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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.
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.
Dicraeosauridae is a family of diplodocoid sauropods who are the sister group to Diplodocidae.Dicraeosaurids are a part of the Flagellicaudata, along with Diplodocidae.. Dicraeosauridae includes genera such as Amargasaurus, Suuwassea, Dicraeosaurus, and Brachytrach
Mass estimates for Amargasaurus have been noted to vary widely depending on the method used, [11] and studies using other methods, not yet applied to Amargatitanis, have found Amargasaurus to weigh 3.304 metric tons (3.642 short tons) [12] to 4.376 metric tons (4.824 short tons). [13]
Eusauropoda (meaning "True Lizard Foot") is a derived clade of sauropod dinosaurs.Eusauropods represent the node-based group that includes all descendant sauropods starting with the basal eusauropods of Shunosaurus, and possibly Barapasaurus, and Amygdalodon, but excluding Vulcanodon and Rhoetosaurus. [1]
The Melanorosauridae were a family of sauropodomorph dinosaurs which lived during the Late Triassic and Early Jurassic.The name Melanorosauridae was first coined by Friedrich von Huene in 1929.
Amargasaurus is a featured article; it (or a previous version of it) has been identified as one of the best articles produced by the Wikipedia community. Even so, if you can update or improve it, please do so. This article appeared on Wikipedia's Main Page as Today's featured article on October 22, 2017.
The total number of neck vertebrae and length of the spines is based on Amargasaurus. Gallina and colleagues further speculated that the spines in both Amargasaurus and Bajadasaurus might have been used for defense. Due to its forward bend, the bifurcated neural spine of the supposed fifth neck vertebra would have reached past the head, and ...