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Amargasaurus (/ ə ˌ m ɑːr ɡ ə ˈ s ɔː r ə s /; "La Amarga lizard") is a genus of sauropod dinosaur from the Early Cretaceous epoch (129.4–122.46 mya) of what is now Argentina.The only known skeleton was discovered in 1984 and is virtually complete, including a fragmentary skull, making Amargasaurus one of the best-known sauropods of its epoch.
The group likely first diverged from the diplodocids in the middle Jurassic in North America and subsequently dispersed into Gondwana, with the most diversity in East Africa and South America. [6] Amargasaurus was the latest surviving dicraeosaurid genus, living into the Early Cretaceous period. [6]
Its small stature was probably the result of insular dwarfism occurring in a population of sauropods isolated on an island of the late Jurassic in what is now the Langenberg area of northern Germany. [ 33 ] [ 34 ] The diplodocoid sauropod Brachytrachelopan was the shortest member of its group because of its unusually short neck.
Jurassic Park, later also referred to as Jurassic World, [1] is an American science fiction media franchise created by Michael Crichton and centered on a disastrous ...
Earlier drafts for Jurassic Park III and Jurassic Park IV (later Jurassic World) had featured the aquatic reptile Kronosaurus. [43] [217] [218] [219] The Mosasaurus was suggested by Trevorrow, as part of a theme-park feeding show in which guests watch from bleachers as the animal leaps out of a lagoon and catches its prey: a shark hanging above ...
Mounted skeletons of Tyrannosaurus (left) and Apatosaurus (right) at the AMNH. Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago, although the exact origin and timing of the evolution of dinosaurs is the subject of active research.
Sauroposeidon (/ ˌ s ɔːr oʊ p oʊ ˈ s aɪ d ən / SOR-o-po-SY-dən; meaning "lizard earthquake god", after the Greek god Poseidon [3] [4]) is a genus of sauropod dinosaur known from several incomplete specimens including a bone bed and fossilized trackways that have been found in the U.S. states of Oklahoma, Wyoming, and Texas.
Diplodocoidea is a superfamily of sauropod dinosaurs, which included some of the longest animals of all time, including slender giants like Supersaurus, Diplodocus, Apatosaurus, and Amphicoelias.