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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 anterior dorsal vertebrae show an autapomorphic ridge on the anterior centrodiapophyseal lamina. [1] Even the posterior dorsal vertebrae had forked neural spines, as in its close relative Amargasaurus, and unlike other dicraeosaurids in which forking of the neural spines only extended into the middle dorsal vertebrae. [4]
Amargasaurus probably fed at mid-height, as shown by the orientation of its inner ear and the articulation of its neck vertebrae, which suggest a habitual position of the snout some 80 centimeters (31 inches) above the ground and a maximum height of 2.7 meters (8.9 feet). Within the Sauropoda, Amargasaurus was a member of the family ...
Had elongated spines on its cervical vertebrae, although they were not as tall as those of Amargasaurus and Bajadasaurus [52] Pitekunsaurus: 2008 Anacleto Formation (Late Cretaceous, Campanian) Argentina: Known from several bones from different parts of the body, including a braincase Powellvenator: 2017 Los Colorados Formation (Late Triassic ...
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
A pair of anterior dorsal vertebrae from a dicraeosaurid that were also found in the La Amarga Formation, MOZ-Pv 6126-1 and MOZ-Pv 6126-2, could be additional remains of Amargatitanis, or belong to the other La Amarga Formation dicraeosaurid, Amargasaurus. [3]
Amargasaurus [2] A. cazaui [2] Neuquén [2] Puesto Antigual "Braincase and associated postcranial skeleton." [3] Amargatitanis. A. macni. Neuquén Puesto Antigual "Two caudal vertebrae, an incomplete right ischium, a right femur, an incomplete right tibia, an incomplete right fibula, a right astragalus, and an incomplete right metatarsal I ...
According to Kent Stevens, computer-modeled reconstructions of the skeletons made from the vertebrae indicate that sauropod necks were capable of sweeping out large feeding areas without needing to move their bodies, but were unable to be retracted to a position much above the shoulders for exploring the area or reaching higher.