subsequently purchased by an American collector [91] [92] [93] Dryosaurus: Found in Wyoming, US in 1993 I. M. Chait March 2009: New York City Failed to meet reserve price.
North American herbivorous dinosaurs from this time period include the titanosaur sauropod Alamosaurus, the ceratopsians Bravoceratops, Regaliceratops, Triceratops, Leptoceratops, Torosaurus, Nedoceratops, Tatankaceratops (the latter two possible species of Triceratops), and Ojoceratops, the pachycephalosaurs Pachycephalosaurus, Stygimoloch ...
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.
Illustration of specimen YPM 1871E, the horn cores that were erroneously attributed to Bison alticornis, the first named specimen of Triceratops. The first named fossil specimen now attributed to Triceratops is a pair of brow horns attached to a skull roof that were found by George Lyman Cannon near Denver, Colorado, in the spring of 1887. [3]