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Tyrannosaurus (/ t ɪ ˌ r æ n ə ˈ s ɔː r ə s, t aɪ-/) [a] is a genus of large theropod dinosaur.The type species Tyrannosaurus rex (rex meaning 'king' in Latin), often shortened to T. rex or colloquially T-Rex, is one of the best represented theropods.
Megatherium disappeared simultaneously along with the vast majoriy (>80%) of other large South American mammals, as part of the end-Pleistocene extinction event. [56] The use of bioclimatic envelope modeling indicates that the area of suitable habitat for Megatherium had shrunk and become fragmented by the mid-Holocene. While this alone would ...
The specimen went on temporary display on National Fossil Day, 16 October 2013, and was exhibited until the museum's dinosaur hall exhibit closed for renovation in the spring of 2014. The skeleton, named "The Nation's T. rex" [34] became the centerpiece of the dinosaur hall when it reopened in 2019. [35]
Other groups of animals were restricted in size and niches; mammals, for example, rarely exceeded the size of a domestic cat and were generally rodent-sized carnivores of small prey. [19] Dinosaurs have always been recognized as an extremely varied group: over 900 non-avian dinosaur genera have been confidently identified (2018) with 1124 ...
Nasutoceratops is genus of ceratopsid dinosaur that lived in North America during the Late Cretaceous period, about 76.0–75.5 million years ago. The first known specimens were discovered in Utah in the Kaiparowits Formation of the Grand Staircase–Escalante National Monument (GSENM) from 2006 onwards, including a subadult skull with a partial postcranial skeleton and rare skin impressions ...
Arctodus is an extinct genus of short-faced bear that inhabited North America during the Pleistocene (~2.5 Mya until 12,800 years ago). There are two recognized species: the lesser short-faced bear (Arctodus pristinus) and the giant short-faced bear (Arctodus simus).
Hippopotamus is an extant megaherbivore.. Megaherbivores (Greek μέγας megas "large" and Latin herbivora "herbivore" [1]) are large herbivores that can exceed 1,000 kg (2,200 lb) in weight.
The story of Gwangi was originally conceived by Willis O'Brien (1886–1962), the man who created the special effects for the original King Kong (1933). The plot was inspired by Sir Arthur Conan Doyle's book The Lost World (1912), with added elements from King Kong (capturing a creature and bringing it to civilization where it runs amok).